无法在EXtjs中将XType网格添加到div

如何解决无法在EXtjs中将XType网格添加到div

我正在尝试在dataView中添加表单面板，我在ItemTPL中写了div，并且在该div中我想调用Extjs表单面板，但是当我可以调用extjs表单面板时，出现以下错误 “ [W] XTemplate评估例外：无法读取null的属性“ dom””

getGrid: function () {
                Ext.onReady(function(){

                    Ext.create('Ext.form.Panel',{
                        title: 'Support Ticket Request',width: 650,height: 500,renderTo: 'myForm',style: 'margin: 50px',items: [{
                            xtype: 'container',layout: 'hBox',items: [{
                                xtype: 'textfield',fieldLabel: 'First Name',name: 'FirstName',labelAlign: 'top',cls: 'field-margin',flex: 1
                            },{
                                xtype: 'textfield',fieldLabel: 'Last Name',name: 'LastName',flex: 1
                            }]
                        }]
                    });

                });
                
                
                return '<div id="myForm"></div>';

                //return '<img src="resources/images/img2.jpg" class="shared-img" alt="Smiley face">';
            },

'<div class="contents-wrap">' +
                        '<div class="shared-by"><a href="#">{name}</a> shared an image</div>' +
                        '{[this.getGrid()]}' +
                    '</div>'