Yielding content_for with a block of default content

Question

Our Rails projects make heavy use of content_for. However, we quite often need to render default content if nothing is defined using content_for. F

Answer 1

This can be done entirely in the view using the content_for? method.

<% if content_for?(:sidebar_content) %>
  <%= yield(:sidebar_content) %>
<% else %>
  <ul id="sidebar">
    <li>Some default content</li>
  </ul>
<% end %>