[英]Extjs 5, data model association & load nested data
試圖讓這項工作....
我想在兩個對象模型上加載嵌套數據
Ext.application({
name : 'MyApp',
launch : function() {
Ext.define('MyApp.model.Address', {
extend: 'Ext.data.Model',
entityName: 'Address',
fields: [
{
name: 'id',
type: 'int'
},
{
name: 'addressLine',
type: 'string'
},
{
name: 'city',
type: 'string'
},
{
name: 'created',
type: 'date',
dateFormat: 'time',
persist: false
}
]
});
Ext.define('MyApp.model.User', {
extend: 'Ext.data.Model',
entityName: 'User',
fields: [
{
name: 'id',
type: 'int'
},
{
name: 'address',
reference: 'Address'
},
{
name: 'name',
type: 'string'
},
{
name: 'lastname',
type: 'string'
},
{
name: 'created',
type: 'date',
dateFormat: 'time',
persist: false
}
]
});
var user = new MyApp.model.User({
"id": 1,
"name": "Pedro",
"lastname": "Carbonell",
"address": {
"id": 1,
"addressLine": "Bailen 22",
"city": "Barcelona",
"created": 1420668866000
},
"created": 1420668866000
});
console.info(user);
console.info(user.getAddress());
}});
創建用戶時沒有錯誤,但是當我通過user.getAddress()訪問關聯數據時,它返回了一個異常:
Uncaught Error: The model ID configured in data ("[object Object]") has been rejected by the int field converter for the id fieldext-all-debug.js
嘗試在模型定義上定義代理,如內存或localstorage,但結果是相同的。
Ext fiddle: https : //fiddle.sencha.com/#fiddle/h2d
任何幫助將不勝感激!
解決了,但只找到這個解決方案:當使用loadRawData時......
var store = new Ext.data.Store({
model: MyApp.model.User
});
store.loadRawData({
"id": 1,
"name": "Pedro",
"lastname": "Carbonell",
"address": {
"id": 1,
"addressLine": "Bailen 22",
"city": "Barcelona",
"created": 1420668866000
},
"created": 1420668866000
});
console.info(store.first());
console.info(store.first().getAddress());
這個新小提琴的樣本: https : //fiddle.sencha.com/#fiddle/h4e
你是對的,ext有點片狀,非常....
我一直在玩你的小提琴中的代碼,但是還沒有能夠以正式的方式使用該協會。
我使用此代碼模擬了功能:
Ext.define('MyApp.model.User', {
extend: 'Ext.data.Model',
fields: [{
name: 'id',
type: 'int'
}, {
name: 'name',
type: 'string'
}, {
name: 'lastname',
type: 'string'
}, {
name: 'created',
type: 'date',
dateFormat: 'time',
persist: false
}],
getAddress: function() {
if ('undefined' === this.data.address) {
return null;
}
return Ext.create('Address', this.data.address);
}
});
基本上我已經刪除了關聯並創建了一個自定義函數來創建基於傳入的原始數據的模型記錄。如果地址數據不存在而不是null,你也可以返回一個新的空模型,我使用null作為更容易確定您是否擁有有效的地址記錄。
正如已經提到的 - 這不是官方的做法,我會再次與小提琴玩,並在找到后發布更好的解決方案,這可能有助於此期間。
使用原始代碼,我做了一些修改,現在它似乎工作。
Ext.application({
name : 'MyApp',
launch : function() {
Ext.define('MyApp.model.Address', {
extend: 'Ext.data.Model',
//entityName: 'Address',
fields: [
{
name: 'id',
type: 'int'
},
{
name: 'addressLine',
type: 'string'
},
{
name: 'city',
type: 'string'
},
{
name: 'created',
type: 'date',
dateFormat: 'time',
persist: false
}
],
hasMany: 'User'
});
Ext.define('MyApp.model.User', {
extend: 'Ext.data.Model',
//entityName: 'User',
fields: [
{
name: 'id',
type: 'int'
},
{
name: 'name',
type: 'string'
},
{
name: 'lastname',
type: 'string'
},
{
name: 'created',
type: 'date',
dateFormat: 'time',
persist: false
}
],
hasMany: { model: 'Address', name: 'Address' }
});
var user = new MyApp.model.User({
"id": 1,
"name": "Pedro",
"lastname": "Carbonell",
"address": {
"id": 1,
"addressLine": "Bailen 22",
"city": "Barcelona",
"created": 1420668866000
},
"created": 1420668866000
});
console.info(user);
console.info(user.data.address);
}
});
這是你想要的那種東西嗎? 我在用戶模型上手動設置地址。 不理想,但它被正確地解釋為記錄。
Ext.define('MyApp.model.Address', {
extend: 'Ext.data.Model',
entityName: 'Address',
fields: [
{
name: 'id',
type: 'int'
},
{
name: 'addressLine',
type: 'string'
},
{
name: 'city',
type: 'string'
},
{
name: 'created',
type: 'date',
dateFormat: 'time',
persist: false
}
]
});
Ext.define('MyApp.model.User', {
extend: 'Ext.data.Model',
entityName: 'User',
fields: [
{
name: 'id',
type: 'int'
},
{
name: 'addressId',
reference: 'Address'
},
{
name: 'name',
type: 'string'
},
{
name: 'lastname',
type: 'string'
},
{
name: 'created',
type: 'date',
dateFormat: 'time',
persist: false
}
]
});
var user = new MyApp.model.User({
"id": 1,
"name": "Pedro",
"lastname": "Carbonell",
"created": 1420668866000
});
var addr = new MyApp.model.Address({
"id": 1,
"addressLine": "Bailen 22",
"city": "Barcelona",
"created": 1420668866000
});
user.setAddress(addr);
console.info(user);
console.info(user.getAddress());
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