display edit action for only owners

app/views/learning_objects/show.html.erb

@@ -89,11 +89,15 @@
               </a>
               <%= render 'share_modal' %>
             </div>
-            <div class="action">
-              <a tabindex="1" class="btn btn-primary" role="button" title="Editar conteúdo" href="<%= edit_learning_objects_path(@learning_object) %>">
-                <i class="fa fa-pencil"></i>
-              </a>
-            </div>
+
+            <% if policy(@learning_object).update? %>
+                <div class="action">
+                  <a tabindex="1" class="btn btn-primary" role="button" title="Editar conteúdo" href="<%= edit_learning_objects_path(@learning_object) %>">
+                    <i class="fa fa-pencil"></i>
+                  </a>
+                </div>
+            <% end %>
+
           </div>
         <% else %>
           <div class="login-info">