如何在我的例子中以extjs方式重置链式组合框?
考虑这两个组合框:
{
xtype: 'combo',
bind:{
store: '{contacts}'
},
reference: 'contactsCombo',
displayField: 'name',
name: 'contact',
typeAhead: false,
editable: false,
fieldLabel: 'Contact',
emptyText: 'Select a contact...',
anchor: '95%',
listeners: {
change: 'onSelectChange'
},
},
{
xtype: 'combo',
name: 'phone',
reference: 'phonesCombo',
fieldLabel: 'Phone',
displayField: 'number',
valueField:'id',
hiddenName: 'id',
emptyText: 'Select a phone...',
bind: {
store: '{contactsCombo.selection.phoneNumbers}'
},
anchor: '95%'
}
相应的模型定义:
Ext.define('AppsBoard.model.Contact', {
extend: 'Ext.data.Model',
fields: [
'id', 'name'
],
});
Ext.define('AppsBoard.model.ViewModel', {
extend: 'Ext.app.ViewModel',
alias: 'viewmodel.related',
stores: {
contacts: {
model: 'AppsBoard.model.Contact',
autoLoad: true,
proxy: {
type: 'ajax',
url: 'contacts.json',
reader: {
type: 'json',
rootProperty: 'data'
}
}
}
}
});
Ext.define('AppsBoard.model.PhoneNumber', {
extend: 'Ext.data.Model',
fields: [
'id',
{
name: 'contact_id',
type: 'int',
reference: {
type: 'AppsBoard.model.Contact',
inverse: {
role: 'phoneNumbers'
}
}
},
'number'
],
proxy: {
type: 'MyProxy',
reader: {
type: 'json'
}
}
});
Ext.define('AppTest.store.MyProxy', {
extend: 'Ext.data.proxy.Proxy',
alias: 'proxy.MyProxy',
read: function (operation) {
var resultSet = {
1: [{
"id": 1,
"contact_id": 1,
"number": "6045551212"
},
{
"id": 2,
"contact_id": 1,
"number": "8009996541"
}],
2: [
{
"id": 3,
"contact_id": 2,
"number": "1232131233"
}
]
};
operation.setResultSet(this.getReader().read(resultSet[operation.getFilters()[0].getValue()]));
operation.setSuccessful(true);
},
erase: function (operation) {
console.log(operation);
}
});
我的问题是当我切换我的父级Combobox时,它的相关子组合框显示了valueField而不是displayField。
答案 0 :(得分:2)
你可以在你的小提琴中看到它不使用valueField,但它保留了价值。
由于商店已经更改,现在该值与新商店中的任何内容都没有关联,因此您只能看到该值。
您可以通过设置 forceSelection
来清理该框{
xtype: 'combo',
name: 'phone',
reference: 'phonesCombo',
fieldLabel: 'Phone',
displayField: 'number',
valueField:'id',
hiddenName: 'id',
emptyText: 'Select a phone...',
forceSelection: true,
bind: {
store: '{contactsCombo.selection.phoneNumbers}'
},
anchor: '95%'
}
只要你知道那里不会有重复ID