-<a href="<%= url_for( controller => 'actions', action => 'changes' ) %>">changes</a>
-<a href="<%= url_for( controller => 'actions', action => 'index' ) %>">actions</a>
+<a href="<%= url_for( controller => 'actions', action => 'changes', id => 0 ) %>">changes</a>
+<a href="<%= url_for( controller => 'actions', action => 'index', id => 0 ) %>">actions</a>