title: EXTJS Proxy type rest mal-formatted url for DELETE http request
body: <p>I'm having trouble when I try to do a delete object by using restful:
  In an xtype "actioncolumn" button I have this handler:</p>
  
  <pre><code>handler: function (grid, rowIndex, colIndex) {
                              Ext.MessageBox.confirm('Delete', 'Are you sure ?', function (btn) {
                                  if (btn === 'yes') {
                                      var rec = grid.getStore().getAt(rowIndex);
                                      store.removeAt(rowIndex);
                                      store.sync();
                                  }
                              });
  }
  </code></pre>
  
  <p>And when I click on delete button following url is requested:</p>
  
  <p><code>http://10.100.0.194:8080/api/users/App.model.User-6</code></p>
  
  <p>Where the hell comes from: App.model.User-6 ?, it should be user id object (int). On my model I've idProperty: user_id already.</p>
  
  <p>Thanks for helping </p>