panel/app/views/posts/_htmx_form.haml

-#
  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 = params.permit(:inverse).try(:[], :inverse).presence)
    except << inverse.to_sym
  end

  options = {
    id: params.require(:form),
    multipart: true,
    class: 'form post ',
    'hx-swap': params.require(:swap),
    'hx-target': "##{params.require(:target)}",
    'hx-validate': true,
    data: {
      controller: 'form-validation',
      action: 'form-validation#submit',
      'form-validation-submitting-id-value': params.permit(:submitting).values.first,
      'form-validation-invalid-id-value': params.permit(:invalid).values.first,
    }
  }

  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
  - 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

  -# Parámetros para HTMX
  %input{ type: 'hidden', name: 'hide', value: params.permit((post.errors.empty? ? :show : :hide)).try(:values).try(:first) }
  %input{ type: 'hidden', name: 'show', value: params.permit((post.errors.empty? ? :hide : :show)).try(:values).try(:first) }
  %input{ type: 'hidden', name: 'name', value: params.require(:name) }
  %input{ type: 'hidden', name: 'base', value: params.require(: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: params.require(:attribute) }
  %input{ type: 'hidden', name: 'target', value: params.require(:target) }
  %input{ type: 'hidden', name: 'swap', value: params.require(:swap) }
  - if params[:inverse].present?
    %input{ type: 'hidden', name: 'inverse', value: params.require(:inverse) }
  - if params[:saved].present?
    %input{ type: 'hidden', name: 'saved', value: params.require(: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|
    %input{ type: 'hidden', name: "#{base}[#{attr}]", value: params[attr].presence }

= yield(:post_form)