ref: master
plugins/diagramo/views/content_viewer/diagramo_plugin/_new_diagram_button.html.erb
<% if @page.allow_create?(user) %>
<%= button :diagramo, _('Enviar diagrama'), profile: profile.identifier, controller: :cms, action: :new, type: 'DiagramoPlugin::Diagram', parent_id: article.id %>
<% end %>