%# content_for :javascript_includes do %> <%#= javascript_include_tag "/assets/ckeditor/ckeditor" %> <%# end %> <%= simple_form_for [:admin, @banner], html: {multipart: true}, wrapper: :horizontal_form, wrapper_mappings: { file: :horizontal_file } do |f| %> <%= f.error_notification %> <%= f.input :image, as: :file %>