diff --git a/Gemfile.lock b/Gemfile.lock
index 9d611326..660119e3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -226,7 +226,7 @@ GEM
     net-ssh (5.2.0)
     netaddr (2.0.3)
     nio4r (2.3.1)
-    nokogiri (1.10.3)
+    nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
     parallel (1.17.0)
diff --git a/app/assets/javascripts/markdown.js b/app/assets/javascripts/markdown.js
deleted file mode 100644
index 2927b9fd..00000000
--- a/app/assets/javascripts/markdown.js
+++ /dev/null
@@ -1,4 +0,0 @@
-$(document).on('turbolinks:load', function() {
-  var md = window.markdownit();
-  $('#post_content').markdown({ parser: md.render.bind(md) });
-});
diff --git a/app/assets/javascripts/validation.js b/app/assets/javascripts/validation.js
index b0769adf..999bf2f0 100644
--- a/app/assets/javascripts/validation.js
+++ b/app/assets/javascripts/validation.js
@@ -1,4 +1,5 @@
 $(document).on('turbolinks:load', function() {
+  // Previene el envío del formulario al presionar <Enter>
   $(document).on('keypress', '.post :input:not(textarea):not([type=submit])', function(e) {
     if (e.keyCode == 13) {
       e.preventDefault();
@@ -6,6 +7,7 @@ $(document).on('turbolinks:load', function() {
     }
   });
 
+  // Al enviar el formulario del artículo, aplicar la validación
   $('.submit-post').click(function(e) {
     var form = $(this).parents('form.form');
     var invalid_help = $('.invalid_help');
@@ -13,11 +15,22 @@ $(document).on('turbolinks:load', function() {
 
     invalid_help.addClass('d-none');
     sending_help.addClass('d-none');
+    form.find('[aria-invalid="true"]')
+      .attr('aria-invalid', false)
+      .attr('aria-describedby', function() {
+        return $(this).siblings('.feedback').attr('id');
+      });
 
     if (form[0].checkValidity() === false) {
       e.preventDefault();
       e.stopPropagation();
       invalid_help.removeClass('d-none');
+
+      form.find(':invalid')
+        .attr('aria-invalid', true)
+        .attr('aria-describedby', function() {
+          return $(this).siblings('.invalid-feedback').attr('id');
+        });
     } else {
       sending_help.removeClass('d-none');
     }
diff --git a/app/assets/stylesheets/application.scss b/app/assets/stylesheets/application.scss
index e4119a92..9e29ead4 100644
--- a/app/assets/stylesheets/application.scss
+++ b/app/assets/stylesheets/application.scss
@@ -1,3 +1,9 @@
+// TODO: Encontrar la forma de generar esto desde los locales de Rails
+$custom-file-text: (
+  en: 'Browse',
+  es: 'Buscar archivo'
+);
+
 @import "bootstrap";
 @import "bootstrap-markdown/css/bootstrap-markdown.min";
 @import "font-awesome";
diff --git a/app/controllers/posts_controller.rb b/app/controllers/posts_controller.rb
index 1e5dd49e..d4ea3f9b 100644
--- a/app/controllers/posts_controller.rb
+++ b/app/controllers/posts_controller.rb
@@ -7,11 +7,12 @@ class PostsController < ApplicationController
 
   def index
     authorize Post
-    @site     = find_site
-    @lang     = find_lang(@site)
+    @site = find_site
+    # TODO: por qué no lo está leyendo @site.posts?
+    @site.read
     @category = session[:category] = params.dig(:category)
-    @posts    = policy_scope(@site.posts_for(@lang),
-                             policy_scope_class: PostPolicy::Scope)
+    # TODO: Aplicar policy_scope
+    @posts    = @site.posts(lang: I18n.locale)
 
     if params[:sort_by].present?
       begin
@@ -33,12 +34,8 @@ class PostsController < ApplicationController
   def new
     authorize Post
     @site = find_site
-    @lang = find_lang(@site)
-    @template = find_template(@site)
-    @post = Post.new(site: @site,
-                     front_matter: { date: Time.now },
-                     lang: @lang,
-                     template: @template)
+    # TODO: Implementar layout
+    @post = @site.posts.build(lang: I18n.locale)
   end
 
   def create
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 8be0d41e..db667923 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -2,26 +2,23 @@
 
 # Helpers
 module ApplicationHelper
-  # Devuelve el atributo name de un campo posiblemente anidado
-  def field_name_for_post(names)
-    return ['post', names] if names.is_a? String
-
-    names = names.dup
-    root = 'post'
+  # Devuelve el atributo name de un campo anidado en el formato que
+  # esperan los helpers *_field
+  #
+  # [ 'post', :image, :description ]
+  # [ 'post[image]', :description ]
+  # 'post[image][description]'
+  def field_name_for(*names)
     name = names.pop
+    root = names.shift
+
     names.each do |n|
-      root = "#{root}[#{n}]"
+      root += "[#{n}]"
     end
 
     [root, name]
   end
 
-  def field_name_for_post_as_string(names)
-    f = field_name_for_post(names)
-
-    "#{f.first}[#{f.last}]"
-  end
-
   def distance_of_time_in_words_if_more_than_a_minute(seconds)
     if seconds > 60
       distance_of_time_in_words seconds
@@ -49,4 +46,53 @@ module ApplicationHelper
   def form_class(model)
     model.errors.messages.empty? ? 'needs-validation' : 'was-validated'
   end
+
+  # Opciones por defecto para el campo de un formulario
+  def field_options(attribute, metadata)
+    {
+      class: 'form-control',
+      required: metadata.required,
+      aria: {
+        describedby: id_for_help(attribute),
+        required: metadata.required
+      }
+    }
+  end
+
+  # Devuelve la clase is-invalid si el campo tiene un error
+  def invalid(post, attribute)
+    'is-invalid' if post.errors[attribute].present?
+  end
+
+  # Busca la traducción de una etiqueta en los metadatos de un post
+  def post_label_t(*attribute, post:)
+    label = post_t(*attribute, post: post, type: :label)
+
+    if post.send(attribute.first).required
+      label += I18n.t('posts.attributes.required.label')
+    end
+
+    label
+  end
+
+  def post_help_t(*attribute, post:)
+    post_t(*attribute, post: post, type: :help)
+  end
+
+  def id_for_help(*attribute)
+    "#{attribute.join('-')}-help"
+  end
+
+  def id_for_feedback(*attribute)
+    "#{attribute.join('-')}-feedback"
+  end
+
+  private
+
+  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}")
+  end
 end
diff --git a/app/models/metadata_content.rb b/app/models/metadata_content.rb
new file mode 100644
index 00000000..ec5284ba
--- /dev/null
+++ b/app/models/metadata_content.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+# Se encarga del contenido del artículo y quizás otros campos que
+# requieran texto largo.
+class MetadataContent < MetadataTemplate
+  include ActionView::Helpers::SanitizeHelper
+
+  def default_value
+    ''
+  end
+
+  def value
+    sanitize(self[:value] || document.content || default_value,
+             sanitize_options)
+  end
+
+  private
+
+  # Etiquetas y atributos HTML a permitir
+  #
+  # No queremos permitir mucho más que cosas de las que nos falten en
+  # CommonMark.
+  #
+  # TODO: Permitir una lista de atributos y etiquetas en el Layout
+  #
+  # XXX: Vamos a generar un reproductor de video/audio directamente
+  # desde un plugin de Jekyll
+  def sanitize_options
+    {
+      tags: %w[span],
+      attributes: %w[title class lang]
+    }
+  end
+end
diff --git a/app/models/metadata_date.rb b/app/models/metadata_date.rb
index 2c4741f3..ea0bad50 100644
--- a/app/models/metadata_date.rb
+++ b/app/models/metadata_date.rb
@@ -1,3 +1,4 @@
-class MetadataDate < MetadataTemplate
+# frozen_string_literal: true
 
+class MetadataDate < MetadataTemplate
 end
diff --git a/app/models/metadata_image.rb b/app/models/metadata_image.rb
index 817914d2..c0bbebd5 100644
--- a/app/models/metadata_image.rb
+++ b/app/models/metadata_image.rb
@@ -4,7 +4,7 @@
 class MetadataImage < MetadataTemplate
   # Una ruta vacía a la imagen con una descripción vacía
   def default_value
-    { path: '', description: '' }
+    { 'path' => '', 'description' => '' }
   end
 
   def empty?
diff --git a/app/models/metadata_path.rb b/app/models/metadata_path.rb
index efb7baf6..b3f3b1a5 100644
--- a/app/models/metadata_path.rb
+++ b/app/models/metadata_path.rb
@@ -17,6 +17,10 @@ class MetadataPath < MetadataTemplate
     Pathname.new(value).relative_path_from(Pathname.new(site.path)).to_s
   end
 
+  def basename
+    File.basename(value, ext)
+  end
+
   private
 
   def ext
diff --git a/app/models/metadata_string.rb b/app/models/metadata_string.rb
index 4cc2ff1f..8d39d5d4 100644
--- a/app/models/metadata_string.rb
+++ b/app/models/metadata_string.rb
@@ -6,4 +6,8 @@ class MetadataString < MetadataTemplate
   def default_value
     ''
   end
+
+  def value
+    super.strip
+  end
 end
diff --git a/app/models/post.rb b/app/models/post.rb
index 86a0d052..de506879 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -10,10 +10,10 @@ require 'jekyll/utils'
 # rubocop:disable Style/MissingRespondToMissing
 class Post < OpenStruct
   # Atributos por defecto
-  # XXX: Volver document opcional cuando estemos creando
   DEFAULT_ATTRIBUTES = %i[site document layout].freeze
   # Otros atributos que no vienen en los metadatos
-  ATTRIBUTES = %i[content lang path date slug attributes errors].freeze
+  PRIVATE_ATTRIBUTES = %i[lang path slug attributes errors].freeze
+  PUBLIC_ATTRIBUTES = %i[date].freeze
 
   # Redefinir el inicializador de OpenStruct
   #
@@ -27,15 +27,8 @@ class Post < OpenStruct
     super(args)
 
     # Genera un método con todos los atributos disponibles
-    self.attributes = DEFAULT_ATTRIBUTES +
-                      ATTRIBUTES +
-                      layout.metadata.keys.map(&:to_sym)
-
-    # El contenido
-    # TODO: Mover a su propia clase para poder hacer limpiezas
-    # independientemente
-    self.content = document.content
-    self.errors  = {}
+    self.attributes = layout.metadata.keys.map(&:to_sym) + PUBLIC_ATTRIBUTES
+    self.errors = {}
 
     # Genera un atributo por cada uno de los campos de la plantilla,
     # MetadataFactory devuelve un tipo de campo por cada campo.  A
@@ -63,6 +56,10 @@ class Post < OpenStruct
   end
   # rubocop:enable Metrics/AbcSize
 
+  def id
+    path.basename
+  end
+
   # Levanta un error si al construir el artículo no pasamos un atributo.
   def default_attributes_missing(**args)
     DEFAULT_ATTRIBUTES.each do |attr|
@@ -100,10 +97,11 @@ class Post < OpenStruct
   # Detecta si es un atributo válido o no, a partir de la tabla de la
   # plantilla
   def attribute?(mid)
+    attrs = DEFAULT_ATTRIBUTES + PRIVATE_ATTRIBUTES + PUBLIC_ATTRIBUTES
     if singleton_class.method_defined? :attributes
-      attributes.include? attribute_name(mid)
+      (attrs + attributes).include? attribute_name(mid)
     else
-      (DEFAULT_ATTRIBUTES + ATTRIBUTES).include? attribute_name(mid)
+      attrs.include? attribute_name(mid)
     end
   end
 
@@ -119,7 +117,7 @@ class Post < OpenStruct
     # Asegurarse que haya un layout
     yaml['layout'] = layout.name.to_s
 
-    "#{yaml.to_yaml}---\n\n#{content}"
+    "#{yaml.to_yaml}---\n\n#{content.value}"
   end
 
   # Eliminar el artículo del repositorio y de la lista de artículos del
diff --git a/app/models/post_relation.rb b/app/models/post_relation.rb
index 060a9149..fe122d6c 100644
--- a/app/models/post_relation.rb
+++ b/app/models/post_relation.rb
@@ -32,10 +32,10 @@ class PostRelation < Array
 
   private
 
-  def build_layout(layout = :post)
+  def build_layout(layout = nil)
     return layout if layout.is_a? Layout
 
-    site.layouts[layout]
+    site.layouts[layout || :post]
   end
 
   # Devuelve una colección Jekyll que hace pasar el documento
diff --git a/app/models/site.rb b/app/models/site.rb
index c4fc5fd8..ac95651c 100644
--- a/app/models/site.rb
+++ b/app/models/site.rb
@@ -162,7 +162,7 @@ class Site < ApplicationRecord
     @layouts ||= data.fetch('layouts', {}).map do |name, metadata|
       { name.to_sym => Layout.new(site: self,
                                   name: name.to_sym,
-                                  metadata: metadata) }
+                                  metadata: metadata.with_indifferent_access) }
     end.inject(:merge)
   end
 
diff --git a/app/policies/post_policy.rb b/app/policies/post_policy.rb
index 103423f0..b089aecc 100644
--- a/app/policies/post_policy.rb
+++ b/app/policies/post_policy.rb
@@ -57,12 +57,14 @@ class PostPolicy
     # Las usuarias pueden ver todos los posts
     #
     # Les invitades solo pueden ver sus propios posts
+    #
+    # TODO: Arreglar
     def resolve
       return scope if scope.try(:first).try(:site).try(:usuarie?, usuarie)
 
       # Asegurarse que al menos devolvemos []
       [scope.find do |post|
-        post.author == usuarie.email
+        post.author.value == usuarie.email
       end].flatten.compact
     end
   end
diff --git a/app/views/layouts/application.html.haml b/app/views/layouts/application.html.haml
index 8c96f8c4..2db6992c 100644
--- a/app/views/layouts/application.html.haml
+++ b/app/views/layouts/application.html.haml
@@ -1,5 +1,5 @@
 !!!
-%html
+%html{ lang: I18n.locale, dir: t('dir') }
   %head
     %meta{ content: 'text/html; charset=UTF-8',
            'http-equiv': 'Content-Type' }/
@@ -11,10 +11,7 @@
     = javascript_include_tag 'application',
       'data-turbolinks-track': 'reload'
 
-    - if @site.try(:persisted?) && @site.try(:config).try(:dig, 'css')
-      %link{ rel: 'stylesheet',
-        type: 'text/css',
-        href: @site.get_url_from_site(@site.config.dig('css')) }
+    -# TODO: Reimplementar get_url_from_site
 
   - style = "background-image: url(#{@site.try(:cover)})"
   -# haml-lint:disable InlineStyles
diff --git a/app/views/posts/_attribute_feedback.haml b/app/views/posts/_attribute_feedback.haml
new file mode 100644
index 00000000..a1342c6a
--- /dev/null
+++ b/app/views/posts/_attribute_feedback.haml
@@ -0,0 +1,5 @@
+%small.feedback.form-text.text-muted{ id: id_for_help(*attribute) }
+  = post_help_t(*attribute, post: post)
+- if metadata.required
+  .invalid-feedback{ id: id_for_feedback(*attribute) }
+    = t('posts.attributes.required.feedback')
diff --git a/app/views/posts/_form.haml b/app/views/posts/_form.haml
index 3b6aee0a..d098ded4 100644
--- a/app/views/posts/_form.haml
+++ b/app/views/posts/_form.haml
@@ -1,144 +1,34 @@
-- unless @post.errors.empty?
+- unless post.errors.empty?
   .alert.alert-danger
     %ul
-      - @post.errors.each do |key, error|
+      - post.errors.each do |key, error|
         %li
-          %strong= @post.template_fields.find { |tf| tf.key == key.to_s }.try(:label) || key
+          %strong
+            = key.capitalize
           = [error].flatten.join("\n")
 
--# TODO seleccionar la dirección por defecto según el idioma actual
-- direction = @post.get_front_matter('dir') || 'ltr'
--# string para configurar la clase con direccion de texto
-- field_class = "form-control #{direction}"
--# TODO habilitar form_for
-- if @post.new?
-  - url = site_posts_path(@site, lang: @lang)
-  - method = :post
-- else
-  - url = site_post_path(@site, @post, lang: @lang)
-  - method = :patch
-- if pre = @post.template.try(:get_front_matter, 'pre')
-  = render 'layouts/help', help: CommonMarker.render_doc(pre).to_html
-= form_tag url,
-  method: method,
-  class: "form post #{@invalid ? 'was-validated' : ''}",
-  novalidate: true,
-  multipart: true do
+-# TODO: habilitar form_for
+:ruby
+  if post.new?
+    url = site_posts_path(site)
+    method = :post
+  else
+    url = site_post_path(site, post)
+    method = :patch
+  end
 
-  = hidden_field_tag 'template', params[:template]
-  .form-group
-    = submit_tag t('posts.save'), class: 'btn btn-success submit-post'
-    = submit_tag t('posts.save_incomplete'), class: 'btn btn-info submit-post-incomplete', name: 'commit_incomplete'
-    .invalid_help.alert.alert-danger.d-none= @site.config.dig('invalid_help') || t('posts.invalid_help')
-    .sending_help.alert.alert-success.d-none= @site.config.dig('sending_help') || t('posts.sending_help')
-  - if @site.usuarie? current_user
-    .form-group
-      = label_tag 'post_author', t('posts.author')
-      - todxs = (@site.usuaries + @site.invitades).compact.uniq.map(&:email)
-      = select_tag 'post[author]',
-        options_for_select(todxs, @post.author || current_user.email),
-        { class: 'form-control select2',
-          data: { tags: true,
-          placeholder: t('posts.select.placeholder'),
-          'allow-clear': true } }
-      %small.text-muted.form-text= t('posts.author_help')
-  - if @post.has_field? :dir
-    .form-group
-      = label_tag 'post_dir', t('posts.dir')
-      = select_tag 'post[dir]',
-        options_for_select([[t('posts.ltr'), 'ltr'], [t('posts.rtl'), 'rtl']], direction),
-        { class: 'form-control' }
-      %small.text-muted.form-text= t('posts.dir_help')
-  - if @post.has_field? :title
-    .form-group
-      = label_tag 'post_title', t('posts.title')
-      = text_field 'post', 'title', value: @post.title, class: field_class, required: true
-  - if @post.content?
-    .form-group{class: direction}
-      = label_tag 'post_content', t('posts.content')
-      = render 'layouts/help', help: [ t('help.markdown.intro'),
-        t('help.distraction_free_html'),
-        t('help.preview_html') ]
-      = text_area_tag 'post[content]', @post.content,
-        class: 'post-content'
-  - if @post.has_field? :date
-    .form-group
-      = label_tag 'post_date', t('posts.date')
-      = date_field 'post', 'date', value: @post.date.try(:strftime, '%F'),
-        class: 'form-control'
-      %small.text-muted.form-text= t('posts.date_help')
-  = render 'layouts/help', help: t('help.autocomplete_html')
-  - if @post.has_field? :categories
-    .form-group
-      = label_tag 'post_categories', t('posts.categories')
-      = select_tag 'post[categories][]',
-        options_for_select(@site.categories(lang: @lang), @post.categories),
-        { class: 'form-control select2', multiple: 'multiple',
-          data: { tags: true,
-          placeholder: t('posts.select.placeholder'),
-          'allow-clear': true } }
-  - if @post.has_field? :tags
-    .form-group
-      = label_tag 'post_tags', t('posts.tags')
-      = select_tag 'post[tags][]',
-        options_for_select(@site.tags(lang: @lang), @post.tags),
-        { class: 'form-control select2', multiple: 'multiple',
-          data: { tags: true,
-          placeholder: t('posts.select.placeholder'),
-          'allow-clear': true } }
-  - if @post.has_field? :slug
-    .form-group
-      = label_tag 'post_slug', t('posts.slug')
-      = text_field 'post', 'slug', value: @post.slug,
-        class: 'form-control'
-      %small.text-muted.form-text= t('posts.slug_help')
-  - if @post.has_field? :permalink
-    .form-group
-      = label_tag 'post_permalink', t('posts.permalink')
-      = text_field 'post', 'permalink', value: @post.get_front_matter('permalink'),
-        class: 'form-control'
-      %small.text-muted.form-text= t('posts.permalink_help')
-  - if @post.has_field? :layout
-    .form-group
-      = label_tag 'post_layout', t('posts.layout')
-      = select_tag 'post[layout]',
-        options_for_select(@site.layouts, @post.get_front_matter('layout')),
-        { class: 'form-control select2' }
-      %small.text-muted.form-text= t('posts.layout_help')
-  - if @site.i18n?
-    - @site.translations.each do |lang|
-      - next if lang == @lang
-      .form-group
-        = label_tag 'post_lang', t("posts.lang.#{lang}")
-        = select_tag "post[lang][#{lang}]",
-          options_for_select(@site.posts_for(lang).map { |p| [p.title, p.id] },
-          @post.get_front_matter('lang').try(:dig, lang)),
-          { class: 'form-control select2' }
-        %small.text-muted.form-text= t('posts.lang_help')
-  -# Genera todos los campos de la plantilla
-  - @post.template_fields.each do |template|
-    - next unless type = template.type
-    - if template.title.present?
-      %h1{id: template.title.tr(' ', '_').titleize}= template.title
-    - if template.subtitle.present?
-      %p= template.subtitle
-    - value = @post.new? ? template.values : @post.get_front_matter(template.key)
-    .form-group
-      = label_tag "post_#{template}", id: template do
-        = link_to '#' + template.key, class: 'text-muted',
-          data: { turbolinks: 'false' } do
-          = fa_icon 'link', title: t('posts.anchor')
-        - if template.private?
-          = fa_icon 'lock', title: t('posts.private')
-        = sanitize_markdown template.label, tags: %w[a]
-        - if template.help
-          %small.text-muted.form-text= template.help
-      = render "posts/template_field/#{type}", template: template, name: template.key, value: value
-      .invalid-feedback= t('posts.invalid')
-  .form-group
-    = submit_tag t('posts.save'), class: 'btn btn-success submit-post'
-    = submit_tag t('posts.save_incomplete'), class: 'btn btn-info submit-post-incomplete', name: 'commit_incomplete'
-    .invalid_help.alert.alert-danger.d-none= @site.config.dig('invalid_help') || t('posts.invalid_help')
-    .sending_help.alert.alert-success.d-none= @site.config.dig('sending_help') || t('posts.sending_help')
-- if post = @post.template.try(:get_front_matter, 'post')
-  = render 'layouts/help', help: CommonMarker.render_doc(post).to_html
+-# Comienza el formulario
+= form_tag url, method: method, class: 'form post', multipart: true do
+
+  -# Botones de guardado
+  = render 'posts/submit', site: site
+
+  -# Dibuja cada atributo
+  - post.attributes.each do |attribute|
+    - type = post.send(attribute).type
+    = render "posts/attributes/#{type}",
+      post: post, attribute: attribute,
+      metadata: post.send(attribute)
+
+  -# Botones de guardado
+  = render 'posts/submit', site: site
diff --git a/app/views/posts/_submit.haml b/app/views/posts/_submit.haml
new file mode 100644
index 00000000..261631ee
--- /dev/null
+++ b/app/views/posts/_submit.haml
@@ -0,0 +1,9 @@
+.form-group
+  = submit_tag t('.save'), class: 'btn btn-success submit-post'
+  = submit_tag t('.save_incomplete'),
+    class: 'btn btn-info submit-post-incomplete',
+    name: 'commit_incomplete'
+  .invalid_help.alert.alert-danger.d-none
+    = site.config.fetch('invalid_help', t('.invalid_help'))
+  .sending_help.alert.alert-success.d-none
+    = site.config.fetch('sending_help', t('.sending_help'))
diff --git a/app/views/posts/attributes/_array.haml b/app/views/posts/attributes/_array.haml
new file mode 100644
index 00000000..aab5af18
--- /dev/null
+++ b/app/views/posts/attributes/_array.haml
@@ -0,0 +1,7 @@
+-# TODO: Convertir a select2 o nuestro reemplazo
+.form-group{ class: invalid(post, attribute) }
+  = label_tag "post_#{attribute}", post_label_t(attribute, post: post)
+  = text_field 'post', attribute, value: metadata.value.join(', '),
+    **field_options(attribute, metadata)
+  = render 'posts/attribute_feedback',
+    post: post, attribute: attribute, metadata: metadata
diff --git a/app/views/posts/attributes/_content.haml b/app/views/posts/attributes/_content.haml
new file mode 100644
index 00000000..ee226d35
--- /dev/null
+++ b/app/views/posts/attributes/_content.haml
@@ -0,0 +1,6 @@
+.form-group{ class: invalid(post, attribute) }
+  = label_tag "post_#{attribute}", post_label_t(attribute, post: post)
+  = render 'posts/attribute_feedback',
+    post: post, attribute: attribute, metadata: metadata
+  = text_area_tag "post[#{attribute}]", metadata.value,
+    **field_options(attribute, metadata)
diff --git a/app/views/posts/attributes/_document_date.haml b/app/views/posts/attributes/_document_date.haml
new file mode 100644
index 00000000..cc9b46fe
--- /dev/null
+++ b/app/views/posts/attributes/_document_date.haml
@@ -0,0 +1,6 @@
+.form-group{ class: invalid(post, attribute) }
+  = label_tag "post_#{attribute}", post_label_t(attribute, post: post)
+  = date_field 'post', attribute, value: metadata.value.strftime('%F'),
+    **field_options(attribute, metadata)
+  = render 'posts/attribute_feedback',
+    post: post, attribute: attribute, metadata: metadata
diff --git a/app/views/posts/attributes/_image.haml b/app/views/posts/attributes/_image.haml
new file mode 100644
index 00000000..5922e423
--- /dev/null
+++ b/app/views/posts/attributes/_image.haml
@@ -0,0 +1,20 @@
+.form-group{ class: invalid(post, attribute) }
+  - if metadata.value['path'].present?
+    = image_tag metadata.value[:path], alt: metadata.value['description']
+
+  .custom-file
+    = file_field(*field_name_for('post', attribute, :path),
+      **field_options(attribute, metadata), class: 'custom-file-input')
+    = label_tag "post_#{attribute}_path",
+      post_label_t(attribute, :path, post: post), class: 'custom-file-label'
+    = render 'posts/attribute_feedback',
+      post: post, attribute: [attribute, :path], metadata: metadata
+
+.form-group{ class: invalid(post, attribute) }
+  = label_tag "post_#{attribute}_description",
+    post_label_t(attribute, :description, post: post)
+  = text_field(*field_name_for('post', attribute, :description),
+    value: metadata.value['description'],
+    **field_options(attribute, metadata))
+  = render 'posts/attribute_feedback',
+    post: post, attribute: [attribute, :description], metadata: metadata
diff --git a/app/views/posts/attributes/_slug.haml b/app/views/posts/attributes/_slug.haml
new file mode 100644
index 00000000..d0f7b4d1
--- /dev/null
+++ b/app/views/posts/attributes/_slug.haml
@@ -0,0 +1,6 @@
+.form-group{ class: invalid(post, attribute) }
+  = label_tag "post_#{attribute}", post_label_t(attribute, post: post)
+  = text_field 'post', attribute, value: metadata.value,
+    **field_options(attribute, metadata)
+  = render 'posts/attribute_feedback',
+    post: post, attribute: attribute, metadata: metadata
diff --git a/app/views/posts/attributes/_string.haml b/app/views/posts/attributes/_string.haml
new file mode 100644
index 00000000..d0f7b4d1
--- /dev/null
+++ b/app/views/posts/attributes/_string.haml
@@ -0,0 +1,6 @@
+.form-group{ class: invalid(post, attribute) }
+  = label_tag "post_#{attribute}", post_label_t(attribute, post: post)
+  = text_field 'post', attribute, value: metadata.value,
+    **field_options(attribute, metadata)
+  = render 'posts/attribute_feedback',
+    post: post, attribute: attribute, metadata: metadata
diff --git a/app/views/posts/index.haml b/app/views/posts/index.haml
index 0b266625..7beea4b0 100644
--- a/app/views/posts/index.haml
+++ b/app/views/posts/index.haml
@@ -1,44 +1,21 @@
 .row
   .col
     = render 'layouts/breadcrumb',
-      crumbs: [ link_to(t('sites.index'), sites_path), @site.name, link_to(t('posts.index'), site_posts_path(@site)), @category ]
+      crumbs: [link_to(t('sites.index'), sites_path),
+        @site.name,
+        link_to(t('posts.index'),
+        site_posts_path(@site)),
+        @category]
     = render 'layouts/help', help: t('help.breadcrumbs')
 .row
   .col
-    %h1= @site.config.fetch('title', @site.name_with_i18n(@lang))
+    %h1= @site.title
 
 .row
   .col
     .btn-group
-      - if @site.templates.empty?
-        = link_to t('posts.new'), new_site_post_path(@site, lang: @lang),
-          class: 'btn btn-success'
-      - else
-        = link_to t('posts.new_with_template', template: @site.templates.first.id.humanize),
-          new_site_post_path(@site, lang: @lang, template: @site.templates.first.id),
-          class: 'btn btn-success'
-        - if @site.usuarie? current_usuarie
-          %button.btn.btn-success.dropdown-toggle.dropdown-toggle-split{data: { toggle: 'split' },
-            aria: { haspopup: 'true', expanded: 'false' }}
-            %span.sr-only= t('posts.dropdown')
-          .dropdown-menu
-            - @site.templates.each do |template|
-              = link_to template.id.humanize,
-                new_site_post_path(@site, lang: @lang, template: template.id),
-                class: 'dropdown-item'
-    - @site.translations.each do |l|
-      = link_to t("i18n.#{l}"), site_posts_path(@site, category: @category, lang: l),
-        class: 'btn btn-info'
-    .btn-group.pull-right
-      = link_to t('posts.categories'), site_posts_path(@site, lang: @lang), class: 'btn btn-secondary'
-      %button.btn.btn-secondary.dropdown-toggle.dropdown-toggle-split{data: { toggle: 'split' },
-        aria: { haspopup: 'true', expanded: 'false' }}
-        %span.sr-only= t('posts.dropdown')
-      .dropdown-menu
-        - @site.categories.each do |c|
-          = link_to c.split(':').first,
-            site_posts_path(@site, lang: @lang, category: c),
-            class: (params[:category] == c) ? 'dropdown-item active' : 'dropdown-item'
+      = link_to t('posts.new'), new_site_post_path(@site),
+        class: 'btn btn-success'
 
 .row
   .col
@@ -54,80 +31,35 @@
                 category: @category,
                 lang: @lang,
                 sort_by: s)
-      = form_tag site_reorder_posts_path, method: :post do
-        = hidden_field 'posts', 'lang', value: @lang
-        - if policy(@site).reorder_posts?
-          - if @site.ordered? @lang
-            .reorder-posts-panel.alert.alert-info.alert-dismissible.fade.show{role: 'alert'}
-              = raw t('help.posts.reorder')
-              %br
-              = submit_tag t('posts.reorder_posts'), class: 'btn btn-success'
-              %button.close{type: 'button',
-                'aria-label': t('help.close') }
-                %span{'aria-hidden': true} &times;
-          - else
-            .alert.alert-danger.alert-dismissible.fade.show{role: 'alert'}
-              = raw t('errors.posts.disordered')
-              %br
-              = hidden_field 'posts', 'force', value: true
-              = submit_tag t('errors.posts.disordered_button'), class: 'btn btn-danger'
-              %button.close{type: 'button',
-                data: { dismiss: 'alert' },
-                'aria-label': t('help.close') }
-                %span{'aria-hidden': true} &times;
-        %table.table.table-condensed.table-striped{class: (@site.ordered? @lang) ? 'table-draggable' : ''}
-          %tbody
-            - @posts.each_with_index do |post, i|
-              - if @category
-                -# saltearse el post a menos que esté en la categoría
-                -# por la que estamos filtrando
-                - next unless post.categories.include?(@category)
-              -# establecer la direccion del texto
-              - direction = post.get_front_matter(:dir)
-              %tr
-                - if policy(@site).reorder_posts? && @site.ordered?(@lang)
+          %table.table.table-condensed.table-striped
+            %tbody
+              - @posts.each do |post|
+                -#
+                  saltearse el post a menos que esté en la categoría por
+                  la que estamos filtrando
+                - if @category
+                  - next unless post.categories.value.include?(@category)
+                %tr
                   %td
-                    = fa_icon 'arrows-v', class: 'handle'
-                    = hidden_field 'posts[order]', i, value: post.order, class: 'post_order'
-                    %small
+                    = link_to post.title.value,
+                      site_post_path(@site, post.id)
+                    - unless post.categories.value.empty?
                       %br
-                      %span.order.is= post.order
-                      %span.order.was.d-none{data: { order: post.order }}= "(#{post.order})"
+                      %small
+                        - post.categories.value.each do |c|
+                          = link_to c, site_posts_path(@site, category: c)
 
-                %td{class: direction}
-                  = link_to post.title, site_post_path(@site, post, lang: @lang)
-                  - unless post.categories.empty?
-                    %br
-                    %small
-                      - post.categories.each do |c|
-                        = link_to c, site_posts_path(@site, category: c, lang: @lang),
-                          data: { toggle: 'tooltip' }, title: t('help.category')
-                  - if post.draft? || post.incomplete?
-                    %br
-                    - if post.draft?
-                      %span.badge.badge-info= t('posts.draft')
-                    - if post.incomplete?
-                      %span.badge.badge-warning= t('posts.incomplete')
-
-                %td
-                  - if post.translations
-                    %small
-                      - post.translations.each do |pt|
-                        = link_to pt.title, site_post_path(@site, pt, lang: pt.lang),
-                          data: { toggle: 'tooltip' }, title: t("i18n.#{pt.lang}")
-                        %br
-
-                %td= post.date.strftime('%F')
-                %td
-                  - if policy(post).edit?
-                    = link_to t('posts.edit'),
-                    edit_site_post_path(@site, post, lang: @lang),
-                    class: 'btn btn-info'
-                  - if policy(post).destroy?
-                    = link_to t('posts.destroy'),
-                      site_post_path(@site, post, lang: @lang),
-                      class: 'btn btn-danger',
-                      method: :delete,
-                      data: { confirm: t('posts.confirm_destroy') }
+                  %td= post.date.value.strftime('%F')
+                  %td
+                    - if policy(post).edit?
+                      = link_to t('posts.edit'),
+                      edit_site_post_path(@site, post.id),
+                      class: 'btn btn-info'
+                    - if policy(post).destroy?
+                      = link_to t('posts.destroy'),
+                        site_post_path(@site, post.id),
+                        class: 'btn btn-danger',
+                        method: :delete,
+                        data: { confirm: t('posts.confirm_destroy') }
     - else
       %h2= t('posts.none')
diff --git a/app/views/posts/new.haml b/app/views/posts/new.haml
index dea3dd72..184227b6 100644
--- a/app/views/posts/new.haml
+++ b/app/views/posts/new.haml
@@ -1,6 +1,11 @@
 .row
   .col
-    = render 'layouts/breadcrumb', crumbs: [ link_to(t('sites.index'), sites_path), @site.name, link_to(t('posts.index'), site_posts_path(@site)), t('posts.new') ]
+    = render 'layouts/breadcrumb',
+      crumbs: [link_to(t('sites.index'), sites_path),
+        @site.name,
+        link_to(t('posts.index'),
+        site_posts_path(@site)), t('posts.new')]
+
 .row.justify-content-center
   .col-md-8
-    = render 'posts/form'
+    = render 'posts/form', site: @site, post: @post
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 2c08ee14..ad57552b 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1,4 +1,5 @@
 en:
+  dir: ltr
   site_service:
     create: 'Created %{name}'
     update: 'Updated %{name}'
@@ -53,6 +54,8 @@ en:
         lang: 'Main language'
       site:
         name: 'Name'
+        title: 'Title'
+        description: 'Description'
     errors:
       models:
         site:
@@ -297,6 +300,17 @@ en:
     en: 'English'
     ar: 'Arabic'
   posts:
+    submit:
+      save: 'Save'
+      save_incomplete: 'Save as draft'
+      invalid_help: 'Some fields need attention! Please search for the fields marked as invalid.'
+    attributes:
+      date:
+        label: Date
+        help: Publication date for this post.  If you use a date in the future the post won't be published until then.
+      required:
+        label: ' (required)'
+        feedback: 'This field cannot be empty!'
     reorder_posts: 'Reorder posts'
     sort:
       by: 'Sort by'
@@ -310,59 +324,8 @@ en:
     categories: 'Everything'
     index: 'Posts'
     edit: 'Edit'
-    save: 'Send'
-    save_incomplete: 'Save for later'
     draft: revision
     incomplete: draft
-    author: 'Author'
-    author_help: 'You can change the authorship of the post.  If your site accepts guests, changing the authorship to an e-mail address will allow them to edit the post.'
-    date: 'Publication date'
-    date_help: 'This changes the articles order!'
-    title: 'Title'
-    tags: 'Tags'
-    tags_help: 'Comma separated!'
-    tags: 'Tags'
-    slug: 'Slug'
-    slug_help: 'This is the name of the article on the URL, ie. /title/.  You can leave it empty.  If you changed the title and you want to change the file name, empty this field.'
-    cover: 'Cover'
-    cover_help: 'Path to the cover'
-    layout: 'Layout'
-    layout_help: 'The layout of this post'
-    objetivos: 'Objectives'
-    objetivos_help: 'Objectives of this session'
-    permalink: 'Permanent link'
-    permalink_help: "If you want to access the post from a specific URL, use this field.  Don't forget to start with a /"
-    recomendaciones: 'Recommendations'
-    recomendaciones_help: 'Recommendations for this session'
-    duracion: 'Duration'
-    duracion_help: "How long does the session take to finish?"
-    habilidades: 'Skill level'
-    habilidades_help: 'Skills required for this session'
-    formato: 'Format'
-    formato_help: 'Format of this session'
-    conocimientos: 'Required knowledge'
-    conocimientos_help: 'Select all required knowledge for this session'
-    sesiones_ejercicios_relacionados: 'Related sessions/exercises'
-    sesiones_ejercicios_relacionados_help: 'Select all related sessions/exercises'
-    materiales_requeridos: 'Needed materials'
-    materiales_requeridos_help: 'Select all materials needed for this session'
-    lang:
-      es: 'Castillian Spanish'
-      en: 'English'
-      ar: 'Arabic'
-    lang_help: 'The same article in another language.'
-    rtl: 'Right to left'
-    ltr: 'Left to right'
-    dir: 'Text direction'
-    dir_help: 'The reading direction of the language'
-    logger:
-      rm: 'Removed %{path}'
-    errors:
-      path: 'File already exist'
-      file: "Couldn't write the file"
-      title: 'Post needs a title'
-      date: 'Post needs a valid date'
-      slug_with_path: "The slug is the short name for the article, as shown in the URL.  It can't contain \"/\" ;)"
     invalid: 'This field is required!'
     open: 'Tip: You can add new options by typing them and pressing Enter'
     private: '&#128274; The values of this field will remain private'
diff --git a/config/locales/es.yml b/config/locales/es.yml
index f7fe475d..f5a2b9b5 100644
--- a/config/locales/es.yml
+++ b/config/locales/es.yml
@@ -1,4 +1,5 @@
 es:
+  dir: ltr
   site_service:
     create: 'Creado %{name}'
     update: 'Actualizado %{name}'
@@ -312,6 +313,17 @@ es:
     en: 'inglés'
     ar: 'árabe'
   posts:
+    submit:
+      save: 'Guardar'
+      save_incomplete: 'Guardar como borrador'
+      invalid_help: '¡Te faltan completar algunos campos! Busca los que estén marcados como inválidos'
+    attributes:
+      date:
+        label: Fecha
+        help: La fecha de publicación del artículo.  Si colocas una fecha en el futuro no se publicará hasta ese día.
+      required:
+        label: ' (requerido)'
+        feedback: '¡Este campo no puede estar vacío!'
     reorder_posts: 'Reordenar artículos'
     sort:
       by: 'Ordenar por'
@@ -327,60 +339,6 @@ es:
     edit: 'Editar'
     draft: en revisión
     incomplete: borrador
-    save: 'Enviar'
-    save_incomplete: 'Guardar para después'
-    author: 'Autorx'
-    author_help: 'Puedes cambiar la autoría del artículo aquí.  Si el sitio acepta invitadxs, poner la dirección de correo de alguien aquí le permite editarlo.'
-    date: 'Fecha de publicación'
-    date_help: '¡Esto cambia el orden de los artículos!'
-    title: 'Título'
-    categories: 'Categorías'
-    tags: 'Etiquetas'
-    slug: 'Nombre la URL'
-    slug_help: 'Esto es el nombre del artículo en la URL, por ejemplo
-    /título/.  Puedes dejarlo vacío.  Si cambiaste el título y quieres
-    que la URL cambie, borra el contenido de este campo.'
-    cover: 'Portada'
-    cover_help: 'La dirección de la portada'
-    layout: 'Plantilla'
-    layout_help: 'El tipo de plantilla'
-    objetivos: 'Objetivos'
-    objetivos_help: 'Objetivos de esta sesión'
-    permalink: 'Dirección del enlace'
-    permalink_help: 'Si quieres que el artículo se acceda desde esta URL completa aquí, no te olvides de empezar con /'
-    habilidades: 'Habilidades'
-    habilidades_help: 'Habilidades requeridas para esta sesión'
-    formato: 'Formato'
-    formato_help: 'Formato de esta sesión'
-    conocimientos: 'Conocimientos'
-    conocimientos_help: 'Elige todos los conocimientos requeridos para abordar esta sesión'
-    sesiones_ejercicios_relacionados: 'Sesiones y ejercicios relacionados'
-    sesiones_ejercicios_relacionados_help: 'Elige todas las sesiones relacionadas con esta'
-    materiales_requeridos: 'Materiales requeridos'
-    materiales_requeridos_help: 'Materiales necesarios para esta sesión'
-    recomendaciones: 'Recomendaciones'
-    recomendaciones_help: 'Recomendaciones para esta sesión'
-    duracion: 'Duración'
-    duracion_help: '¿Cuánto dura la sesión?'
-    lang:
-      es: 'Artículo en castellano'
-      en: 'Artículo en inglés'
-      ar: 'Artículo en árabe'
-    lang_help: 'El mismo artículo en otro idioma'
-    rtl: 'Derecha a izquierda'
-    ltr: 'Izquierda a derecha'
-    dir: 'Dirección del texto'
-    dir_help: 'La dirección de lectura del idioma'
-    dir_help: 'Cambiar la dirección del texto, por ej. el árabe se lee de derecha a izquierda'
-    logger:
-      rm: 'Eliminado %{path}'
-    errors:
-      path: 'El archivo destino ya existe'
-      file: 'No se pudo escribir el archivo'
-      title: 'Necesita un título'
-      date: 'Necesita una fecha'
-      slug_with_path: 'El slug es el nombre corto del artículo, tal como figura en la URL.  No puede contener "/" ;)'
-    invalid: '¡Este campo es obligatorio!'
     open: 'Nota: Puedes agregar más opciones a medida que las escribes y presionas Entrar'
     private: '&#128274; Los valores de este campo serán privados'
     select:
diff --git a/doc/posts.md b/doc/posts.md
index ddb1fbb2..852f351b 100644
--- a/doc/posts.md
+++ b/doc/posts.md
@@ -98,3 +98,11 @@ Al instanciar un `Post`, se pasan el sitio y la plantilla por defecto.
   utilizada)
 * Reimplementar orden de artículos (ver doc)
 * Convertir layout a params
+* Reimplementar plantillas
+* Reimplementar subida de imagenes/archivos
+* Reimplementar campo 'pre' y 'post' en los layouts.yml
+* Implementar autoría como un array
+* Reimplementar draft e incomplete (por qué eran distintos?)
+
+* Convertir idiomas disponibles a pestañas?
+* Implementar traducciones sin adivinar. Vincular artículos entre sí
diff --git a/test/models/post_test.rb b/test/models/post_test.rb
index a5236f17..a0ea5eb0 100644
--- a/test/models/post_test.rb
+++ b/test/models/post_test.rb
@@ -162,6 +162,7 @@ class PostTest < ActiveSupport::TestCase
   test 'se pueden crear nuevos' do
     post = @site.posts.build(layout: :post)
     post.title.value = 'test'
+    post.content.value = 'test'
 
     assert post.new?
     assert post.save