title: ExtJS 6. Adding column to grid
body: <p>I want to add additional column to grid dynamically on table instantiation.
  So, I've added <strong>process</strong>  function to gridPanel with following section</p>
  
  <pre><code>   var clmn = {
                  xtype: 'checkcolumn',
                  dataIndex: 'test,
                  editor: {
                      xtype: 'checkboxfield'
                  }
              };
     config.columns.push(clmn);
  </code></pre>
  
  <p>As you can see, <a href="http://examples.sencha.com/extjs/6.0.1/examples/classic/grid/row-editing.html" rel="nofollow">rowediting</a> plugin is used here too.</p>
  
  <p>Actually column is added and displayed on screen. But it is not hold correct data that has been loaded, only defaultValue from model.</p>
  
  <p>On row modification (when rowediting plugin is started) real data is displayed.</p>
  
  <p>What is the issue here? May be there is some refresh method that should be used to refresh metadata or sth like this..</p>
  
  <p><em>Please, take into consideration that i am working via Sencha Architect</em></p>