EasyUI datagrid在insertRow时如果有formatter会出现EasyUI TypeError: rowData.assertEntity is undefined

{field:'assertEntity',title:'资产名称',editor:{
					type:'validatebox',
					options:{
						required:true
					}
				},formatter:function(value,rowData,rowIndex){
		        	return rowData.assertEntity.assertName;
		        },30},  

 把上面红色部分保持一致后

$('#tt').datagrid('insertRow',{
						index:0,row:{
							faultId:'0',
							assertEntity:'',
							faultFindDate:'',
							faultFindPeople:'',
							faultStatus:'',
							faultType:''
						}
					});
					$('#tt').datagrid('selectRow',0);
					 $('#tt').datagrid('beginEdit',0);

 就不会再出错了