diff --git a/app/models/metadata_file.rb b/app/models/metadata_file.rb
new file mode 100644
index 00000000..06e69be0
--- /dev/null
+++ b/app/models/metadata_file.rb
@@ -0,0 +1,106 @@
+# frozen_string_literal: true
+
+# Define un campo de archivo
+class MetadataFile < MetadataTemplate
+  # Una ruta vacía a la imagen con una descripción vacía
+  def default_value
+    { 'path' => nil, 'description' => nil }
+  end
+
+  def empty?
+    value == default_value
+  end
+
+  def validate
+    super
+
+    errors << I18n.t('metadata.image.path_required') if path_missing?
+
+    errors.compact!
+    errors.empty?
+  end
+
+  # Determina si necesitamos la imagen pero no la tenemos
+  def path_missing?
+    required && !value['path'].blank?
+  end
+
+  # Determina si el archivo ya fue subido
+  def uploaded?
+    value['path'].is_a?(String)
+  end
+
+  # Determina si la ruta es opcional pero deja pasar si la ruta se
+  # especifica
+  def path_optional?
+    !required && value['path'].blank?
+  end
+
+  # Asociar la imagen subida al sitio y obtener la ruta
+  def save
+    return true if uploaded?
+    return true if path_optional?
+    return false unless hardlink.zero?
+
+    # Modificar el valor actual
+    value['path'] = relative_destination_path
+
+    true
+  end
+
+  def to_param
+    { name => %i[description path] }
+  end
+
+  # Almacena el archivo en el sitio y lo devuelve
+  #
+  # @return ActiveStorage::Attachment
+  def static_file
+    ActiveRecord::Base.connection_pool.with_connection do
+      if uploaded?
+        blob = ActiveStorage::Blob.find_by(key: key_from_path)
+        @static_file ||= site.static_files.find_by(blob_id: blob.id)
+      elsif site.static_files.attach(value['path'])
+        @static_file ||= site.static_files.last
+      end
+    end
+  end
+
+  private
+
+  def key_from_path
+    # XXX: No podemos usar self#extension porque en este punto todavía
+    # no sabemos el static_file
+    File.basename(value['path'], '.*')
+  end
+
+  # Hacemos un link duro para colocar el archivo dentro del repositorio
+  # y no duplicar el espacio que ocupan.  Esto requiere que ambos
+  # directorios estén dentro del mismo punto de montaje.
+  def hardlink
+    FileUtils.mkdir_p File.dirname(destination_path)
+    FileUtils.ln uploaded_path, destination_path
+  end
+
+  def extension
+    static_file.blob.content_type.split('/').last
+  end
+
+  # Obtener la ruta al archivo
+  # https://stackoverflow.com/a/53908358
+  def uploaded_relative_path
+    ActiveStorage::Blob.service.path_for(static_file.key)
+  end
+
+  def uploaded_path
+    Rails.root.join uploaded_relative_path
+  end
+
+  def relative_destination_path
+    File.join('public', [static_file.key, extension].join('.'))
+  end
+
+  def destination_path
+    File.join(site.path, relative_destination_path)
+  end
+end
diff --git a/app/models/metadata_image.rb b/app/models/metadata_image.rb
index 9da909a6..50109ae8 100644
--- a/app/models/metadata_image.rb
+++ b/app/models/metadata_image.rb
@@ -1,37 +1,16 @@
 # frozen_string_literal: true
 
 # Define un campo de imagen
-# TODO: Validar que sea una imagen
-class MetadataImage < MetadataTemplate
-  # Una ruta vacía a la imagen con una descripción vacía
-  def default_value
-    { 'path' => nil, 'description' => nil }
-  end
-
-  def empty?
-    value == default_value
-  end
-
+class MetadataImage < MetadataFile
   def validate
     super
 
-    errors << I18n.t('metadata.image.path_required') if path_missing?
     errors << I18n.t('metadata.image.not_an_image') unless image?
 
     errors.compact!
     errors.empty?
   end
 
-  # Determina si necesitamos la imagen pero no la tenemos
-  def path_missing?
-    required && !value['path'].blank?
-  end
-
-  # Determina si el archivo ya fue subido
-  def uploaded?
-    value['path'].is_a?(String)
-  end
-
   # Determina si es una imagen antes de subirla
   def image?
     if value['path'].is_a? ActionDispatch::Http::UploadedFile
@@ -44,78 +23,4 @@ class MetadataImage < MetadataTemplate
       true
     end
   end
-
-  # Determina si la ruta es opcional pero deja pasar si la ruta se
-  # especifica
-  def path_optional?
-    !required && value['path'].blank?
-  end
-
-  # Asociar la imagen subida al sitio y obtener la ruta
-  def save
-    return true if uploaded?
-    return true if path_optional?
-    return false unless hardlink.zero?
-
-    # Modificar el valor actual
-    value['path'] = relative_destination_path
-
-    true
-  end
-
-  def to_param
-    { name => %i[description path] }
-  end
-
-  # Almacena el archivo en el sitio y lo devuelve
-  #
-  # @return ActiveStorage::Attachment
-  def static_file
-    ActiveRecord::Base.connection_pool.with_connection do
-      if uploaded?
-        blob = ActiveStorage::Blob.find_by(key: key_from_path)
-        @static_file ||= site.static_files.find_by(blob_id: blob.id)
-      elsif site.static_files.attach(value['path'])
-        @static_file ||= site.static_files.last
-      end
-    end
-  end
-
-  private
-
-  def key_from_path
-    # XXX: No podemos usar self#extension porque en este punto todavía
-    # no sabemos el static_file
-    File.basename(value['path'], '.*')
-  end
-
-  # Hacemos un link duro para colocar el archivo dentro del repositorio
-  # y no duplicar el espacio que ocupan.  Esto requiere que ambos
-  # directorios estén dentro del mismo punto de montaje.
-  def hardlink
-    FileUtils.mkdir_p File.dirname(destination_path)
-    FileUtils.ln uploaded_path, destination_path
-  end
-
-  def extension
-    static_file.blob.content_type.split('/').last
-  end
-
-  # Obtener la ruta al archivo
-  # https://stackoverflow.com/a/53908358
-  def uploaded_relative_path
-    ActiveStorage::Blob.service.path_for(static_file.key)
-  end
-
-  def uploaded_path
-    Rails.root.join uploaded_relative_path
-  end
-
-  def relative_destination_path
-    File.join('public', [static_file.key, extension].join('.'))
-  end
-
-  def destination_path
-    File.join(site.path, relative_destination_path)
-  end
 end
diff --git a/app/models/metadata_url.rb b/app/models/metadata_url.rb
new file mode 100644
index 00000000..125d5cdb
--- /dev/null
+++ b/app/models/metadata_url.rb
@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+# Un campo de URL
+class MetadataUrl < MetadataString; end
diff --git a/app/views/posts/attribute_ro/_file.haml b/app/views/posts/attribute_ro/_file.haml
new file mode 100644
index 00000000..55c086f5
--- /dev/null
+++ b/app/views/posts/attribute_ro/_file.haml
@@ -0,0 +1,7 @@
+%tr{ id: attribute }
+  %th= post_label_t(attribute, :path, post: post)
+  %td
+    - if metadata.value['path'].present?
+      %figure
+        = link_to url_for(metadata.static_file)
+        %figcaption= metadata.value['description']
diff --git a/app/views/posts/attribute_ro/_order.haml b/app/views/posts/attribute_ro/_order.haml
new file mode 100644
index 00000000..31dd8f0d
--- /dev/null
+++ b/app/views/posts/attribute_ro/_order.haml
@@ -0,0 +1,3 @@
+%tr{ id: attribute }
+  %th= post_label_t(attribute, post: post)
+  %td= metadata.value
diff --git a/app/views/posts/attribute_ro/_url.haml b/app/views/posts/attribute_ro/_url.haml
new file mode 100644
index 00000000..74c240bd
--- /dev/null
+++ b/app/views/posts/attribute_ro/_url.haml
@@ -0,0 +1,3 @@
+%tr{ id: attribute }
+  %th= post_label_t(attribute, post: post)
+  %td= link_to metadata.value
diff --git a/app/views/posts/attributes/_file.haml b/app/views/posts/attributes/_file.haml
new file mode 100644
index 00000000..cf2d67b4
--- /dev/null
+++ b/app/views/posts/attributes/_file.haml
@@ -0,0 +1,22 @@
+.form-group
+  - if metadata.uploaded?
+    = hidden_field_tag "post[#{attribute}][path]", metadata.value['path']
+
+  .custom-file
+    = file_field(*field_name_for('post', attribute, :path),
+      **field_options(attribute, metadata),
+      class: "custom-file-input #{invalid(post, attribute)}",
+      data: { preview: "#{attribute}-preview" })
+    = 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
+  = 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/_order.haml b/app/views/posts/attributes/_order.haml
new file mode 100644
index 00000000..0aab9802
--- /dev/null
+++ b/app/views/posts/attributes/_order.haml
@@ -0,0 +1 @@
+-# nada
diff --git a/app/views/posts/attributes/_url.haml b/app/views/posts/attributes/_url.haml
new file mode 100644
index 00000000..eff3f1d5
--- /dev/null
+++ b/app/views/posts/attributes/_url.haml
@@ -0,0 +1,6 @@
+.form-group
+  = label_tag "post_#{attribute}", post_label_t(attribute, post: post)
+  = url_field 'post', attribute, value: metadata.value,
+    **field_options(attribute, metadata)
+  = render 'posts/attribute_feedback',
+    post: post, attribute: attribute, metadata: metadata