title: EXTJS Checkbox showing as [object Object]
body: <p>I have a column that renders based on the value of a previous column in the record.</p>
  
  <p>If the value matches, it should display a checkbox but instead, it's displaying on the grid as [object Object]</p>
  
  <p>Can anyone suggest what I need to add to show this?</p>
  
  <pre><code> ,{id:'review', header: "Acknowledge Review", width: 80, sortable: true, dataIndex: 'review', renderer: function(value, meta, record, id){                            
                                var id = Ext.id();
                                var content = record.data['status'];             
                                if(content.match(/^(VIEWED)$/i))
                                {
                                    var checkBox = new Ext.form.Checkbox({
                                        checked: false                                      
                                    }); //.render(document.body, id);
                                    //checkBox.applyTo('review');
                                    return checkBox;
                                }
                            }} 
  </code></pre>