easyui datagrid 绑定json对象属性的属性

function dgDevice_datagrid() {
            $(‘#dgDevice‘).datagrid({
                url: ‘DeviceList.ashx?action=GetDevices‘,
                toolbar: ‘#tb1‘,
                width: 540,
                singleSelect: true,
                remoteSort: true,
                sortName: ‘SaleDate‘,
                sortOrder: ‘desc‘,
                rownumbers: true,
                columns: [[
                    { title: ‘设备ID‘, field: ‘DeviceID‘, width: 190, align: ‘center‘ },
                    { title: ‘出厂日期‘, field: ‘ExFactoryDate‘, width: 110, align: ‘center‘,
                        formatter: function (val) {
                            return formatDate(val, "yyyy-MM-dd");
                        }
                    },
                    { title: ‘售卖日期‘, field: ‘SaleDate‘, width: 110, align: ‘center‘,
                        formatter: function (val) {
                            return formatDate(val, "yyyy-MM-dd");
                        }
                    },
                    { title: ‘账户‘, field: ‘AccountName‘, width: 80, align: ‘center‘,
                        formatter: function (value, row, index) {
                            return row.Account.AccountName;
                        }
                    }
                ]],
                onSelect: function (rowIndex, rowData) {
                    dgSensor_datagrid(rowData.DeviceID);
                }
            });
        }