Merge branch 'issue-15068' into 'issue-15066'

Draft: new array #15068

See merge request sutty/sutty!263

Gemfile

@@ -79,6 +79,7 @@ gem 'webpacker'
 gem 'yaml_db', git: 'https://0xacab.org/sutty/yaml_db.git'
 gem 'kaminari'
 gem 'device_detector'
+gem 'htmlbeautifier'
 gem 'dry-schema'
 gem 'rubanok'
 

Gemfile.lock

@@ -269,6 +269,7 @@ GEM
     hiredis (0.6.3-x86_64-linux-musl)
     hiredis-client (0.14.1-x86_64-linux-musl)
       redis-client (= 0.14.1)
+    htmlbeautifier (1.4.2)
     http_parser.rb (0.8.0-x86_64-linux-musl)
     httparty (0.21.0)
       mini_mime (>= 1.0.0)
@@ -659,6 +660,7 @@ DEPENDENCIES
   hamlit-rails
   hiredis
   hiredis-client
+  htmlbeautifier
   httparty
   icalendar
   image_processing

app/assets/stylesheets/application.scss

@@ -11,6 +11,21 @@ $colors: (
   "magenta": $magenta
 );
 
+// TODO: Encontrar la forma de generar esto desde los locales de Rails
+$custom-file-text: (
+  en: "Browse",
+  es: "Buscar archivo",
+  pt: "Buscar ficheiro",
+  pt-BR: "Buscar arquivo"
+);
+
+$custom-file-text-replace: (
+  en: "Replace file",
+  es: "Reemplazar archivo",
+  pt: "substituir ficheiro",
+  pt-BR: "substituir arquivo"
+);
+
 // Redefinir variables de Bootstrap
 $primary: $magenta;
 $secondary: $black;
@@ -20,6 +35,17 @@ $form-feedback-valid-color: $black;
 $form-feedback-invalid-color: $magenta;
 $form-feedback-icon-valid-color: $black;
 $component-active-bg: $magenta;
+$zindex-modal-backdrop: 0;
+$modal-content-bg: var(--background);
+$modal-content-border-color: var(--modal-content-border-color);
+$card-bg: var(--background);
+$card-border-color: var(--card-border-color);
+$input-bg: var(--background);
+$input-color: var(--foreground);
+$btn-bg-color: var(--btn-bg-color);
+$btn-color: var(--btn-color);
+$input-group-addon-bg: var(--btn-bg-color);
+$custom-file-color: var(--btn-color);
 
 $spacers: (
   2-plus: 0.75rem
@@ -32,6 +58,16 @@ $sizes: (
 @import "bootstrap";
 @import "editor";
 
+.custom-file-input {
+  &.replace-image {
+    @each $lang, $value in $custom-file-text-replace {
+      &:lang(#{$lang}) ~ .custom-file-label::after {
+        content: $value;
+      }
+    }
+  }
+}
+
 @each $color, $rgb in $theme-colors {
   .#{$color} {
     color: var(--#{$color});
@@ -60,6 +96,8 @@ $sizes: (
   --foreground: #{$black};
   --background: #{$white};
   --color: #{$magenta};
+  --card-border-color: #{rgba($black, .125)};
+  --modal-content-border-color: rgba(#{$black}, .2);
 }
 
 @media (prefers-color-scheme: dark) {
@@ -67,6 +105,8 @@ $sizes: (
     --foreground: #{$white};
     --background: #{$black};
     --color: #{$cyan};
+    --card-border-color: #{rgba($white, .125)};
+    --modal-content-border-color: #{rgba($white, .2)};
   }
 
   .btn-secondary {
@@ -87,13 +127,17 @@ $sizes: (
       box-shadow: 0 0 0 0.2rem $cyan;
     }
   }
-}
 
-// TODO: Encontrar la forma de generar esto desde los locales de Rails
-$custom-file-text: (
-  en: 'Browse',
-  es: 'Buscar archivo'
-);
+  @include form-validation-state("valid", $cyan, url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'><path fill='#{$white}' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/></svg>"));
+
+  .custom-checkbox {
+    .custom-control-input:checked ~ .custom-control-label {
+      &::after {
+        background-image: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'><path fill='#{$black}' d='M6.564.75l-3.59 3.612-1.538-1.55L0 4.26l2.974 2.99L8 2.193z'/></svg>");
+      }
+    }
+  }
+}
 
 @font-face {
   font-family: 'Saira';
@@ -318,10 +362,6 @@ svg {
   }
 }
 
-.custom-control-label {
-  font-weight: bold;
-}
-
 .designs {
   .design {
     margin-top: 1rem;
@@ -621,3 +661,33 @@ $bezier: cubic-bezier(0.75, 0, 0.25, 1);
 		}
 	}
 }
+
+// https://getbootstrap.com/docs/5.1/components/placeholders/
+.placeholder {
+  display: inline-block;
+  min-height: $spacer;
+  cursor: wait;
+  vertical-align: middle;
+  opacity: .5;
+  background-color: $grey;
+  animation: placeholder-glow 2s ease-in-out infinite;
+}
+
+.placeholder-glow {
+  .placeholder {
+    -webkit-animation: placeholder-glow 2s ease-in-out infinite;
+    animation: placeholder-glow 2s ease-in-out infinite;
+  }
+
+  @-webkit-keyframes placeholder-glow {
+    50% {
+      opacity: .2;
+    }
+  }
+
+  @keyframes placeholder-glow {
+    50% {
+      opacity: .2;
+    }
+  }
+}

app/assets/stylesheets/dark.scss

@@ -6,6 +6,7 @@ $cyan: #13fefe;
   --foreground: #{$white};
   --background: #{$black};
   --color: #{$cyan};
+  --card-border-color: #{rgba($white, .125)};
 }
 
 .btn {

app/controllers/application_controller.rb

@@ -2,7 +2,7 @@
 
 # Forma de ingreso a Sutty
 class ApplicationController < ActionController::Base
-  include ExceptionHandler
+  include ExceptionHandler if Rails.env.production?
   include Pundit::Authorization
 
   protect_from_forgery with: :null_session, prepend: true
@@ -117,4 +117,9 @@ class ApplicationController < ActionController::Base
 
     session[:usuarie_return_to] = request.fullpath
   end
+
+  # Detecta si una petición fue hecha por HTMX
+  def htmx?
+    request.headers.key? 'HX-Request'
+  end
 end

app/controllers/collaborations_controller.rb

@@ -5,9 +5,10 @@
 # No necesitamos autenticación aun
 class CollaborationsController < ApplicationController
   include Pundit
+  include StrongParamsHelper
 
   def collaborate
-    @site = Site.find_by_name(params[:site_id])
+    @site = Site.find_by_name(pluck_param(:site_id))
     authorize Collaboration.new(@site)
 
     @invitade = current_usuarie || @site.usuaries.build
@@ -21,7 +22,7 @@ class CollaborationsController < ApplicationController
   #
   # * Si le usuarie existe y no está logueade, pedirle la contraseña
   def accept_collaboration
-    @site = Site.find_by_name(params[:site_id])
+    @site = Site.find_by_name(pluck_param(:site_id))
     authorize Collaboration.new(@site)
 
     @invitade = current_usuarie

app/controllers/posts_controller.rb

@@ -2,6 +2,8 @@
 
 # Controlador para artículos
 class PostsController < ApplicationController
+  include StrongParamsHelper
+
   before_action :authenticate_usuarie!
   before_action :service_for_direct_upload, only: %i[new edit]
 
@@ -15,6 +17,82 @@ class PostsController < ApplicationController
     { locale: locale }
   end
 
+  # @todo Mover a tu propio scope
+  def new_array
+    @value = pluck_param(:value)
+    @name = pluck_param(:name)
+    id = pluck_param(:id)
+
+    headers['HX-Trigger-After-Swap'] = 'htmx:resetForm'
+
+    render layout: false
+  end
+
+  def new_array_value
+    @value = pluck_param(:value)
+
+    render layout: false
+  end
+
+  def new_related_post
+    @uuid = pluck_param(:value)
+
+    @indexed_post = site.indexed_posts.find_by!(post_id: @uuid)
+
+    render layout: false
+  end
+
+  def new_has_one
+    @uuid = pluck_param(:value)
+
+    @indexed_post = site.indexed_posts.find_by!(post_id: @uuid)
+
+    render layout: false
+  end
+
+  # El formulario de un Post, si pasamos el UUID, estamos editando, sino
+  # estamos creando.
+  def form
+    uuid = pluck_param(:uuid, optional: true)
+    locale
+
+    @post =
+      if uuid.present?
+        site.indexed_posts.find_by!(post_id: uuid).post
+      else
+        # @todo Usar la base de datos
+        site.posts(lang: locale).build(layout: pluck_param(:layout))
+      end
+
+    swap_modals
+
+    render layout: false
+  end
+
+  # Genera un modal completo
+  #
+  # @todo recibir el atributo anterior
+  # @param :uuid [String] UUID del post (opcional)
+  # @param :layout [String] El layout a cargar (opcional)
+  def modal
+    uuid = pluck_param(:uuid, optional: true)
+    locale
+
+    # @todo hacer que si el uuid no existe se genera un post, para poder
+    # pasar el uuid sabiendolo
+    @post =
+      if uuid.present?
+        site.indexed_posts.find_by!(post_id: uuid).post
+      else
+        # @todo Usar la base de datos
+        site.posts(lang: locale).build(layout: pluck_param(:layout))
+      end
+
+    swap_modals
+
+    render layout: false
+  end
+
   def index
     authorize Post
 
@@ -55,7 +133,7 @@ class PostsController < ApplicationController
 
   def new
     authorize Post
-    @post = site.posts(lang: locale).build(layout: params[:layout])
+    @post = site.posts(lang: locale).build(layout: pluck_param(:layout))
 
     breadcrumb I18n.t('loaf.breadcrumbs.posts.new', layout: @post.layout.humanized_name.downcase), ''
   end
@@ -65,13 +143,34 @@ class PostsController < ApplicationController
     service = PostService.new(site: site,
                               usuarie: current_usuarie,
                               params: params)
-    @post = service.create
+    @post = service.create_or_update
 
-    if @post.persisted?
+    if post.persisted?
       site.touch
       forget_content
+    end
 
-      redirect_to site_post_path(@site, @post)
+    # @todo Enviar la creación a otro endpoint para evitar tantas
+    # condiciones.
+    if htmx?
+      if post.persisted?
+        triggers = { 'notification:show' => { 'id' => pluck_param(:saved, optional: true) } }
+
+        swap_modals(triggers)
+
+        @value = post.title.value
+        @uuid = post.uuid.value
+        @name = pluck_param(:name)
+
+        render render_path_from_attribute, layout: false
+      else
+        headers['HX-Retarget'] = "##{pluck_param(:form)}"
+        headers['HX-Reswap'] = 'outerHTML'
+
+        render 'posts/form', layout: false, post: post, site: site, **params.permit(:form, :base, :dir, :locale)
+      end
+    elsif post.persisted?
+      redirect_to site_post_path(site, post)
     else
       render 'posts/new'
     end
@@ -83,6 +182,16 @@ class PostsController < ApplicationController
     breadcrumb 'posts.edit', ''
   end
 
+  # Este endpoint se encarga de actualizar el post. Si el post se edita
+  # desde el formulario principal, re-renderizamos el formulario si hay
+  # errores o enviamos a otro lado al guardar.
+  #
+  # Si los datos llegaron por HTMX, hay que regenerar el formulario
+  # y reemplazarlo en su modal (?) o responder con su tarjeta para
+  # reemplazarla donde sea que esté.
+  #
+  # @todo la re-renderización del formulario no es necesaria si tenemos
+  # validación client-side.
   def update
     authorize post
 
@@ -94,7 +203,37 @@ class PostsController < ApplicationController
     if service.update.persisted?
       site.touch
       forget_content
+    end
 
+    if htmx?
+      if post.persisted?
+        triggers = { 'notification:show' => pluck_param(:saved, optional: true) }
+
+        swap_modals(triggers)
+
+        @value = post.title.value
+        @uuid = post.uuid.value
+
+        if (result_id = pluck_param(:result_id, optional: true))
+          headers['HX-Retarget'] = "##{result_id}"
+          headers['HX-Reswap'] = 'outerHTML'
+
+          @indexed_post = site.indexed_posts.find_by_post_id(post.uuid.value)
+
+          render 'posts/new_related_post', layout: false
+        # @todo Confirmar que esta ruta no esté transitada
+        else
+          @name = pluck_param(:name)
+
+          render render_path_from_attribute, layout: false
+        end
+      else
+        headers['HX-Retarget'] = "##{params.require(:form)}"
+        headers['HX-Reswap'] = 'outerHTML'
+
+        render 'posts/form', layout: false, post: post, site: site, **params.permit(:form, :base, :dir, :locale)
+      end
+    elsif post.persisted?
       redirect_to site_post_path(site, post)
     else
       render 'posts/edit'
@@ -168,4 +307,24 @@ class PostsController < ApplicationController
   def service_for_direct_upload
     session[:service_name] = site.name.to_sym
   end
+
+  # @param triggers [Hash] Otros disparadores
+  def swap_modals(triggers = {})
+    params.permit(:show, :hide).each_pair do |key, value|
+      triggers["modal:#{key}"] = { id: value } if value.present?
+    end
+
+    headers['HX-Trigger'] = triggers.to_json if triggers.present?
+  end
+
+  # @return [String]
+  def render_path_from_attribute
+    case pluck_param(:attribute)
+    when 'new_has_many' then 'posts/new_has_many_value'
+    when 'new_belongs_to' then 'posts/new_belongs_to_value'
+    when 'new_has_and_belongs_to_many' then 'posts/new_has_many_value'
+    when 'new_has_one' then 'posts/new_has_one_value'
+    else 'nothing'
+    end
+  end
 end

app/controllers/stats_controller.rb

@@ -59,9 +59,6 @@ class StatsController < ApplicationController
                       .order('sum(value) desc')
                       .sum(:value)
                       .transform_values(&:to_i)
-                      .transform_values do |v|
-                        v * nodes
-                      end
         end
     end
   end
@@ -73,9 +70,6 @@ class StatsController < ApplicationController
     stats = rollup_scope.where_dimensions(host: hostnames).multi_series('host', interval: interval).tap do |series|
       series.each do |serie|
         serie[:name] = serie.dig(:dimensions, 'host')
-        serie[:data].transform_values! do |value|
-          value * nodes
-        end
       end
     end
 
@@ -99,9 +93,6 @@ class StatsController < ApplicationController
     stats = rollup_scope.where_dimensions(**options).multi_series('host|uri', interval: interval).tap do |series|
       series.each do |serie|
         serie[:name] = serie[:dimensions].slice('host', 'uri').values.join.sub('/index.html', '/')
-        serie[:data].transform_values! do |value|
-          value * nodes
-        end
       end
     end
 
@@ -197,21 +188,6 @@ class StatsController < ApplicationController
     end
   end
 
-  # Obtiene la cantidad de nodos de Sutty, para poder calcular la
-  # cantidad de visitas.
-  #
-  # Como repartimos las visitas por nodo rotando las IPs en el
-  # nameserver y los resolvedores de DNS eligen un nameserver
-  # aleatoriamente, la cantidad de visitas se reparte
-  # equitativamente.
-  #
-  # XXX: Remover cuando podamos centralizar los AccessLog
-  #
-  # @return [Integer]
-  def nodes
-    @nodes ||= ENV.fetch('NODES', 1).to_i
-  end
-
   def period
     @period ||= begin
       p = params.permit(:period_start, :period_end)

app/helpers/application_helper.rb

@@ -2,6 +2,19 @@
 
 # Helpers
 module ApplicationHelper
+  BRACKETS = /[\[\]]/.freeze
+  ALPHA_LARGE = [*'a'..'z', *'A'..'Z'].freeze
+
+  # Devuelve un indentificador aleatorio que puede usarse como atributo
+  # HTML. Reemplaza Nanoid. El primer caracter siempre es alfabético.
+  #
+  # @return [String]
+  def random_id
+    SecureRandom.urlsafe_base64.tap do |s|
+      s[0] = ALPHA_LARGE.sample
+    end
+  end
+
   # Devuelve el atributo name de un campo anidado en el formato que
   # esperan los helpers *_field
   #
@@ -19,6 +32,14 @@ module ApplicationHelper
     [root, name]
   end
 
+  # Obtiene un ID
+  #
+  # @param base [String]
+  # @param attribute [String, Symbol]
+  def id_for(base, attribute)
+    "#{base.gsub(BRACKETS, '_')}_#{attribute}".squeeze('_')
+  end
+
   def plain_field_name_for(*names)
     root, name = field_name_for(*names)
 
@@ -134,9 +155,17 @@ module ApplicationHelper
 
   private
 
+  # Obtiene la traducción desde el esquema en el idioma actual, o por
+  # defecto en el idioma del sitio.  De lo contrario trae una traducción
+  # genérica.
+  #
+  # Si el idioma por defecto tiene un String vacía, se asume que no
+  # texto.
+  #
+  # @return [String,nil]
   def post_t(*attribute, post:, type:)
-    post.layout.metadata.dig(*attribute, type.to_s, I18n.locale.to_s) ||
-      post.layout.metadata.dig(*attribute, type.to_s, I18n.default_locale.to_s) ||
-      I18n.t("posts.attributes.#{attribute.join('.')}.#{type}")
+    post.layout.metadata.dig(*attribute, type.to_s, I18n.locale.to_s).presence ||
+      post.layout.metadata.dig(*attribute, type.to_s, post.site.default_locale.to_s) ||
+      I18n.t("posts.attributes.#{attribute.join('.')}.#{type}").presence
   end
 end

app/helpers/strong_params_helper.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+# Métodos reutilizables para trabajar con StrongParams
+module StrongParamsHelper
+
+  # Obtiene el valor de un param
+  #
+  # @todo No hay una forma mejor de hacer esto?
+  # @param param [Symbol]
+  # @param :optional [Bool]
+  # @return [nil,String]
+  def pluck_param(param, optional: false)
+    if optional
+      params.permit(param).values.first.presence
+    else
+      params.require(param).presence
+    end
+  end
+end

app/javascript/controllers/array_controller.js

@@ -0,0 +1,138 @@
+import { Controller } from "@hotwired/stimulus";
+
+export default class extends Controller {
+  static targets = ["item", "search", "current", "placeholder"];
+
+  connect() {
+    // TODO: Stimulus >1
+    this.newArrayValueURL = new URL(window.location.origin);
+
+    const [ pathname, search ] = this.element.dataset.arrayNewArrayValue.split("?");
+
+    this.newArrayValueURL.pathname = pathname;
+    this.newArrayValueURL.search = `?${search}`;
+    this.originalValue = JSON.parse(this.element.dataset.arrayOriginalValue);
+  }
+
+  /*
+   * Al eliminar el ítem, buscamos por su ID y lo eliminamos del
+   * documento.
+   */
+  remove(event) {
+    // TODO: Stimulus >1
+    event.preventDefault();
+
+    this.itemTargets
+      .find((x) => x.id === event.target.dataset.removeTargetParam)
+      ?.remove();
+  }
+
+  /*
+   * Al buscar, eliminamos las tildes y mayúsculas para no depender de
+   * cómo se escribió.
+   *
+   * Luego buscamos eso en el valor limpio, ignorando los items que ya
+   * están activados.
+   *
+   * Si el término de búsqueda está vacío, volvemos a la lista original.
+   */
+  search(event) {
+    const needle = this.searchTarget.value
+      .normalize("NFD")
+      .replace(/[\u0300-\u036f]/g, "")
+      .toLowerCase()
+      .trim();
+
+    if (needle) {
+      for (const itemTarget of this.itemTargets) {
+        itemTarget.style.display =
+          itemTarget.querySelector("input")?.checked ||
+          itemTarget.dataset.searchableValue.includes(needle)
+            ? ""
+            : "none";
+      }
+    } else {
+      for (const itemTarget of this.itemTargets) {
+        itemTarget.style.display = "";
+      }
+    }
+  }
+
+  /*
+   * Obtiene el input de un elemento
+   *
+   * @param [HTMLElement]
+   * @return [HTMLElement,nil]
+   */
+  inputFrom(target) {
+    if (target.tagName === "INPUT") return target;
+
+    return target.querySelector("input");
+  }
+
+  /*
+   * Detecta si el item es o contiene un checkbox/radio activado.
+   *
+   * @param [HTMLElement]
+   * @return [Bool]
+   */
+  isChecked(itemTarget) {
+    return this.inputFrom(itemTarget)?.checked || false;
+  }
+
+  cancelWithEscape(event) {
+    if (event?.key !== "Escape") return;
+
+    this.cancel();
+  }
+
+  /*
+   * Al cancelar, se vuelve al estado original de la lista
+   */
+  cancel(event = undefined) {
+    for (const itemTarget of this.itemTargets) {
+      const input = this.inputFrom(itemTarget);
+
+      input.checked = this.originalValue.includes(itemTarget.dataset.value);
+    }
+  }
+
+  /*
+   * Al aceptar, se envía todo el listado de valores nuevos al _backend_
+   * para que devuelva la representación de cada ítem en HTML. Además,
+   * se guarda el nuevo valor como la lista original, para la próxima
+   * cancelación.
+   */
+  accept(event) {
+    this.currentTarget.innerHTML = "";
+    this.originalValue = [];
+
+    const signal = window.abortController?.signal;
+
+    for (const itemTarget of this.itemTargets) {
+      if (!itemTarget.dataset.value) continue;
+      if (!this.isChecked(itemTarget)) continue;
+
+      this.originalValue.push(itemTarget.dataset.value);
+      this.newArrayValueURL.searchParams.set("value", itemTarget.dataset?.sendValue || itemTarget.dataset?.value);
+
+      const placeholder = this.placeholderTarget.content.firstElementChild.cloneNode(true);
+
+      this.currentTarget.appendChild(placeholder);
+
+      fetch(this.newArrayValueURL, { signal })
+        .then((response) => response.text())
+        .then((body) => {
+          const template = document.createElement("template");
+          template.innerHTML = body;
+
+          placeholder.replaceWith(template.content.firstElementChild);
+        });
+    }
+
+    // TODO: Stimulus >1
+    this.element.dataset.arrayOriginalValue = JSON.stringify(
+      this.originalValue,
+    );
+  }
+}

app/javascript/controllers/details_controller.js

@@ -1,4 +1,4 @@
-import { Controller } from "stimulus";
+import { Controller } from "@hotwired/stimulus";
 
 export default class extends Controller {
   static targets = [];

app/javascript/controllers/dropdown_controller.js

@@ -1,4 +1,4 @@
-import { Controller } from "stimulus";
+import { Controller } from "@hotwired/stimulus";
 
 // https://getbootstrap.com/docs/4.6/components/dropdowns/#single-button
 export default class extends Controller {

app/javascript/controllers/enter_controller.js

@@ -0,0 +1,10 @@
+import { Controller } from "@hotwired/stimulus";
+
+export default class extends Controller {
+  /*
+   * Previene el envío de un formulario al presionar enter
+   */
+  prevent(event) {
+    if (event.key == "Enter") event.preventDefault();
+  }
+}

app/javascript/controllers/file_preview_controller.js

@@ -1,4 +1,4 @@
-import { Controller } from 'stimulus'
+import { Controller } from '@hotwired/stimulus'
 import bsCustomFileInput from "bs-custom-file-input";
 
 document.addEventListener("turbolinks:load", () => {

app/javascript/controllers/form_validation_controller.js

@@ -0,0 +1,53 @@
+import { Controller } from "@hotwired/stimulus";
+
+export default class extends Controller {
+  static targets = ["invalid", "submitting"];
+
+  // @todo Stimulus >1
+  get submittingIdValue() {
+    return this.element.dataset?.formValidationSubmittingIdValue;
+  }
+
+  // @todo Stimulus >1
+  get invalidIdValue() {
+    return this.element.dataset?.formValidationInvalidIdValue;
+  }
+
+  connect() {
+    this.element.setAttribute("novalidate", true);
+
+    for (const input of this.element.elements) {
+      if (input.type === "button" || input.type === "submit") continue;
+
+      if (input.dataset.action) {
+        input.dataset.action = `${input.dataset.action} htmx:validation:validate->form-validation#submit`;
+      } else {
+        input.dataset.action = "htmx:validation:validate->form-validation#submit";
+      }
+    }
+  }
+
+  submit(event = undefined) {
+    if (this.submitting) return;
+
+    this.submitting = true;
+
+    event?.preventDefault();
+
+    if (this.element.reportValidity()) {
+      this.element.classList.remove("was-validated");
+
+      if (!this.element.getAttributeNames().some(x => x.startsWith("hx-"))) this.element.submit();
+
+      window.dispatchEvent(new CustomEvent("notification:show", { detail: { value: this.submittingIdValue } }));
+    } else {
+      event?.stopPropagation();
+
+      this.element.classList.add("was-validated");
+
+      window.dispatchEvent(new CustomEvent("notification:show", { detail: { value: this.invalidIdValue } }));
+    }
+
+    this.submitting = false;
+  }
+}

app/javascript/controllers/geo_controller.js

@@ -1,4 +1,4 @@
-import { Controller } from 'stimulus'
+import { Controller } from '@hotwired/stimulus'
 
 require("leaflet/dist/leaflet.css")
 import L from 'leaflet'

app/javascript/controllers/htmx_controller.js

@@ -0,0 +1,107 @@
+import { Controller } from "@hotwired/stimulus";
+
+/*
+ * Un controlador que imita a HTMX
+ */
+export default class extends Controller {
+  connect() {
+    // @todo Convertir en <template>
+    this.placeholder = "<span class=\"placeholder w-100\" aria-hidden=\"true\"></span>";
+  }
+
+  /*
+   * Obtiene la URL y elimina la acción.
+   *
+   * @param event [Event]
+   */
+  getUrlOnce(event) {
+    this.getUrl(event);
+
+    event.target.dataset.action = event.target.dataset.action.replace("htmx#getUrlOnce", "").trim();
+  }
+
+  /*
+   * Lanza el evento que va a descargar la URL y agregarse en algún
+   * lado.
+   *
+   * @param event [Event]
+   */
+  getUrl(event) {
+    // @todo Stimulus >1
+    const value = event.target.dataset.htmxGetUrlParam;
+
+    if (value) {
+      window.dispatchEvent(new CustomEvent("htmx:getUrl", { detail: { value } }));
+    } else {
+      console.error("Missing data-htmx-get-url-param attribute on element", event.target);
+    }
+  }
+
+  /*
+   * Realiza una petición.
+   *
+   * @param url [String]
+   * @return [Promise<Response>]
+   */
+  async request(url) {
+    const headers = new Headers();
+    const signal = window.abortController?.signal;
+
+    headers.set("HX-Request", "true");
+
+    return fetch(url, { headers, signal });
+  }
+
+  /*
+   * Obtiene la URL enviada por el evento y reemplaza el contenido del
+   * elemento.
+   */
+  async swap(event) {
+    const response = await this.request(event.detail.value);
+
+    if (response.ok) {
+      this.element.innerHTML = this.placeholder;
+      this.element.innerHTML = await response.text();
+      this.triggerEvents(response.headers);
+      window.htmx.process(this.element);
+    } else {
+      console.error(response);
+    }
+  }
+
+  /*
+   * Agrega el resultado de la descarga al final del elemento.
+   */
+  async beforeend(event) {
+    const response = await this.request(event.detail.value);
+
+    if (response.ok) {
+      this.element.insertAdjacentHTML("beforeend", this.placeholder);
+      this.element.lastElementChild.outerHTML = await response.text();
+
+      this.triggerEvents(response.headers);
+
+      // @todo Asume que cada endpoint solo devuelve un elemento por vez
+      window.htmx.process(this.element.lastElementChild);
+    } else {
+      console.error(response);
+    }
+  }
+
+  /*
+   * Lanza los eventos que vienen con la respuesta.
+   */
+  triggerEvents(headers) {
+    if (!headers.has("HX-Trigger")) return;
+
+    const events = JSON.parse(headers.get("HX-Trigger"));
+
+    setTimeout(() => {
+      for (const event in events) {
+        const detail = events[event];
+
+        window.dispatchEvent(new CustomEvent(event, { detail }));
+      }
+    }, 1);
+  }
+}

app/javascript/controllers/index.js

@@ -1,8 +1,8 @@
 // Load all the controllers within this directory and all subdirectories. 
 // Controller files must be named *_controller.js.
 
-import { Application } from "stimulus"
-import { definitionsFromContext } from "stimulus/webpack-helpers"
+import { Application } from "@hotwired/stimulus"
+import { definitionsFromContext } from "@hotwired/stimulus-webpack-helpers"
 
 const application = Application.start()
 const context = require.context("controllers", true, /_controller\.js$/)

app/javascript/controllers/modal_controller.js

@@ -0,0 +1,95 @@
+import { Controller } from "@hotwired/stimulus";
+
+export default class extends Controller {
+  static targets = ["modal", "backdrop"];
+
+  // TODO: Stimulus >1
+  connect() {
+    this.showEvent = this.show.bind(this);
+    this.hideEvent = this.hide.bind(this);
+
+    window.addEventListener("modal:show", this.showEvent);
+    window.addEventListener("modal:hide", this.hideEvent);
+  }
+
+  // TODO: Stimulus >1
+  disconnect() {
+    window.removeEventListener("modal:show", this.showEvent);
+    window.removeEventListener("modal:hide", this.hideEvent);
+  }
+
+  /*
+   * Abrir otro modal, enviando el ID a toda la ventana.
+   */
+  showAnother(event = undefined) {
+    event?.preventDefault();
+
+    if (!event.target?.dataset?.modalShowValue) return;
+
+    window.dispatchEvent(new CustomEvent("modal:show", { detail: { id: event.target.dataset.modalShowValue, previousFocus: event.target.id } }));
+  }
+
+  /*
+   * Podemos enviar la orden de apertura como un click o como un
+   * CustomEvent incluyendo el id del modal como detail.
+   *
+   * El elemento clicleable puede tener un valor que se refiera a otro
+   * modal también.
+   */
+  show(event = undefined) {
+    event?.preventDefault();
+    const modalId = event?.detail?.id;
+
+    if (modalId && this.element.id !== modalId) return;
+
+    this.modalTarget.style.display = "block";
+    this.backdropTarget.style.display = "block";
+    this.modalTarget.setAttribute("role", "dialog");
+    this.modalTarget.setAttribute("aria-modal", true);
+    this.modalTarget.removeAttribute("aria-hidden");
+
+    window.document.body.classList.add("modal-open");
+
+    if (event?.detail?.previousFocus) {
+      this.previousFocus = window.document.getElementById(event.detail.previousFocus);
+    } else {
+      this.previousFocus = event?.target;
+    }
+
+    setTimeout(() => {
+      this.modalTarget.classList.add("show");
+      this.backdropTarget.classList.add("show");
+
+      this.modalTarget.focus();
+    }, 1);
+  }
+
+  hideWithEscape(event) {
+    if (event?.key !== "Escape") return;
+
+    this.hide();
+  }
+
+  hide(event = undefined) {
+    event?.preventDefault();
+    const modalId = event?.detail?.id;
+
+    if (modalId && this.element.id !== modalId) return;
+
+    this.backdropTarget.classList.remove("show");
+    this.modalTarget.classList.remove("show");
+
+    this.modalTarget.setAttribute("aria-hidden", true);
+    this.modalTarget.removeAttribute("role");
+    this.modalTarget.removeAttribute("aria-modal");
+
+    this.previousFocus?.focus();
+
+    setTimeout(() => {
+      this.modalTarget.style.display = "";
+      this.backdropTarget.style.display = "";
+    }, 500);
+
+    window.document.body.classList.remove("modal-open");
+  }
+}

app/javascript/controllers/new_editor_controller.js

@@ -0,0 +1,18 @@
+import { Controller } from "@hotwired/stimulus";
+import SuttyEditor from "@suttyweb/editor";
+
+import "@suttyweb/editor/dist/style.css";
+
+export default class extends Controller {
+  static targets = ["textarea"];
+
+  connect() {
+    this.editor =
+      new SuttyEditor({
+        target: this.element,
+        props: {
+          textareaEl: this.textareaTarget,
+        },
+      });
+  }
+}

app/javascript/controllers/non_geo_controller.js

@@ -1,4 +1,4 @@
-import { Controller } from 'stimulus'
+import { Controller } from '@hotwired/stimulus'
 
 require("leaflet/dist/leaflet.css")
 import L from 'leaflet'

app/javascript/controllers/notification_controller.js

@@ -0,0 +1,43 @@
+import { Controller } from "@hotwired/stimulus";
+
+/*
+ * Solo se puede mostrar una notificación a la vez
+ */
+export default class extends Controller {
+  // @todo Stimulus >1
+  get showClasses() {
+    return (this.element.dataset?.notificationShowClass || "").split(" ").filter(x => x);
+  }
+
+  // @todo Stimulus >1
+  get hideClasses() {
+    return (this.element.dataset?.notificationHideClass || "").split(" ").filter(x => x);
+  }
+
+  /*
+   * Al recibir el evento de mostrar, si no está dirigido al elemento
+   * actual, se oculta.
+   */
+  show(event = undefined) {
+    if (event?.detail?.value !== this.element.id) {
+      this.hide({ detail: { value: this.element.id } });
+      return;
+    }
+
+    this.element.classList.remove("d-none");
+
+    setTimeout(() => {
+      this.element.classList.remove(...this.hideClasses);
+      this.element.classList.add(...this.showClasses);
+    }, 1);
+  }
+
+  hide(event = undefined) {
+    if (event?.detail?.value !== this.element.id) return;
+
+    this.element.classList.remove(...this.showClasses);
+    this.element.classList.add(...this.hideClasses);
+
+    setTimeout(() => this.element.classList.add("d-none"), 150);
+  }
+}

app/javascript/controllers/reorder_controller.js

@@ -1,4 +1,4 @@
-import { Controller } from 'stimulus'
+import { Controller } from '@hotwired/stimulus'
 
 /*
  * Permite reordenar las filas de una tabla.

app/javascript/controllers/required_checkbox_controller.js

@@ -0,0 +1,53 @@
+import { Controller } from "@hotwired/stimulus";
+
+/*
+ * Para poder indicar que al menos uno del grupo de checkboxes es
+ * obligatorio, marcamos uno como `required` (que es el que mostraría el
+ * error) y se lo quitamos cuando detectamos que alguno cambió.
+ */
+export default class extends Controller {
+  static targets = ["required", "checkbox"];
+
+  connect() {
+  }
+
+  checkboxTargetConnected(checkboxTarget) {
+    if (checkboxTarget.checked) {
+      this.requiredTarget.required = false;
+      this.revalid();
+    }
+  }
+
+  /*
+   * El grupo deja de ser obligatorio cuando al menos uno está activo.
+   */
+  change(event = undefined) {
+    if (event.target.checked) {
+      this.requiredTarget.required = false;
+    } else {
+      this.requiredTarget.required = !Array.from(this.checkboxTargets).some(x => x.checked);
+    }
+
+    for (const checkbox of this.checkboxTargets) {
+      if (checkbox === event.target) continue;
+
+      checkbox.required = !event.target.checked;
+    }
+  }
+
+  /*
+   * Si el checkbox es considerado inválido, transmitir todos los
+   * estados a los checkboxes.
+   */
+  invalid(event = undefined) {
+    for (const checkbox of this.checkboxTargets) {
+      checkbox.required = true;
+    }
+  }
+
+  revalid(event = undefined) {
+    for (const checkbox of this.checkboxTargets) {
+      checkbox.required = false;
+    }
+  }
+}

app/javascript/controllers/select_all_controller.js

@@ -1,4 +1,4 @@
-import { Controller } from "stimulus";
+import { Controller } from "@hotwired/stimulus";
 
 export default class extends Controller {
   static targets = ["toggle", "input"];

app/javascript/controllers/unsaved_changes_controller.js

@@ -0,0 +1,55 @@
+import { Controller } from "@hotwired/stimulus";
+
+export default class extends Controller {
+  connect() {
+    this.originalFormDataSerialized = this.serializeFormData(this.element);
+    this.submitting = false;
+  }
+
+  submit(event) {
+    this.submitting = true;
+  }
+
+  unsaved(event) {
+    if (this.submitting) return;
+    if (!this.hasChanged()) return;
+
+    this.submitting = false;
+
+    event.preventDefault();
+
+    event.returnValue = true;
+  }
+
+  unsavedTurbolinks(event) {
+    if (this.submitting) return;
+    if (!this.hasChanged()) return;
+
+    this.submitting = false;
+
+    if (window.confirm(this.element.dataset.unsavedChangesConfirmValue)) return;
+
+    event.preventDefault();
+  }
+
+  formData(form) {
+    const formData = new FormData(form);
+
+    formData.delete("authenticity_token");
+
+    return formData;
+  }
+
+  /*
+   * Elimina saltos de línea y espacios al serializar, para evitar
+   * detectar cambios cuando cambió el espaciado, por ejemplo cuando el
+   * editor con formato aplica espacios o elimina saltos de línea.
+   */
+  serializeFormData(form) {
+    return (new URLSearchParams(this.formData(form))).toString().replaceAll("+", "").replaceAll("%0A", "");
+  }
+
+  hasChanged() {
+    return (this.originalFormDataSerialized !== this.serializeFormData(this.element));
+  }
+}

app/javascript/etc/htmx_abort.js

@@ -5,3 +5,7 @@ document.addEventListener("turbolinks:click", () => {
     window.htmx.trigger(hx, "htmx:abort");
   }
 });
+
+document.addEventListener("htmx:resetForm", (event) => {
+  event.target.reset();
+});

app/javascript/etc/index.js

@@ -4,6 +4,4 @@ import './input-tag'
 import './prosemirror'
 import './timezone'
 import './turbolinks-anchors'
-import './validation'
-import './new_editor'
 import './htmx_abort'

app/javascript/etc/new_editor.js

@@ -1,14 +0,0 @@
-import SuttyEditor from "@suttyweb/editor";
-
-import "@suttyweb/editor/dist/style.css";
-
-document.addEventListener("turbolinks:load", () => {
-  document.querySelectorAll(".new-editor").forEach((editorContainer) => {
-    new SuttyEditor({
-      target: editorContainer,
-      props: {
-        textareaEl: editorContainer.querySelector("textarea"),
-      },
-    });
-  });
-});

app/javascript/etc/validation.js

@@ -1,34 +0,0 @@
-document.addEventListener('turbolinks:load', () => {
-  // Al enviar el formulario del artículo, aplicar la validación
-  // localmente y actualizar los comentarios para lectores de pantalla.
-  document.querySelectorAll('form').forEach(form => {
-    form.addEventListener('submit', event => {
-      const invalid_help = form.querySelectorAll('.invalid-help')
-      const sending_help = form.querySelectorAll('.sending-help')
-
-      invalid_help.forEach(i => i.classList.add('d-none'))
-      sending_help.forEach(i => i.classList.add('d-none'))
-
-      form.querySelectorAll('[aria-invalid="true"]').forEach(aria => {
-        aria.setAttribute('aria-invalid', false)
-        aria.setAttribute('aria-describedby', aria.parentElement.querySelector('.feedback').id)
-      })
-
-      if (form.checkValidity() === false) {
-        event.preventDefault()
-        event.stopPropagation()
-
-        invalid_help.forEach(i => i.classList.remove('d-none'))
-
-        form.querySelectorAll(':invalid').forEach(invalid => {
-          invalid.setAttribute('aria-invalid', true)
-          invalid.setAttribute('aria-describedby', invalid.parentElement.querySelector('.invalid-feedback').id)
-        })
-      } else {
-        sending_help.forEach(i => i.classList.remove('d-none'))
-      }
-
-      form.classList.add('was-validated')
-    })
-  })
-})

app/javascript/packs/application.js

@@ -41,4 +41,5 @@ Rails.start()
 Turbolinks.start()
 ActiveStorage.start()
 
-window.htmx = require('htmx.org/dist/htmx.js')
+window.htmx = require("@suttyweb/htmx.org/dist/htmx.cjs.js");
+window.htmx.config.selfRequestsOnly = true;

app/lib/core_extensions/string/remove_diacritics.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module CoreExtensions
+  module String
+    # Elimina tildes
+    module RemoveDiacritics
+      def remove_diacritics
+        unicode_normalize(:nfd).gsub(/[^\x00-\x7F]/, '')
+      end
+    end
+  end
+end

app/models/concerns/metadata/unused_values_concern.rb

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Metadata
+  # Hasta ahora veníamos habilitando la opción de romper
+  # retroactivamente relaciones, sin informar que estaba sucediendo.
+  # Con este módulo, todas las relaciones que ya tienen una relación
+  # inversa son ignoradas.
+  module UnusedValuesConcern
+    extend ActiveSupport::Concern
+
+    included do
+      # Excluye el Post actual y todos los que ya tengan una relación
+      # inversa, para no romperla.
+      #
+      # @return [Array]
+      def values
+        @values ||= posts.map do |p|
+          next if p.uuid.value == post.uuid.value
+
+          disabled = false
+
+          # El campo está deshabilitado si está completo y no incluye el
+          # post actual.
+          if inverse?
+            disabled = p[inverse].present? && ![p[inverse].value].flatten.include?(post.uuid.value)
+          end
+
+          [title(p), p.uuid.value, disabled]
+        end.compact
+      end
+    end
+  end
+end

app/models/metadata_array.rb

@@ -19,8 +19,12 @@ class MetadataArray < MetadataTemplate
     true && !private?
   end
 
+  def titleize?
+    true
+  end
+
   def to_s
-    value.join(', ')
+    value.select(&:present?).join(', ')
   end
 
   # Obtiene el valor desde el documento, convirtiéndolo a Array si no lo

app/models/metadata_belongs_to.rb

@@ -13,6 +13,10 @@ class MetadataBelongsTo < MetadataRelatedPosts
     ''
   end
 
+  def to_s
+    belongs_to.try(:title).try(:value).to_s
+  end
+
   # Obtiene el valor desde el documento.
   #
   # @return [String]
@@ -20,14 +24,6 @@ class MetadataBelongsTo < MetadataRelatedPosts
     document.data[name.to_s]
   end
 
-  def validate
-    super
-
-    errors << I18n.t('metadata.belongs_to.missing_post') unless post_exists?
-
-    errors.empty?
-  end
-
   # Guardar y guardar la relación inversa también, eliminando la
   # relación anterior si existía.
   def save
@@ -97,6 +93,6 @@ class MetadataBelongsTo < MetadataRelatedPosts
   end
 
   def sanitize(uuid)
-    uuid.to_s.gsub(/[^a-f0-9\-]/i, '')
+    uuid.to_s.gsub(/[^a-f0-9-]/i, '')
   end
 end

app/models/metadata_content.rb

@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'htmlbeautifier'
+
 # Se encarga del contenido del artículo y quizás otros campos que
 # requieran texto largo.
 class MetadataContent < MetadataTemplate
@@ -86,7 +88,7 @@ class MetadataContent < MetadataTemplate
       end
     end
 
-    html.to_s.html_safe
+    HtmlBeautifier.beautify(html.to_s).html_safe
   end
 
   # Limpia estilos en base a una lista de permitidos

app/models/metadata_file.rb

@@ -18,6 +18,18 @@ class MetadataFile < MetadataTemplate
   # XXX: Esto ayuda a deserializar en {Site#everything_of}
   def values; end
 
+  # Usar la descripción
+  def titleize?
+    true
+  end
+
+  # Devolver la descripción
+  #
+  # @return [String]
+  def to_s
+    value['description'].to_s
+  end
+
   def validate
     super
 

app/models/metadata_geo.rb

@@ -14,7 +14,7 @@ class MetadataGeo < MetadataTemplate
     return true unless changed?
     return true if empty?
 
-    self[:value] = value.transform_values(&:to_f)
+    self[:value] = value.transform_values(&:to_f).to_h
     self[:value] = encrypt(value) if private?
 
     true

app/models/metadata_has_many.rb

@@ -36,10 +36,15 @@ class MetadataHasMany < MetadataRelatedPosts
   def save
     super
 
+    self[:value] = self[:value].uniq
+
     return true unless changed?
     return true unless inverse?
 
     (had_many - has_many).each do |remove|
+      # No modificar nada si la relación ya estaba deshecha
+      next unless remove[inverse]&.value == post.uuid.value
+
       remove[inverse]&.value = remove[inverse].default_value
     end
 

app/models/metadata_new_array.rb

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+# Implementa la nueva interfaz de gestión de valores
+class MetadataNewArray < MetadataArray
+end

app/models/metadata_new_belongs_to.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+# Nueva interfaz
+class MetadataNewBelongsTo < MetadataBelongsTo
+  include Metadata::UnusedValuesConcern
+end

app/models/metadata_new_has_and_belongs_to_many.rb

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+# Nueva interfaz para relaciones muchos a muchos
+class MetadataNewHasAndBelongsToMany < MetadataHasAndBelongsToMany; end

app/models/metadata_new_has_many.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+# Interfaz nueva para uno a muchos
+class MetadataNewHasMany < MetadataHasMany
+  include Metadata::UnusedValuesConcern
+end

app/models/metadata_new_has_one.rb

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+# Nueva interfaz para relaciones 1:1
+class MetadataNewHasOne < MetadataHasOne; end

app/models/metadata_new_predefined_array.rb

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+# Nueva interfaz para arrays predefinidos
+class MetadataNewPredefinedArray < MetadataPredefinedArray; end

app/models/metadata_new_predefined_value.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+# Nueva interfaz
+class MetadataNewPredefinedValue < MetadataPredefinedValue
+  def values
+    @values ||= (required ? {} : { I18n.t('posts.attributes.new_predefined_value.empty') => '' }).merge(super)
+  end
+end

app/models/metadata_predefined_array.rb

@@ -7,4 +7,13 @@ class MetadataPredefinedArray < MetadataArray
       [v[I18n.locale.to_s], k]
     end&.to_h
   end
+
+  # Devolver los valores legibles por humanes
+  #
+  # @todo Debería devolver los valores en el idioma del post, no de le
+  # usuarie
+  # @return [String]
+  def to_s
+    values.invert.select { |x, k| value.include?(x) }.values.join(', ')
+  end
 end

app/models/metadata_predefined_value.rb

@@ -10,6 +10,10 @@ class MetadataPredefinedValue < MetadataString
     @values ||= layout.dig(:metadata, name, 'values', I18n.locale.to_s)&.invert || {}
   end
 
+  def to_s
+    values.invert[value].to_s
+  end
+
   private
 
   # Solo permite almacenar los valores predefinidos.

app/models/metadata_related_posts.rb

@@ -22,10 +22,21 @@ class MetadataRelatedPosts < MetadataArray
     false
   end
 
+  def titleize?
+    false
+  end
+
   def indexable_values
     posts.where(uuid: value).map(&:title).map(&:value)
   end
 
+  # Encuentra el filtro
+  #
+  # @return [Hash]
+  def filter
+    layout.metadata.dig(name, 'filter')&.to_h&.symbolize_keys || {}
+  end
+
   private
 
   # Obtiene todos los posts y opcionalmente los filtra
@@ -34,17 +45,12 @@ class MetadataRelatedPosts < MetadataArray
   end
 
   def title(post)
-    "#{post&.title&.value || post&.slug&.value} #{post&.date&.value.strftime('%F')} (#{post.layout.humanized_name})"
-  end
-
-  # Encuentra el filtro
-  def filter
-    layout.metadata.dig(name, 'filter')&.to_h&.symbolize_keys || {}
+    "#{post&.title&.value || post&.slug&.value} #{post&.date&.value&.strftime('%F')} (#{post.layout.humanized_name})"
   end
 
   def sanitize(uuid)
     super(uuid.map do |u|
-      u.to_s.gsub(/[^a-f0-9\-]/i, '')
+      u.to_s.gsub(/[^a-f0-9-]/i, '')
     end)
   end
 end

app/models/metadata_slug.rb

@@ -25,7 +25,7 @@ require 'jekyll/utils'
 class MetadataSlug < MetadataTemplate
   # Trae el slug desde el título si existe o una string al azar
   def default_value
-    title ? Jekyll::Utils.slugify(title, mode: site.slugify_mode) : SecureRandom.uuid
+    Jekyll::Utils.slugify(title || SecureRandom.uuid, mode: site.slugify_mode)
   end
 
   def value

app/models/metadata_string.rb

@@ -11,6 +11,10 @@ class MetadataString < MetadataTemplate
     true && !private?
   end
 
+  def titleize?
+    true
+  end
+
   private
 
   # No se permite HTML en las strings

app/models/metadata_template.rb

@@ -16,6 +16,11 @@ MetadataTemplate = Struct.new(:site, :document, :name, :label, :type,
     false
   end
 
+  # El valor puede ser parte de un título auto-generado
+  def titleize?
+    false
+  end
+
   def inspect
     "#<#{self.class} site=#{site.name.inspect} post=#{post.id.inspect} value=#{value.inspect}>"
   end

app/models/metadata_text.rb

@@ -1,4 +1,8 @@
 # frozen_string_literal: true
 
 # Un campo de texto largo
-class MetadataText < MetadataString; end
+class MetadataText < MetadataString
+  def titleize?
+    false
+  end
+end

app/models/metadata_title.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+# El título es obligatorio para todos los Post, si el esquema no lo
+# incluye, tenemos que poder generar un valor legible por humanes.
+class MetadataTitle < MetadataString
+  def titleize?
+    false
+  end
+
+  # Siempre recalcular el título
+  def value
+    self[:value] = default_value
+  end
+
+  # Obtener todos los valores de texto del artículo y generar un título
+  # en base a eso.
+  #
+  # @return [String]
+  def default_value
+    post.attributes.select do |attr|
+      post[attr].titleize?
+    end.map do |attr|
+      post[attr].to_s
+    end.compact.join(' ').strip.squeeze(' ')
+  end
+end

app/models/post.rb

@@ -12,9 +12,21 @@ class Post
   DEFAULT_ATTRIBUTES = %i[site document layout].freeze
   # Otros atributos que no vienen en los metadatos
   PRIVATE_ATTRIBUTES = %i[path slug attributes errors].freeze
-  PUBLIC_ATTRIBUTES = %i[lang date uuid created_at].freeze
+  PUBLIC_ATTRIBUTES = %i[title lang date uuid created_at].freeze
+  ALIASED_ATTRIBUTES = %i[locale].freeze
   ATTR_SUFFIXES = %w[? =].freeze
 
+  ATTRIBUTE_DEFINITIONS = {
+    'title' => { 'type' => 'title', 'required' => true },
+    'lang' => { 'type' => 'lang', 'required' => true },
+    'date' => { 'type' => 'document_date', 'required' => true },
+    'uuid' => { 'type' => 'uuid', 'required' => true },
+    'created_at' => { 'type' => 'created_at', 'required' => true },
+    'slug' => { 'type' => 'slug', 'required' => true },
+    'path' => { 'type' => 'path', 'required' => true },
+    'locale' => { 'alias' => 'lang' }
+  }.freeze
+
   class PostError < StandardError; end
   class UnknownAttributeError < PostError; end
 
@@ -49,10 +61,12 @@ class Post
     @layout = args[:layout]
     @site = args[:site]
     @document = args[:document]
-    @attributes = layout.attributes + PUBLIC_ATTRIBUTES
+    @attributes = (layout.attributes + PUBLIC_ATTRIBUTES).uniq
     @errors = {}
     @metadata = {}
 
+    layout.metadata = ATTRIBUTE_DEFINITIONS.merge(layout.metadata).with_indifferent_access
+
     # Leer el documento si existe
     # @todo Asignar todos los valores a self[:value] luego de leer
     document&.read! unless new?
@@ -127,6 +141,7 @@ class Post
         src = element.attributes['src']
 
         next unless src&.value&.start_with? 'public/'
+
         file = MetadataFile.new(site: site, post: self, document: document, layout: layout)
         file.value['path'] = src.value
 
@@ -188,13 +203,13 @@ class Post
   def method_missing(name, *_args)
     # Limpiar el nombre del atributo, para que todos los ayudantes
     # reciban el método en limpio
-    unless attribute? name
-      raise NoMethodError, I18n.t('exceptions.post.no_method', method: name)
-    end
+    raise NoMethodError, I18n.t('exceptions.post.no_method', method: name) unless attribute? name
 
     define_singleton_method(name) do
       template = layout.metadata[name.to_s]
 
+      return public_send(template['alias'].to_sym) if template.key?('alias')
+
       @metadata[name] ||=
         MetadataFactory.build(document: document,
                               post: self,
@@ -210,55 +225,6 @@ class Post
     public_send name
   end
 
-  # TODO: Mover a method_missing
-  def slug
-    @metadata[:slug] ||= MetadataSlug.new(document: document, site: site, layout: layout, name: :slug, type: :slug,
-                                          post: self, required: true)
-  end
-
-  # TODO: Mover a method_missing
-  def date
-    @metadata[:date] ||= MetadataDocumentDate.new(document: document, site: site, layout: layout, name: :date,
-                                                  type: :document_date, post: self, required: true)
-  end
-
-  # TODO: Mover a method_missing
-  def path
-    @metadata[:path] ||= MetadataPath.new(document: document, site: site, layout: layout, name: :path, type: :path,
-                                          post: self, required: true)
-  end
-
-  # TODO: Mover a method_missing
-  def lang
-    @metadata[:lang] ||= MetadataLang.new(document: document, site: site, layout: layout, name: :lang, type: :lang,
-                                          post: self, required: true)
-  end
-
-  alias locale lang
-
-  # TODO: Mover a method_missing
-  def uuid
-    @metadata[:uuid] ||= MetadataUuid.new(document: document, site: site, layout: layout, name: :uuid, type: :uuid,
-                                          post: self, required: true)
-  end
-
-  # La fecha de creación inmodificable del post
-  def created_at
-    @metadata[:created_at] ||= MetadataCreatedAt.new(document: document, site: site, layout: layout, name: :created_at, type: :created_at, post: self, required: true)
-  end
-
-  # Detecta si es un atributo válido o no, a partir de la tabla de la
-  # plantilla
-  def attribute?(mid)
-    included = DEFAULT_ATTRIBUTES.include?(mid) ||
-               PRIVATE_ATTRIBUTES.include?(mid) ||
-               PUBLIC_ATTRIBUTES.include?(mid)
-
-    included = attributes.include? mid if !included && singleton_class.method_defined?(:attributes)
-
-    included
-  end
-
   # Devuelve los strong params para el layout.
   #
   # XXX: Nos gustaría no tener que instanciar Metadata acá, pero depende
@@ -430,6 +396,19 @@ class Post
     @nested_attributes ||= attributes.map { |a| self[a] }.select(&:nested?).map(&:name)
   end
 
+  # Detecta si es un atributo válido o no, a partir de la tabla de la
+  # plantilla
+  def attribute?(mid)
+    included = DEFAULT_ATTRIBUTES.include?(mid) ||
+               PRIVATE_ATTRIBUTES.include?(mid) ||
+               PUBLIC_ATTRIBUTES.include?(mid) ||
+               ALIASED_ATTRIBUTES.include?(mid)
+
+    included = attributes.include? mid if !included && singleton_class.method_defined?(:attributes)
+
+    included
+  end
+
   private
 
   # Levanta un error si al construir el artículo no pasamos un atributo.

app/services/post_service.rb

@@ -3,26 +3,43 @@
 # Este servicio se encarga de crear artículos y guardarlos en git,
 # asignándoselos a une usuarie
 PostService = Struct.new(:site, :usuarie, :post, :params, keyword_init: true) do
+
+  # Si estamos pasando el UUID con los parámetros, el post quizás
+  # existe.
+  #
+  # @return [Post]
+  def create_or_update
+    uuid = params.require(base).permit(:uuid).values.first
+
+    if uuid.blank?
+      create
+    elsif (indexed_post = site.indexed_posts.find_by(post_id: uuid)).present?
+      self.post = indexed_post.post
+      update
+    else
+      create
+    end
+  end
+
   # Crea un artículo nuevo
   #
   # @return Post
   def create
-    self.post = site.posts(lang: locale)
-                    .build(layout: layout)
+    self.post ||= site.posts(lang: locale).build(layout: layout)
     post.usuaries << usuarie
-    post.draft.value = true if site.invitade? usuarie
+    post.draft.value = true if post.attribute?(:draft) && site.invitade?(usuarie)
     post.assign_attributes(post_params)
 
-    params.require(:post).permit(:slug).tap do |p|
+    params.require(base).permit(:slug).tap do |p|
       post.slug.value = p[:slug] if p[:slug].present?
     end
 
     # Crea los posts anidados
-    create_nested_posts! post, params[:post]
+    create_nested_posts! post, params[base]
     post.save
     update_related_posts
 
-    commit(action: :created, add: files)
+    commit(action: :created, add: files) if post.valid?
 
     update_site_license!
 
@@ -46,14 +63,14 @@ PostService = Struct.new(:site, :usuarie, :post, :params, keyword_init: true) do
 
   def update
     post.usuaries << usuarie
-    params[:post][:draft] = true if site.invitade? usuarie
+    params[base][:draft] = true if site.invitade? usuarie
 
     # Eliminar ("mover") el archivo si cambió de ubicación.
     if post.update(post_params)
       rm = []
       rm << post.path.value_was if post.path.changed?
 
-      create_nested_posts! post, params[:post]
+      create_nested_posts! post, params[base]
       update_related_posts
 
       # Es importante que el artículo se guarde primero y luego los
@@ -82,7 +99,7 @@ PostService = Struct.new(:site, :usuarie, :post, :params, keyword_init: true) do
   #
   # { uuid => 2, uuid => 1, uuid => 0 }
   def reorder
-    reorder = params.require(:post).permit(reorder: {})&.dig(:reorder)&.transform_values(&:to_i)
+    reorder = params.require(base).permit(reorder: {})&.dig(:reorder)&.transform_values(&:to_i)
     posts = site.posts(lang: locale).where(uuid: reorder.keys)
 
     files = posts.map do |post|
@@ -105,6 +122,13 @@ PostService = Struct.new(:site, :usuarie, :post, :params, keyword_init: true) do
 
   private
 
+  # La base donde buscar los parámetros
+  #
+  # @return [Symbol]
+  def base
+    @base ||= params.permit(:base).try(:[], :base).try(:to_sym) || :post
+  end
+
   # Una lista de archivos a modificar
   #
   # @return [Set]
@@ -126,7 +150,7 @@ PostService = Struct.new(:site, :usuarie, :post, :params, keyword_init: true) do
 
   # Solo permitir cambiar estos atributos de cada articulo
   def post_params
-    @post_params ||= params.require(:post).permit(post.params).to_h
+    @post_params ||= params.require(base).permit(post.params).to_h
   end
 
   # Eliminar metadatos internos
@@ -137,11 +161,11 @@ PostService = Struct.new(:site, :usuarie, :post, :params, keyword_init: true) do
   end
 
   def locale
-    params.dig(:post, :lang)&.to_sym || I18n.locale
+    params.dig(base, :lang)&.to_sym || I18n.locale
   end
 
   def layout
-    params.dig(:post, :layout) || params[:layout]
+    params.dig(base, :layout) || params[:layout]
   end
 
   # Actualiza los artículos relacionados según los métodos que los
@@ -173,15 +197,16 @@ PostService = Struct.new(:site, :usuarie, :post, :params, keyword_init: true) do
   # Si les usuaries modifican o crean una licencia, considerarla
   # personalizada en el panel.
   def update_site_license!
-    if site.usuarie?(usuarie) && post.layout.name == :license && !site.licencia.custom?
+    return unless site.usuarie?(usuarie) && post.layout.name == :license && !site.licencia.custom?
+
     site.update licencia: Licencia.find_by_icons('custom')
   end
-  end
 
   # Encuentra todos los posts anidados y los crea o modifica
   def create_nested_posts!(post, params)
     post.nested_attributes.each do |nested_attribute|
       nested_metadata = post[nested_attribute]
+      next unless params[nested_metadata].present?
       # @todo find_or_initialize
       nested_post = nested_metadata.has_one || site.posts(lang: post.lang.value).build(layout: nested_metadata.nested)
       nested_params = params.require(nested_attribute).permit(nested_post.params).to_hash

app/views/bootstrap/_alert.haml

@@ -1,2 +1,2 @@
-.alert.alert-primary.mx-auto.content.max-w-md-70ch{ role: 'alert', class: local_assigns[:class] }
+.alert.alert-primary.mx-auto.content.max-w-md-70ch{ role: 'alert', **local_assigns }
   = yield

app/views/bootstrap/_btn.haml

@@ -0,0 +1,13 @@
+-#
+  Un botón
+
+  @param :content [String] Contenido
+  @param :action [String] Acción de Stimulus
+  @param :target [String] Objetivo de Stimulus
+  @param [Hash] Atributos en bruto, con mayor prioridad que action y target
+:ruby
+  attributes = local_assigns.to_h.except(:content)
+  attributes[:data] ||= {}
+  attributes[:data][:action] ||= local_assigns[:action]
+  attributes[:data][:target] ||= local_assigns[:target]
+%button.btn.btn-secondary{ type: 'button', **attributes }= content

app/views/bootstrap/_card.haml

@@ -0,0 +1,8 @@
+.card{ **local_assigns.except(:image, :description) }
+  - if local_assigns[:image]
+    = image_tag url_for(local_assigns[:image]), alt: local_assigns[:description], class: 'img-fluid'
+
+  .card-body
+    .card-title= title
+
+    = yield

app/views/bootstrap/_custom_checkbox.haml

@@ -1,6 +1,10 @@
-- help_id = "#{id}_help"
+:ruby
+  help_id = "#{id}_help"
+  checkbox_attributes = local_assigns.slice(:id, :type, :name, :value, :required, :checked, :data, :disabled)
+  checkbox_attributes[:type] ||= 'checkbox'
 
-.custom-control.custom-checkbox
-  %input.custom-control-input{ id: id, type: 'checkbox', name: name, value: value, required: required }
+.custom-control{ class: "custom-#{checkbox_attributes[:type]}" }
+  %input.custom-control-input{ **checkbox_attributes }
   %label.custom-control-label{ for: id, aria: { describedby: help_id } }= content
-  %small.form-text.text-muted{ id: help_id }= yield
+  - if (block = yield).present?
+    %small.form-text.text-muted{ id: help_id }= block

app/views/bootstrap/_modal.haml

@@ -0,0 +1,44 @@
+-#
+  # Modal
+
+  @see {https://getbootstrap.com/docs/4.6/components/modal/}
+  @see {https://github.com/bullet-train-co/nice_partials/issues/99}
+  @param :id [String] El ID del modal
+  @param :modal_content_attributes [Hash] Atributos para el contenido del modal
+  @param :hide_actions [Array<String>] Acciones al ocultar el modal
+  @yield :ID_body Contenido
+  @yield :ID_header Contenido del header (opcional)
+  @yield :ID_footer Contenido del pie (opcional)
+  @example
+    = render 'bootstrap/modal', id: 'algo' do |partial|
+      - content_for :algo_header do
+        = 'título'
+      - content_for :algo_body do
+        = 'contenido'
+      - content_for :algo_footer do
+        = 'pie'
+
+:ruby
+  local_assigns[:hide_actions] ||= []
+  local_assigns[:hide_actions] << 'click->modal#hide'
+  local_assigns[:keydown_actions] ||= []
+  local_assigns[:keydown_actions] << 'keydown->modal#hideWithEscape'
+  local_assigns[:modal_content_attributes] ||= {}
+
+-# XXX: Necesario para poder generar todas las demás
+= yield
+
+.modal.fade{ tabindex: -1, aria: { hidden: 'true' }, data: { 'modal-target': 'modal', action: local_assigns[:keydown_actions].join(' ') } }
+  .modal-backdrop.fade{ data: { 'modal-target': 'backdrop', action: local_assigns[:hide_actions].join(' ') } }
+  .modal-dialog.modal-dialog-scrollable.modal-dialog-centered.modal-lg
+    .modal-content{ **local_assigns[:modal_content_attributes] }
+      - if (header = yield(:"#{id}_header")).present?
+        .modal-header= header
+
+      .modal-body= yield(:"#{id}_body")
+
+      .modal-footer.flex-nowrap
+        - if (footer = yield(:"#{id}_footer"))
+          = footer
+        - else
+          %button.btn.btn-secondary.m-0{ type: 'button', data: { action: 'modal#hide' } }= t('.close')

app/views/bootstrap/_responsive.haml

@@ -0,0 +1,4 @@
+- local_assigns[:ratio] ||= '1by1'
+
+.embed-responsive{ class: "embed-responsive-#{local_assigns[:ratio]}" }
+  .embed-responsive-item= yield

app/views/components/_dropdown.haml

@@ -18,7 +18,7 @@
       toggle: 'true',
       display: 'static',
       action: 'dropdown#toggle',
-      target: 'dropdown.button'
+      'dropdown-target': 'button'
     },
     aria: {
       expanded: 'false'
@@ -28,7 +28,7 @@
   .dropdown-menu{
     class: dropdown_classes,
     data: {
-      target: 'dropdown.dropdown'
+      'dropdown-target': 'dropdown'
     }
   }
     = yield

app/views/components/_dropdown_button.haml

@@ -3,4 +3,4 @@
   @param value [String]
   @param text [String]
 - local_assigns.delete(:text)
-%button.dropdown-item{type: 'submit', data: { target: 'dropdown.item' }, name: name, value: value, **local_assigns.compact }= text
+%button.dropdown-item{type: 'submit', data: { 'dropdown-target': 'item' }, name: name, value: value, **local_assigns.compact }= text

app/views/components/_dropdown_item.haml

@@ -2,4 +2,4 @@
   @param :text [String] Contenido del link
   @param :path [String,Hash] Link
 - local_assigns[:class] = "dropdown-item #{local_assigns[:class]}"
-= link_to text, path, class: local_assigns[:class], data: { target: 'dropdown.item' }
+= link_to text, path, class: local_assigns[:class], data: { 'dropdown-target': 'item' }

app/views/components/_select_all.haml

@@ -1,4 +1,4 @@
 -#
   @param id [String]
-= render 'components/checkbox', id: id, data: { action: 'select-all#toggle', target: 'select-all.toggle', **local_assigns.compact } do
+= render 'components/checkbox', id: id, data: { action: 'select-all#toggle', 'select-all-target': 'toggle', **local_assigns.compact } do
   %span.sr-only= t('.label')

app/views/devise/shared/_links.haml

@@ -1,6 +1,6 @@
 %hr/
 
-- locale = params.permit(:locale)
+- locale = { locale: (pluck_param(:locale, optional: true) || I18n.locale) }
 
 - if controller_name != 'sessions'
   = link_to t('.sign_in'), new_session_path(resource_name, params: locale),

app/views/moderation_queue/_account.haml

@@ -3,7 +3,7 @@
 
 .row.no-gutters.pt-2
   .col-1
-    = render 'components/checkbox', id: actor_moderation.id, form: form, name: 'actor_moderation[]', value: actor_moderation.id, data: { target: 'select-all.input' }
+    = render 'components/checkbox', id: actor_moderation.id, form: form, name: 'actor_moderation[]', value: actor_moderation.id, data: { 'select-all-target': 'input' }
   .col-11
     - cache [actor_moderation, profile] do
       %h4

app/views/moderation_queue/_comment.haml

@@ -22,7 +22,7 @@
 
 .row.no-gutters
   .col-1
-    = render 'components/checkbox', id: activity_pub.id, name: 'activity_pub[]', value: activity_pub.id, data: { target: 'select-all.input' }, form: form
+    = render 'components/checkbox', id: activity_pub.id, name: 'activity_pub[]', value: activity_pub.id, data: { 'select-all-target': 'input' }, form: form
   .col-11
     - cache [activity_pub, comment] do
       .d-flex.flex-row.align-items-center.justify-content-between

app/views/moderation_queue/_instance.haml

@@ -4,7 +4,7 @@
 
 .row.no-gutters.pt-2
   .col-1
-    = render 'components/checkbox', id: instance.hostname, form: form, name: 'instance_moderation[]', value: instance_moderation.id, data: { target: 'select-all.input' }
+    = render 'components/checkbox', id: instance.hostname, form: form, name: 'instance_moderation[]', value: instance_moderation.id, data: { 'select-all-target': 'input' }
   .col-11
     - cache [instance_moderation, instance] do
       %h4

app/views/posts/_attributes.haml

@@ -4,7 +4,8 @@
   @param post [Post]
   @param site [Site]
   @param dir [String]
-- post.attributes.each do |attribute|
+  @param except [Array<Symbol>]
+- (post.attributes - local_assigns[:except].to_a).each do |attribute|
   - metadata = post[attribute]
   - type = metadata.type
 

app/views/posts/_attributes_nested.haml

@@ -9,6 +9,7 @@
   - next if attribute == :date
   - next if attribute == :draft
   - next if attribute == inverse
+
   - metadata = post[attribute]
 
   - cache [post, metadata, I18n.locale] do

app/views/posts/_errors.haml

@@ -0,0 +1,19 @@
+- unless post.errors.empty?
+  - title = t('.errors.title')
+  - help = t('.errors.help')
+  = render 'bootstrap/alert' do
+    %h4= title
+    %p= help
+
+    %ul
+      - post.errors.each do |attribute, errors|
+        - if errors.size > 1
+          %li
+            %strong= post_label_t attribute, post: post
+            %ul
+              - errors.each do |error|
+                %li= error
+        - else
+          %li
+            %strong= post_label_t attribute, post: post
+            = errors.first

app/views/posts/_form.haml

@@ -1,22 +1,4 @@
-- unless post.errors.empty?
-  - title = t('.errors.title')
-  - help = t('.errors.help')
-  = render 'bootstrap/alert' do
-    %h4= title
-    %p= help
-
-    %ul
-      - post.errors.each do |attribute, errors|
-        - if errors.size > 1
-          %li
-            %strong= post_label_t attribute, post: post
-            %ul
-              - errors.each do |error|
-                %li= error
-        - else
-          %li
-            %strong= post_label_t attribute, post: post
-            = errors.first
+= render 'errors', post: post
 
 -# TODO: habilitar form_for
 :ruby
@@ -31,12 +13,19 @@
   end
 
 - dir = t("locales.#{@locale}.dir")
+- submitting_id = random_id
+- invalid_id = random_id
+- data = {}
+- data[:controller] = 'unsaved-changes form-validation'
+- data[:action] = 'unsaved-changes#submit form-validation#submit beforeunload@window->unsaved-changes#unsaved turbolinks:before-visit@window->unsaved-changes#unsavedTurbolinks'
+- data[:'unsaved-changes-confirm-value'] = t('.confirm')
+- data[:'form-validation-submitting-id-value'] = submitting_id
+- data[:'form-validation-invalid-id-value'] = invalid_id
 
 -# Comienza el formulario
-= form_tag url, method: method, class: 'form post ' + extra_class, multipart: true do
-
+= form_tag url, method: method, class: "form post #{extra_class}", multipart: true, data: data do
   -# Botones de guardado
-  = render 'posts/submit', site: site, post: post
+  = render 'posts/submit', site: site, post: post, invalid: invalid_id, submitting: submitting_id
 
   = hidden_field_tag 'post[layout]', post.layout.name
 
@@ -44,4 +33,15 @@
   = render 'posts/attributes', site: site, post: post, dir: dir, base: 'post', locale: @locale
 
   -# Botones de guardado
-  = render 'posts/submit', site: site, post: post
+  = render 'posts/submit', site: site, post: post, invalid: invalid_id, submitting: submitting_id
+
+-# Formularios usados por los modales
+= yield(:post_form)
+
+-#
+  Acumulador de formularios dinámicos, se van cargando a medida que se
+  necesitan en lugar de recursivamente.
+
+  Nunca se eliminan los modales una vez que se cargan para poder tener
+  historial de cambios.
+%div{ data: { controller: 'htmx', action: 'htmx:getUrl@window->htmx#beforeend' } }

app/views/posts/_htmx_form.haml

@@ -0,0 +1,81 @@
+-#
+  El formulario del artículo, con HTMX activado.
+
+  @param :site [Site]
+  @param :post [Post]
+  @param :locale [Symbol, String]
+  @param :dir [Symbol, String]
+
+  @param [ActionController::StrongParameters] params
+  @option params [String] :inverse La relación inversa (opcional)
+  @option params [String] :form El ID del formulario actual, si tiene botones externos, tiene que estar compartido
+  @option params [String] :swap Método de intercambio del resultado (HTMX)
+  @option params [String] :target Elemento donde se carga el resultado (HTMX)
+  @option params [String] :hide ID del modal a esconder vía evento
+  @option params [String] :show ID del modal a mostrar vía evento
+  @option params [String] :base La base del formulario, que luego se envía como parámetro a PostService
+  @option params [String] :attribute El tipo de atributo, para saber qué respuesta generar
+:ruby
+  except = %i[date]
+
+  if (inverse = pluck_param(:inverse, optional: true))
+    except << inverse.to_sym
+  end
+
+  options = {
+    id: pluck_param(:form),
+    multipart: true,
+    class: 'form post ',
+    'hx-swap': pluck_param(:swap),
+    'hx-target': "##{pluck_param(:target)}",
+    'hx-validate': true,
+    data: {
+      controller: 'unsaved-changes form-validation',
+      action: 'unsaved-changes#submit form-validation#submit beforeunload@window->unsaved-changes#unsaved turbolinks:before-visit@window->unsaved-changes#unsavedTurbolinks',
+      'form-validation-submitting-id-value': pluck_param(:submitting, optional: true),
+      'form-validation-invalid-id-value': pluck_param(:invalid, optional: true),
+    }
+  }
+
+  if post.new?
+    url = options[:'hx-post'] = site_posts_path(site, locale: locale)
+    options[:class] += 'new'
+  else
+    url = options[:'hx-patch'] = site_post_path(site, post.id, locale: locale)
+    options[:method] = :patch
+    options[:class] += 'edit'
+  end
+
+= form_tag url, **options do
+  = render 'errors', post: post
+
+  -# Parámetros para HTMX
+  %input{ type: 'hidden', name: 'modal_id', value: pluck_param(:modal_id, optional: true) }
+  %input{ type: 'hidden', name: 'hide', value: pluck_param((post.errors.empty? ? :show : :hide), optional: true) || pluck_param(:modal_id, optional: true) }
+  %input{ type: 'hidden', name: 'show', value: pluck_param((post.errors.empty? ? :hide : :show), optional: true) }
+  %input{ type: 'hidden', name: 'name', value: pluck_param(:name) }
+  %input{ type: 'hidden', name: 'base', value: pluck_param(:base) }
+  %input{ type: 'hidden', name: 'form', value: options[:id] }
+  %input{ type: 'hidden', name: 'dir', value: dir }
+  %input{ type: 'hidden', name: 'locale', value: locale }
+  %input{ type: 'hidden', name: 'attribute', value: pluck_param(:attribute) }
+  %input{ type: 'hidden', name: 'target', value: pluck_param(:target) }
+  %input{ type: 'hidden', name: 'swap', value: pluck_param(:swap) }
+  - if params[:inverse].present?
+    %input{ type: 'hidden', name: 'inverse', value: pluck_param(:inverse) }
+  - if params[:saved].present?
+    %input{ type: 'hidden', name: 'saved', value: pluck_param(:saved) }
+
+  = hidden_field_tag "#{base}[layout]", post.layout.name
+
+  -# Dibuja cada atributo, excepto algunos
+  = render 'posts/attributes', site: site, post: post, dir: dir, base: base, locale: locale, except: except
+
+  -#
+    Enviamos valores vacíos o arrastrados desde el formulario anterior
+    para los atributos ignorados
+  - except.each do |attr|
+    - if (value = pluck_param(attr, optional: true)).present?
+      %input{ type: 'hidden', name: "#{base}[#{attr}]", value: value }
+
+= yield(:post_form)

app/views/posts/_new_array_value.haml

@@ -0,0 +1 @@
+%li= value

app/views/posts/_new_has_one.haml

@@ -0,0 +1,2 @@
+= render 'posts/new_related_post', post: post, modal_id: modal_id
+%input{ type: 'hidden', name: name, value: value }

app/views/posts/_new_related_post.haml

@@ -0,0 +1,32 @@
+:ruby
+  image = nil
+  description = nil
+  card_id = random_id
+
+  if post.post.attribute?(:image) && (image = post.post.image.static_file)
+    description = post.post.image.value['description']
+  end
+
+.col.mb-3.p-1{ id: card_id, data: { controller: 'modal' } }
+  = render('bootstrap/card', image: image, description: description, title: post.title, class: 'h-100') do
+    - if post.post.attribute?(:description)
+      %p.card-text= post.post.description.value
+
+    -#
+      Si pasamos el ID del modal, asumimos que hay uno que ya existe y
+      lo llamamos.  Sino, tenemos que abrir el modal genérico y cargarle
+      el formulario vía "HTMX".
+
+    - if local_assigns[:modal_id].present?
+      = render 'bootstrap/btn', content: t('.edit'), data: { action: 'modal#showAnother', 'modal-show-value': local_assigns[:modal_id] }, id: random_id
+    - else
+      - form_params = {}
+      - form_params[:layout] = post.layout
+      - form_params[:uuid] = post.post_id
+      - form_params[:modal_id] = form_params[:show] = modal_id = random_id
+      -# Asociar un modal con una tarjeta
+      - form_params[:result_id] = card_id
+      - form_params[:inverse] = local_assigns[:inverse]
+
+      -# @todo Poder indicar en qué elemento queremos asociar lo descargado
+      = render 'bootstrap/btn', content: t('.edit'), data: { controller: 'htmx', action: 'modal#showAnother htmx#getUrlOnce', 'modal-show-value': modal_id, 'htmx-get-url-param': site_posts_modal_path(post.site, **form_params) }, id: random_id

app/views/posts/_required_checkbox.haml

@@ -0,0 +1,19 @@
+-#
+  Para el controlador required-checkbox necesitamos un checkbox oculto
+  que es obligatorio según si alguno de los checkboxes reales está
+  seleccionado o no.  Al ser obligatorio, va a tener feedback de
+  validación.  Sin embargo, como está oculto, no podemos mostrar el
+  mensaje de validación nativo del navegador.
+
+  @param :required [Boolean]
+  @param :name [String,Symbol]
+  @param :initial [Boolean]
+  @param :feedback [String]
+  @param :type [String]
+
+- if required
+  - local_assigns[:feedback] ||= t('.required')
+  - local_assigns[:type] ||= 'checkbox'
+
+  %input.form-control.d-none{ type: local_assigns[:type], name: name, data: { 'required-checkbox-target': 'required', action: 'invalid->required-checkbox#invalid' }, required: initial }
+  .invalid-feedback.mt-0= local_assigns[:feedback]

app/views/posts/_submit.haml

@@ -1,8 +1,3 @@
-- invalid_help = site.config.fetch('invalid_help', t('.invalid_help'))
-- sending_help = site.config.fetch('sending_help', t('.sending_help'))
-.form-group
-  = submit_tag t('.save'), class: 'btn btn-secondary submit-post'
-  = render 'bootstrap/alert', class: 'invalid-help d-none' do
-    = invalid_help
-  = render 'bootstrap/alert', class: 'sending-help d-none' do
-    = sending_help
+.d-flex.flex-column.flex-md-row.align-items-start.mb-3
+  %div= submit_tag t('.save'), class: 'btn btn-secondary submit-post'
+  = render 'posts/validation', site: site, submitting: { id: submitting }, invalid: { id: invalid }

app/views/posts/_validation.haml

@@ -0,0 +1,16 @@
+- invalid = site.config.fetch('invalid', t('.invalid'))
+- submitting = site.config.fetch('submitting', t('.submitting'))
+- %i[invalid submitting].each do |key|
+  - local_assigns[key] ||= {}
+  - local_assigns[key][:data] ||= {}
+  - local_assigns[key][:data][:target] ||= "form-validation.#{key}"
+  - local_assigns[key][:data][:action] ||= 'notification:show@window->notification#show'
+  - local_assigns[key][:data][:controller] ||= 'notification'
+  - local_assigns[key][:data][:'notification-hide-class'] ||= 'hide'
+  - local_assigns[key][:data][:'notification-show-class'] ||= 'show'
+
+.d-flex.flex-column
+  = render 'bootstrap/alert', class: 'm-0 d-none fade', **local_assigns[:invalid] do
+    = invalid
+  = render 'bootstrap/alert', class: 'm-0 d-none fade', **local_assigns[:submitting] do
+    = submitting

app/views/posts/attribute_ro/_new_array.haml

@@ -0,0 +1,8 @@
+%tr{ id: attribute }
+  %th= post_label_t(attribute, post: post)
+  %td
+    - if metadata.value.respond_to? :each
+      - metadata.value.each do |v|
+        %span.badge.badge-primary= v
+    - else
+      %span.badge.badge-primary{ lang: locale, dir: dir }= metadata.value

app/views/posts/attribute_ro/_new_belongs_to.haml

@@ -0,0 +1,6 @@
+%tr{ id: attribute }
+  %th= post_label_t(attribute, post: post)
+  %td{ dir: dir, lang: locale }
+    - p = metadata.belongs_to
+    - if p
+      = link_to p.title.value, site_post_path(site, p.id)

app/views/posts/attribute_ro/_new_has_and_belongs_to_many.haml

@@ -0,0 +1,6 @@
+%tr{ id: attribute }
+  %th= post_label_t(attribute, post: post)
+  %td
+    %ul{ dir: dir, lang: locale }
+      - metadata.has_many.each do |p|
+        %li= link_to p.title.value, site_post_path(site, p.id)

app/views/posts/attribute_ro/_new_has_many.haml

@@ -0,0 +1,6 @@
+%tr{ id: attribute }
+  %th= post_label_t(attribute, post: post)
+  %td
+    %ul{ dir: dir, lang: locale }
+      - metadata.has_many.each do |p|
+        %li= link_to p.title.value, site_post_path(site, p.id)

app/views/posts/attribute_ro/_new_has_one.haml

@@ -0,0 +1,6 @@
+%tr{ id: attribute }
+  %th= post_label_t(attribute, post: post)
+  %td{ dir: dir, lang: locale }
+    - p = metadata.has_one
+    - if p
+      = link_to p.title.value, site_post_path(site, p.id)

app/views/posts/attribute_ro/_new_predefined_array.haml

@@ -0,0 +1,5 @@
+%tr{ id: attribute }
+  %th= post_label_t(attribute, post: post)
+  %td
+    - metadata.value.each do |v|
+      %span.badge.badge-primary{ dir: dir, lang: locale }= metadata.values.key v

app/views/posts/attribute_ro/_new_predefined_value.haml

@@ -0,0 +1,3 @@
+%tr{ id: attribute }
+  %th= post_label_t(attribute, post: post)
+  %td{ dir: dir, lang: locale }= metadata.to_s

app/views/posts/attribute_ro/_predefined_value.haml

@@ -1,3 +1,3 @@
 %tr{ id: attribute }
   %th= post_label_t(attribute, post: post)
-  %td{ dir: dir, lang: locale }= metadata.value
+  %td{ dir: dir, lang: locale }= metadata.to_s

app/views/posts/attribute_ro/_title.haml

@@ -0,0 +1,3 @@
+%tr{ id: attribute }
+  %th= post_label_t(attribute, post: post)
+  %td{ dir: dir, lang: locale }= metadata.value

app/views/posts/attributes/_boolean.haml

@@ -1,5 +1,5 @@
 .form-check
-  = hidden_field_tag "#{base}[#{attribute}]", '0', id: ''
+  = hidden_field_tag "#{base}[#{attribute}]", '0', id: nil
   .custom-control.custom-switch
     = check_box_tag "#{base}[#{attribute}]", '1', metadata.value,
       class: "custom-control-input #{invalid(post, attribute)}",

app/views/posts/attributes/_file.haml

@@ -4,11 +4,11 @@
       - when %r{\Avideo/}
         = video_tag url_for(metadata.static_file),
           controls: true, class: 'img-fluid',
-          data: { target: 'file-preview.preview' }
+          data: { 'file-preview-target': 'preview' }
       - when %r{\Aaudio/}
         = audio_tag url_for(metadata.static_file),
           controls: true, class: 'img-fluid',
-          data: { target: 'file-preview.preview' }
+          data: { 'file-preview-target': 'preview' }
       - when 'application/pdf'
         %iframe{ src: url_for(metadata.static_file) }
       - else
@@ -26,7 +26,8 @@
     = file_field(*field_name_for(base, attribute, :path),
       **field_options(attribute, metadata, required: (metadata.required && !metadata.path?)),
       class: "custom-file-input #{invalid(post, attribute)}",
-      data: { target: 'file-preview.input', action: 'file-preview#update' })
+      lang: locale,
+      data: { 'file-preview-target': 'input', action: 'file-preview#update' })
     = label_tag "#{base}_#{attribute}_path",
       post_label_t(attribute, :path, post: post), class: 'custom-file-label'
     = render 'posts/attribute_feedback',

app/views/posts/attributes/_geo.haml

@@ -10,7 +10,7 @@
       = text_field(*field_name_for(base, attribute, :lat),
         value: metadata.value['lat'],
         **field_options(attribute, metadata),
-        data: { target: 'geo.lat' })
+        data: { 'geo-target': 'lat' })
       = render 'posts/attribute_feedback',
         post: post, attribute: [attribute, :lat], metadata: metadata
   .col
@@ -20,8 +20,8 @@
       = text_field(*field_name_for(base, attribute, :lng),
         value: metadata.value['lng'],
         **field_options(attribute, metadata),
-        data: { target: 'geo.lng' })
+        data: { 'geo-target': 'lng' })
       = render 'posts/attribute_feedback',
         post: post, attribute: [attribute, :lng], metadata: metadata
   .col-12.mb-3
-    %div{ data: { target: 'geo.map' }, style: 'height: 250px' }
+    %div{ data: { 'geo-target': 'map' }, style: 'height: 250px' }

app/views/posts/attributes/_image.haml

@@ -3,7 +3,7 @@
     = image_tag url_for(metadata.static_file),
       alt: metadata.value['description'],
       class: 'img-fluid',
-      data: { target: 'file-preview.preview' }
+      data: { 'file-preview-target': 'preview' }
 
     -# Mantener el valor si no enviamos ninguna imagen
     = hidden_field_tag "#{base}[#{attribute}][path]", metadata.value['path']
@@ -16,14 +16,15 @@
     = image_tag '',
       alt: metadata.value['description'],
       class: 'img-fluid',
-      data: { target: 'file-preview.preview' }
+      data: { 'file-preview-target': 'preview' }
 
   .custom-file
     = file_field(*field_name_for(base, attribute, :path),
       **field_options(attribute, metadata, required: (metadata.required && !metadata.path?)),
-      class: "custom-file-input #{invalid(post, attribute)}",
+      class: ['custom-file-input', invalid(post, attribute), ('replace-image' if metadata.static_file)].compact.join(' '),
       accept: ActiveStorage.web_image_content_types.join(','),
-      data: { target: 'file-preview.input', action: 'file-preview#update' })
+      lang: locale,
+      data: { 'file-preview-target': 'input', action: 'file-preview#update' })
     = label_tag "#{base}_#{attribute}_path",
       post_label_t(attribute, :path, post: post), class: 'custom-file-label'
     = render 'posts/attribute_feedback',

app/views/posts/attributes/_new_array.haml

@@ -0,0 +1,71 @@
+-#
+  Genera un listado de checkboxes entre los que se puede elegir para guardar
+:ruby
+  id = id_for(base, attribute)
+  name = "#{base}[#{attribute}][]"
+  form_id = random_id
+  controllers = %w[modal array enter]
+  controllers << 'required-checkbox' if metadata.required
+
+%div{ data: { controller: controllers.join(' '), 'array-original-value': metadata.value.to_json, 'array-new-array-value': site_posts_new_array_value_path(site) } }
+  %template{ data: { 'array-target': 'placeholder' } }
+    .col.mb-3{ 'aria-hidden': 'true' }
+      %span.placeholder.w-100
+
+  .form-group.mb-0
+    -#
+      Si la lista es obligatoria, al menos uno de los ítems tiene que
+      estar activado. Logramos esto con un checkbox oculto que se marca
+      como obligatorio al validar el formulario.
+    .d-flex.align-items-center.justify-content-between
+      %div
+        = label_tag id, post_label_t(attribute, post: post), class: 'mb-0 h3'
+        = render 'posts/required_checkbox', required: metadata.required, name: name, initial: metadata.empty?
+      = render 'bootstrap/btn', content: t('.edit'), action: 'modal#show'
+  -# Mostramos la lista de valores actuales.
+
+    Al aceptar el modal, se vacía el listado y se completa en base a
+    renderizaciones con HTMX. Para poder hacer eso, tenemos que poder
+    acceder a todos los items dentro del modal (como array.item) y
+    enviar el valor al endpoint que devuelve uno por uno. Esto lo
+    tenemos disponible en Stimulus, pero queremos usar HTMX o técnica
+    similar para poder renderizar del lado del servidor.
+
+    Para poder cancelar, mantenemos el estado original y desactivamos
+    o activamos los ítemes según estén incluidos en esa lista o no.
+  %ul.placeholder-glow{ data: { 'array-target': 'current' } }
+    - metadata.value.each do |value|
+      = render 'posts/new_array_value', value: value
+
+  = render 'bootstrap/modal', id: id, modal_content_attributes: { class: 'h-100' }, hide_actions: ['array#cancel'], keydown_actions: %w[keydown->array#cancelWithEscape] do
+    - content_for :"#{id}_header" do
+      .form-group.flex-grow-1.mb-0
+        = label_tag id, post_label_t(attribute, post: post), class: 'mb-0'
+        %small.feedback.form-text.text-muted.mt-0.mb-1= post_help_t(metadata.name, post: post)
+        %input.form-control{ data: { 'array-target': 'search', action: 'input->array#search keydown->enter#prevent' }, type: 'search', placeholder: t('.filter') }
+
+    - content_for :"#{id}_body" do
+      .form-group.mb-0{ id: "#{id}_body" }
+        -# Eliminamos las tildes para poder buscar independientemente de cómo se escriba.
+        - metadata.values.each do |value|
+          = render 'targets/array/item', value: value, class: 'mb-2' do
+            = render 'bootstrap/custom_checkbox', name: name, id: random_id, value: value, checked: metadata.value.include?(value), content: value, data: { action: 'required-checkbox#change', 'required-checkbox-target': 'checkbox' }
+
+    - content_for :"#{id}_footer" do
+      .input-group.w-auto.flex-grow-1.my-0
+        %input.form-control{ form: form_id, name: 'value', type: 'text', placeholder: t('.add_new'), required: true }
+        .input-group-append
+          = render 'bootstrap/btn', content: t('.add', layout: ''), form: form_id, type: 'submit', class: 'mb-0 mr-0'
+      = render 'bootstrap/btn', content: t('.accept'), action: 'array#accept modal#hide', class: 'm-0 mr-1'
+      = render 'bootstrap/btn', content: t('.cancel'), action: 'array#cancel modal#hide', class: 'm-0'
+
+    -# Los formularios para HTMX se colocan por fuera del formulario
+       principal, porque HTML5 no soporta formularios anidados. Los campos
+       quedan unidos al formulario por su atributo `id`.
+
+       Al enviar el formulario se obtiene una nueva opción con el valor
+       y se la agrega al final del listado.
+    - content_for :post_form do
+      %form{ id: form_id, 'hx-get': site_posts_new_array_path(site), 'hx-target': "##{id}_body", 'hx-swap': 'beforeend' }
+        %input{ type: 'hidden', name: 'name', value: name }
+        %input{ type: 'hidden', name: 'id', value: form_id }

app/views/posts/attributes/_new_belongs_to.haml

@@ -0,0 +1,111 @@
+-#
+  Genera un listado de radios entre los que se puede elegir solo uno para
+  guardar.  Podemos elegir entre los artículos ya cargados o agregar uno
+  nuevo.
+
+  Al agregar uno nuevo, se abre un segundo modal que carga el formulario
+  correspondiente vía HTMX. El formulario tiene que cargarse por fuera
+  del formulario principal porque no se pueden anidar.
+
+:ruby
+  id = random_id
+  name = "#{base}[#{attribute}]"
+  form_id = random_id
+  modal_id = random_id
+  post_id = random_id
+  post_form_id = random_id
+  post_modal_id = random_id
+  post_form_loaded_id = random_id
+  value_list_id = random_id
+  controllers = %w[modal array]
+  controllers << 'required-checkbox' if metadata.required
+
+%div{ id: modal_id, data: { controller: controllers.join(' '), 'array-original-value': metadata.value.to_json, 'array-new-array-value': site_posts_new_related_post_path(site) } }
+  %template{ data: { 'array-target': 'placeholder' } }
+    .col.p-3{ 'aria-hidden': 'true' }
+      %span.placeholder.w-100
+
+  .form-group
+    .d-flex.align-items-center.justify-content-between
+      %div
+        = label_tag id, post_label_t(attribute, post: post), class: 'mb-0'
+        = render 'posts/required_checkbox', required: metadata.required, name: name, initial: metadata.empty?, type: 'radio'
+      = render 'bootstrap/btn', content: t('.edit'), action: 'modal#show'
+
+  -# Mostramos la lista de valores actuales.
+
+    Al aceptar el modal, se vacía el listado y se completa en base a
+    renderizaciones con HTMX. Para poder hacer eso, tenemos que poder
+    acceder a todos los items dentro del modal (como array.item) y
+    enviar el valor al endpoint que devuelve uno por uno. Esto lo
+    tenemos disponible en Stimulus, pero queremos usar HTMX o técnica
+    similar para poder renderizar del lado del servidor.
+
+    Para poder cancelar, mantenemos el estado original y desactivamos
+    o activamos los ítemes según estén incluidos en esa lista o no.
+  .row.no-gutters.placeholder-glow{ data: { 'array-target': 'current' } }
+    -# @todo issue-7537
+    - if !metadata.empty? && (indexed_post = site.indexed_posts.find_by(post_id: metadata.value))
+      = render 'posts/new_related_post', post: indexed_post, attribute: metadata.type, inverse: metadata.inverse
+
+  = render 'bootstrap/modal', id: id, modal_content_attributes: { class: 'h-100' }, hide_actions: ['array#cancel'], keydown_actions: %w[keydown->array#cancelWithEscape] do
+    - content_for :"#{id}_header" do
+      .form-group.flex-grow-1.mb-0
+        = label_tag id, post_label_t(attribute, post: post)
+        %input.form-control{ data: { 'array-target': 'search', action: 'input->array#search' }, type: 'search', placeholder: t('.filter') }
+
+    - content_for :"#{id}_body" do
+      .form-group.mb-0{ id: value_list_id }
+        - metadata.values.each do |(value, uuid, disabled)|
+          = render 'targets/array/item', value: uuid, 'send-value': uuid, 'human-value': value, class: 'mb-2' do
+            = render 'bootstrap/custom_checkbox', name: name, id: random_id, value: uuid, checked: metadata.value.include?(uuid), content: value, type: 'radio', disabled: disabled do
+              = t('posts.attributes.new_belongs_to.disabled') if disabled
+
+    -#
+      Según la definición del campo, si hay un filtro, tenemos que poder
+      elegir qué tipo de esquema queremos o si hay uno solo, siempre
+      vamos a enviar ese. Si no hay ninguno, tendríamos que poder elegir
+      entre todos los esquemas.
+
+    - content_for :"#{id}_footer" do
+      - layout = metadata.filter[:layout]
+      - if layout.is_a?(String)
+        %input{ type: 'hidden', name: 'layout', value: layout, form: post_form_id }
+        = render 'bootstrap/btn', content: t('.add', layout: site.layouts[layout].humanized_name), form: post_form_id, type: 'submit', class: 'm-0 mr-1'
+      - else
+        - layouts   = layout&.map { |x| site.layouts[x] }
+        - layouts ||= site.layouts.values
+        .input-group.w-auto.flex-grow-1.my-0
+          %select.form-control{ form: post_form_id, name: 'layout' }
+            - layouts.each do |layout|
+              %option{ value: layout.name }= layout.humanized_name
+          .input-group-append
+            = render 'bootstrap/btn', content: t('.add', layout: ''), form: post_form_id, type: 'submit', class: 'mb-0 mr-0'
+      = render 'bootstrap/btn', content: t('.accept'), action: 'array#accept modal#hide', class: 'm-0 mr-1'
+      = render 'bootstrap/btn', content: t('.cancel'), action: 'array#cancel modal#hide', class: 'm-0'
+
+-#
+  Este segundo modal es el que carga los formularios de
+  creación/modificación de artículos relacionados. Se envía a post_form
+  para que sea externo al formulario actual.
+- content_for :post_form do
+  %form{ id: post_form_id, 'hx-get': site_posts_form_path(site), 'hx-target': "##{post_form_loaded_id}" }
+    %input{ type: 'hidden', name: 'show', value: post_modal_id }
+    %input{ type: 'hidden', name: 'hide', value: modal_id }
+    %input{ type: 'hidden', name: 'target', value: value_list_id }
+    %input{ type: 'hidden', name: 'swap', value: 'beforeend' }
+    %input{ type: 'hidden', name: 'base', value: id }
+    %input{ type: 'hidden', name: 'name', value: name }
+    %input{ type: 'hidden', name: 'form', value: form_id }
+    %input{ type: 'hidden', name: 'attribute', value: metadata.type }
+    - if metadata.inverse?
+      %input{ type: 'hidden', name: 'inverse', value: metadata.inverse }
+      %input{ type: 'hidden', name: metadata.inverse, value: post.uuid.value }
+  %div{ id: post_modal_id, data: { controller: 'modal' } }
+    = render 'bootstrap/modal', id: post_id, modal_content_attributes: { class: 'h-100' } do
+      - content_for :"#{post_id}_body" do
+        %div{ id: post_form_loaded_id }
+      - content_for :"#{post_id}_footer" do
+        = render 'bootstrap/btn', form: form_id, content: t('.save'), type: 'submit'
+        -# @todo: Volver al otro modal
+        = render 'bootstrap/btn', content: t('.cancel'), action: 'modal#hide'

app/views/posts/attributes/_new_content.haml

@@ -3,7 +3,7 @@
   = render 'posts/attribute_feedback',
     post: post, attribute: attribute, metadata: metadata
 
-  .new-editor.content{ id: attribute }
+  .new-editor.content{ id: attribute, data: { controller: 'new-editor' } }
     = text_area_tag "#{base}[#{attribute}]", metadata.to_s.html_safe,
-      dir: dir, lang: locale,
+      dir: dir, lang: locale, 'data-new-editor-target': 'textarea',
       **field_options(attribute, metadata), class: 'd-none'

app/views/posts/attributes/_new_has_and_belongs_to_many.haml

@@ -0,0 +1,113 @@
+-#
+  Genera un listado de checkboxes entre los que se puede elegir para
+  guardar.  Podemos elegir entre los artículos ya cargados o agregar uno
+  nuevo.
+
+  Al agregar uno nuevo, se abre un segundo modal que carga el formulario
+  correspondiente vía HTMX. El formulario tiene que cargarse por fuera
+  del formulario principal porque no se pueden anidar.
+
+:ruby
+  id = random_id
+  name = "#{base}[#{attribute}][]"
+  form_id = random_id
+  modal_id = random_id
+  post_id = random_id
+  post_form_id = random_id
+  post_modal_id = random_id
+  post_form_loaded_id = random_id
+  value_list_id = random_id
+  controllers = %w[modal array]
+  controllers << 'required-checkbox' if metadata.required
+
+%div{ id: modal_id, data: { controller: controllers.join(' '), 'array-original-value': metadata.value.to_json, 'array-new-array-value': site_posts_new_related_post_path(site, inverse: metadata.inverse) } }
+  %template{ data: { 'array-target': 'placeholder' } }
+    .col.p-3{ 'aria-hidden': 'true' }
+      %span.placeholder.w-100
+
+  .form-group
+    = hidden_field_tag name, ''
+    .d-flex.align-items-center.justify-content-between
+      %div
+        = label_tag id, post_label_t(attribute, post: post), class: 'h3'
+        = render 'posts/required_checkbox', required: metadata.required, name: name, initial: metadata.empty?
+      = render 'bootstrap/btn', content: t('.edit'), action: 'modal#show'
+
+  -# Mostramos la lista de valores actuales.
+
+    Al aceptar el modal, se vacía el listado y se completa en base a
+    renderizaciones con HTMX. Para poder hacer eso, tenemos que poder
+    acceder a todos los items dentro del modal (como array.item) y
+    enviar el valor al endpoint que devuelve uno por uno. Esto lo
+    tenemos disponible en Stimulus, pero queremos usar HTMX o técnica
+    similar para poder renderizar del lado del servidor.
+
+    Para poder cancelar, mantenemos el estado original y desactivamos
+    o activamos los ítemes según estén incluidos en esa lista o no.
+  .row.no-gutters.placeholder-glow{ data: { 'array-target': 'current' } }
+    -# @todo issue-7537
+    - metadata.value.each do |uuid|
+      - if (indexed_post = site.indexed_posts.find_by(post_id: uuid))
+        = render 'posts/new_related_post', post: indexed_post, attribute: metadata.type, inverse: metadata.inverse
+
+  = render 'bootstrap/modal', id: id, modal_content_attributes: { class: 'h-100' }, hide_actions: ['array#cancel'], keydown_actions: %w[keydown->array#cancelWithEscape] do
+    - content_for :"#{id}_header" do
+      .form-group.flex-grow-1.mb-0
+        = label_tag id, post_label_t(attribute, post: post)
+        %input.form-control{ data: { 'array-target': 'search', action: 'input->array#search' }, type: 'search', placeholder: t('.filter') }
+
+    - content_for :"#{id}_body" do
+      .form-group.mb-0{ id: value_list_id }
+        - metadata.values.each_pair do |value, uuid|
+          = render 'targets/array/item', value: uuid, 'send-value': uuid, 'human-value': value, class: 'mb-2' do
+            = render 'bootstrap/custom_checkbox', name: name, id: random_id, value: uuid, checked: metadata.value.include?(uuid), content: value, data: { action: 'required-checkbox#change', 'required-checkbox-target': 'checkbox' }
+
+    -#
+      Según la definición del campo, si hay un filtro, tenemos que poder
+      elegir qué tipo de esquema queremos o si hay uno solo, siempre
+      vamos a enviar ese. Si no hay ninguno, tendríamos que poder elegir
+      entre todos los esquemas.
+
+    - content_for :"#{id}_footer" do
+      - layout = metadata.filter[:layout]
+      - if layout.is_a?(String)
+        %input{ type: 'hidden', name: 'layout', value: layout, form: post_form_id }
+        = render 'bootstrap/btn', content: t('.add', layout: site.layouts[layout].humanized_name), form: post_form_id, type: 'submit', class: 'm-0 mr-1'
+      - else
+        - layouts   = layout&.map { |x| site.layouts[x] }
+        - layouts ||= site.layouts.values
+        .input-group.w-auto.flex-grow-1.my-0
+          %select.form-control{ form: post_form_id, name: 'layout' }
+            - layouts.each do |layout|
+              %option{ value: layout.name }= layout.humanized_name
+          .input-group-append
+            = render 'bootstrap/btn', content: t('.add', layout: ''), form: post_form_id, type: 'submit', class: 'mb-0 mr-0'
+      = render 'bootstrap/btn', content: t('.accept'), action: 'array#accept modal#hide', class: 'm-0 mr-1'
+      = render 'bootstrap/btn', content: t('.cancel'), action: 'array#cancel modal#hide', class: 'm-0'
+
+-#
+  Este segundo modal es el que carga los formularios de
+  creación/modificación de artículos relacionados. Se envía a post_form
+  para que sea externo al formulario actual.
+- content_for :post_form do
+  %form{ id: post_form_id, 'hx-get': site_posts_form_path(site), 'hx-target': "##{post_form_loaded_id}" }
+    %input{ type: 'hidden', name: 'modal_id', value: modal_id }
+    %input{ type: 'hidden', name: 'show', value: post_modal_id }
+    %input{ type: 'hidden', name: 'hide', value: modal_id }
+    %input{ type: 'hidden', name: 'target', value: value_list_id }
+    %input{ type: 'hidden', name: 'swap', value: 'beforeend' }
+    %input{ type: 'hidden', name: 'base', value: id }
+    %input{ type: 'hidden', name: 'name', value: name }
+    %input{ type: 'hidden', name: 'form', value: form_id }
+    %input{ type: 'hidden', name: 'attribute', value: metadata.type }
+    - if metadata.inverse?
+      %input{ type: 'hidden', name: 'inverse', value: metadata.inverse }
+      %input{ type: 'hidden', name: metadata.inverse, value: post.uuid.value }
+  %div{ id: post_modal_id, data: { controller: 'modal' } }
+    = render 'bootstrap/modal', id: post_id, modal_content_attributes: { class: 'h-100' } do
+      - content_for :"#{post_id}_body" do
+        %div{ id: post_form_loaded_id }
+      - content_for :"#{post_id}_footer" do
+        = render 'bootstrap/btn', form: form_id, content: t('.save'), type: 'submit'
+        -# @todo: Volver al otro modal
+        = render 'bootstrap/btn', content: t('.cancel'), action: 'modal#hide'

app/views/posts/attributes/_new_has_many.haml

@@ -0,0 +1,113 @@
+-#
+  Genera un listado de checkboxes entre los que se puede elegir para
+  guardar.  Podemos elegir entre los artículos ya cargados o agregar uno
+  nuevo.
+
+  Al agregar uno nuevo, se abre un segundo modal que carga el formulario
+  correspondiente vía HTMX. El formulario tiene que cargarse por fuera
+  del formulario principal porque no se pueden anidar.
+
+:ruby
+  id = id_for(base, attribute)
+  name = "#{base}[#{attribute}][]"
+  form_id = random_id
+  modal_id = random_id
+  post_id = random_id
+  post_form_id = random_id
+  post_modal_id = random_id
+  post_form_loaded_id = random_id
+  value_list_id = random_id
+  controllers = %w[modal array]
+  controllers << 'required-checkbox' if metadata.required
+
+%div{ id: modal_id, data: { controller: controllers.join(' '), 'array-original-value': metadata.value.to_json, 'array-new-array-value': site_posts_new_related_post_path(site) } }
+  %template{ data: { 'array-target': 'placeholder' } }
+    .col.p-3{ 'aria-hidden': 'true' }
+      %span.placeholder.w-100
+
+  .form-group
+    .d-flex.align-items-center.justify-content-between
+      %div
+        = label_tag id, post_label_t(attribute, post: post), class: 'h3'
+        = render 'posts/required_checkbox', required: metadata.required, name: name, initial: metadata.empty?
+      = render 'bootstrap/btn', content: t('.edit'), action: 'modal#show'
+
+  -# Mostramos la lista de valores actuales.
+
+    Al aceptar el modal, se vacía el listado y se completa en base a
+    renderizaciones con HTMX. Para poder hacer eso, tenemos que poder
+    acceder a todos los items dentro del modal (como array.item) y
+    enviar el valor al endpoint que devuelve uno por uno. Esto lo
+    tenemos disponible en Stimulus, pero queremos usar HTMX o técnica
+    similar para poder renderizar del lado del servidor.
+
+    Para poder cancelar, mantenemos el estado original y desactivamos
+    o activamos los ítemes según estén incluidos en esa lista o no.
+  .row.no-gutters.placeholder-glow{ data: { 'array-target': 'current' } }
+    -# @todo issue-7537
+    - metadata.value.each do |uuid|
+      - if (indexed_post = site.indexed_posts.find_by(post_id: uuid))
+        = render 'posts/new_related_post', post: indexed_post, attribute: metadata.type, inverse: metadata.inverse
+
+  = render 'bootstrap/modal', id: id, modal_content_attributes: { class: 'h-100' }, hide_actions: ['array#cancel'], keydown_actions: %w[keydown->array#cancelWithEscape] do
+    - content_for :"#{id}_header" do
+      .form-group.flex-grow-1.mb-0
+        = label_tag id, post_label_t(attribute, post: post)
+        %input.form-control{ data: { 'array-target': 'search', action: 'input->array#search' }, type: 'search', placeholder: t('.filter') }
+
+    - content_for :"#{id}_body" do
+      .form-group.mb-0{ id: value_list_id }
+        - metadata.values.each do |(value, uuid, disabled)|
+          = render 'targets/array/item', value: uuid, 'send-value': uuid, 'human-value': value, class: 'mb-2' do
+            = render 'bootstrap/custom_checkbox', name: name, id: random_id, value: uuid, checked: metadata.value.include?(uuid), content: value, data: { action: 'required-checkbox#change', 'required-checkbox-target': 'checkbox' }, disabled: disabled do
+              = t('posts.attributes.new_has_many.disabled') if disabled
+
+    -#
+      Según la definición del campo, si hay un filtro, tenemos que poder
+      elegir qué tipo de esquema queremos o si hay uno solo, siempre
+      vamos a enviar ese. Si no hay ninguno, tendríamos que poder elegir
+      entre todos los esquemas.
+
+    - content_for :"#{id}_footer" do
+      - layout = metadata.filter[:layout]
+      - if layout.is_a?(String)
+        %input{ type: 'hidden', name: 'layout', value: layout, form: post_form_id }
+        = render 'bootstrap/btn', content: t('.add', layout: site.layouts[layout].humanized_name), form: post_form_id, type: 'submit', class: 'm-0 mr-1'
+      - else
+        - layouts   = layout&.map { |x| site.layouts[x] }
+        - layouts ||= site.layouts.values
+        .input-group.w-auto.flex-grow-1.my-0
+          %select.form-control{ form: post_form_id, name: 'layout' }
+            - layouts.each do |layout|
+              %option{ value: layout.name }= layout.humanized_name
+          .input-group-append
+            = render 'bootstrap/btn', content: t('.add', layout: ''), form: post_form_id, type: 'submit', class: 'mb-0 mr-0'
+      = render 'bootstrap/btn', content: t('.accept'), action: 'array#accept modal#hide', class: 'm-0 mr-1'
+      = render 'bootstrap/btn', content: t('.cancel'), action: 'array#cancel modal#hide', class: 'm-0'
+
+-#
+  Este segundo modal es el que carga los formularios de
+  creación/modificación de artículos relacionados. Se envía a post_form
+  para que sea externo al formulario actual.
+- content_for :post_form do
+  %form{ id: post_form_id, 'hx-get': site_posts_form_path(site), 'hx-target': "##{post_form_loaded_id}" }
+    %input{ type: 'hidden', name: 'show', value: post_modal_id }
+    %input{ type: 'hidden', name: 'hide', value: modal_id }
+    %input{ type: 'hidden', name: 'target', value: value_list_id }
+    %input{ type: 'hidden', name: 'swap', value: 'beforeend' }
+    %input{ type: 'hidden', name: 'base', value: id }
+    %input{ type: 'hidden', name: 'name', value: name }
+    %input{ type: 'hidden', name: 'form', value: form_id }
+    %input{ type: 'hidden', name: 'attribute', value: metadata.type }
+    -# @todo Forma genérica de arrastrar valores desde un formulario al siguiente
+    - if metadata.inverse?
+      %input{ type: 'hidden', name: 'inverse', value: metadata.inverse }
+      %input{ type: 'hidden', name: metadata.inverse, value: post.uuid.value }
+  %div{ id: post_modal_id, data: { controller: 'modal' } }
+    = render 'bootstrap/modal', id: post_id, modal_content_attributes: { class: 'h-100' } do
+      - content_for :"#{post_id}_body" do
+        %div{ id: post_form_loaded_id }
+      - content_for :"#{post_id}_footer" do
+        = render 'bootstrap/btn', form: form_id, content: t('.save'), type: 'submit'
+        -# @todo: Volver al otro modal
+        = render 'bootstrap/btn', content: t('.cancel'), action: 'modal#hide'