如何显示嵌套对象与不同的存储从ExtJS网格

Question

我想对Ext Grid上父对象的子对象进行REST操作。我需要使用rowExpander而不是rowWidget，因为我使用的是现代工具包。

这是我的JSON数据样本从我的API:

{
"pagination": {
"page": 1,
"limit": 20,
"total": 1,
"hasPreviousPage": false,
"hasNextPage": false
},
"data": [
{
"id": 2,
"customer": "Mark",
"dateRented": "2021-02-09T21:18:40.667",
"movieRentals": [
{
"id": 5,
"rentalDetailDtoId": 2,
"movie": "Shingeki no Kyojin",
"dateReturned": null
},
{
"id": 6,
"rentalDetailDtoId": 2,
"movie": "Insidous 2",
"dateReturned": null
}
]
},
{
"id": 1,
"customer": "Samuel",
"dateRented": "2021-02-09T21:17:18.403",
"movieRentals": [
{
"id": 3,
"rentalDetailDtoId": 1,
"movie": "Home Alone",
"dateReturned": null
},
{
"id": 4,
"rentalDetailDtoId": 1,
"movie": "Neighbors",
"dateReturned": null
}
]
}
]
}

我想显示它每个客户，我有一个REST动作的POST上的movieRentals对象。我想使用RowExpander，但我不确定如何使其工作。

这是我当前的ExtJS网格代码:

Ext.define('Vidly.view.rental.DisplayRentalsView', {
extend: 'Ext.grid.Grid',
xtype: 'displayrentalsview',
reference: 'rentallist',
title: 'Rental List',
controller: 'displayrentalsviewcontroller',
viewModel: 'rentalsviewmodel',
reference:'displayrentalsviewgrid',
selType: 'rowmodel',
selModel:
{
mode: 'SINGLE'
},
viewConfig:
{
stripeRows: true
},
listeners: {
selectionchange: 'onSelectionChange',
show: 'onShow',
},
bind: {
store: '{RentalListStore}'
},
itemConfig: {
viewModel: true 
},
plugins: {
pagingtoolbar: true
},
items: [
{
xtype: 'container',
docked: 'top',
items: [
{
docked: 'left',
xtype: 'button',
ui: 'decline',
itemId: 'returnRental',
text: 'Return Rental',
reference: 'btnReturnRental',
handler: 'onReturnClick',
disabled: true,
}
]
},
],
columns: [
{
text: "Customer",
flex: 1,
dataIndex: 'customer',
editor:
{
allowBlank: false
},
},
{
text: "Movie",
flex: 1,
dataIndex: 'movieRental',
editor:
{
allowBlank: false
},
},
{
text: "Date Rented",
flex: 1,
dataIndex: 'dateRented',
editor:
{
allowBlank: false
},
renderer: function (value, metaData, record) {
if (value != null && value != "") {
var dateRented = new Date(Date.parse(value))
return Ext.Date.format(dateRented, 'm/d/Y')
}
else {
return "";
}
}
},
{
text: "Date Returned",
flex: 1,
dataIndex: 'dateReturned',
editor:
{
allowBlank: false
},
renderer: function (value, metaData, record) {
if (value != null && value != "") {
var dateRented = new Date(Date.parse(value))
return Ext.Date.format(dateRented, 'm/d/Y')
}
else {
return "";
}
}
}
],
});

Answer 1

当你在ExtJs中询问问题时，提供一个小提琴总是好的

我在这里提供了一个小提琴，我希望这对你有帮助

https://fiddle.sencha.com/视图/editor&小提琴/3 bpk

Ext.application({
name: 'Fiddle',
launch: function () {
const store = Ext.create('Ext.data.Store', {
data: [{
"id": 2,
"customer": "Mark",
"dateRented": "2021-02-09T21:18:40.667",
"movieRentals": [{
"id": 5,
"rentalDetailDtoId": 2,
"movie": "Shingeki no Kyojin",
"dateReturned": null
}, {
"id": 6,
"rentalDetailDtoId": 2,
"movie": "Insidous 2",
"dateReturned": null
}]
}, {
"id": 1,
"customer": "Samuel",
"dateRented": "2021-02-09T21:17:18.403",
"movieRentals": [{
"id": 3,
"rentalDetailDtoId": 1,
"movie": "Home Alone",
"dateReturned": null
}, {
"id": 4,
"rentalDetailDtoId": 1,
"movie": "Neighbors",
"dateReturned": null
}]
}]
});
Ext.create('Ext.grid.Grid', {
store: store,
plugins: {
rowexpander: true
},
height: 500,
width: '100%',
itemConfig: {
body: {
tpl: '<ul>' +
'<tpl foreach="movieRentals">' +
'<li>Movie: {movie}</li>' +
'</tpl>' +
'</ul>'
}
},
columns: [{
text: 'Name',
dataIndex: 'customer',
width: 200
}, {
text: 'dateRented',
dataIndex: 'dateRented',
width: 250
}],
layout: 'fit',
fullscreen: true
});
}
});

顺便说一下，把那些渲染器移到你的viewController中。重复的代码总是丑陋的:-)

Answer 2

好的，您应该更深入地了解https://docs.sencha.com/extjs/7.3.1/modern/Ext.grid.Row.html#events

itemConfig: {
body: {
tpl: '<p>Hello World</p>',
listeners: {
beforeshow: sender => {
console.log(sender);
// Here you can tell your record to fetch data
}
}
}
}

请随意摆弄小提琴https://fiddle.sencha.com/小提琴/3 bq5&查看/编辑