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

.form-group{ data: { controller: 'file-preview' } }
  - if metadata.static_file
    - case metadata.static_file.blob.content_type
      - when %r{\Avideo/}
        = video_tag url_for(metadata.static_file),
          controls: true, class: 'img-fluid',
          data: { target: 'file-preview.preview' }
      - when %r{\Aaudio/}
        = audio_tag url_for(metadata.static_file),
          controls: true, class: 'img-fluid',
          data: { target: 'file-preview.preview' }
      - when 'application/pdf'
        %iframe{ src: url_for(metadata.static_file) }
      - else
        = link_to t('posts.attribute_ro.file.download'),
          url_for(metadata.static_file)
    -# Mantener el valor si no enviamos ninguna imagen
    = hidden_field_tag "#{base}[#{attribute}][path]", metadata.value['path']
    -# Los archivos requeridos 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.file.destroy'), class: 'custom-control-label'

  .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)}",
      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