panel/app/views/posts/attributes/_image.haml

.form-group{ data: { controller: 'file-preview' } }
  = label_tag "#{base}_#{attribute}", post_label_t(attribute, post: post)
  - if metadata.static_file
    = image_tag url_for(metadata.static_file),
                alt: metadata.value['description'],
                class: 'img-fluid',
                data: { target: 'file-preview.preview' }

    -# Mantener el valor si no enviamos ninguna imagen
    = hidden_field_tag "#{base}[#{attribute}][path]", metadata.value['path']
    -# Las imágenes requeridas solo se pueden reemplazar
    - unless metadata.required
      .custom-control.custom-switch
        = check_box_tag "#{base}[#{attribute}][path]",
                        '',
                        false,
                        id: "#{base}_#{attribute}_destroy",
                        class: 'custom-control-input'
        = label_tag "#{base}_#{attribute}_destroy",
                    t('posts.attributes.image.destroy'),
                    class: 'custom-control-label'
  - else
    = image_tag '',
                alt: metadata.value['description'],
                class: 'img-fluid',
                data: { target: 'file-preview.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)}",
                 accept: ActiveStorage.web_image_content_types.join(','),
                 data: { target: 'file-preview.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',
             post: post, attribute: [attribute, :path], metadata: metadata

.form-group
  = label_tag "#{base}_#{attribute}_description",
              post_label_t(attribute, :description, post: post, required: false)
  = text_field(*field_name_for(base, attribute, :description),
               value: metadata.value['description'],
               dir: dir, lang: locale,
               **field_options(attribute, metadata, required: false))
  = render 'posts/attribute_feedback',
           post: post, attribute: [attribute, :description], metadata: metadata