Stackoverflow 中充斥着与此非常相似的问题。我研究了所有这些,但没有找到明确的解决方案。但是,提供的大多数答案都为我指明了正确的方向。我会尽我最大的努力将所有这些建议放在一起并向其他人说明这一点:
模型:(仅显示将在所有 JSON 响应中出现的 2 个字段。仍将被覆盖)
Ext.define('RTS.model.TestsModel', {
extend: 'Ext.data.Model',
alias: 'model.TestsModel',
fields: [
{
name: 'poll_date'
},
{
name: 'poller'
}
]
});
商店:
Ext.define('RTS.store.TestsStore', {
extend: 'Ext.data.Store',
alias: 'store.TestsStore',
model: 'RTS.model.TestsModel',
constructor: function(cfg) {
var me = this;
cfg = cfg || {};
me.callParent([Ext.apply({
autoLoad: false,
proxy : {
type : 'ajax',
url : 'tests.php',
reader : {
type : 'json',
root : 'tests',
successProperty : 'success'
}
},
storeId: 'tests-store'
}, cfg)]);
}
});
查看:(列将在每个 JSON 响应中定义)
Ext.define('RTS.view.TestsView', {
extend: 'Ext.grid.Panel',
alias: 'widget.TestsView',
id: 'tests-view',
title: 'Tests',
emptyText: '',
store: 'TestsStore',
initComponent: function() {
var me = this;
Ext.applyIf(me, {
viewConfig: {
},
columns: [
]
});
me.callParent(arguments);
}
});
控制器:(控制器会根据 JSON 响应执行所有强制视图和模型更改的工作)。
Ext.define('RTS.controller.TestsController', {
extend: 'Ext.app.Controller',
alias: 'controller.TestsController',
stores: [
'TestsStore'
],
models: [
'TestsModel'
],
views: [
'TestsView'
],
init: function(application) {
// When store changes, trigger an event on grid
// to be handled in 'this.control'.
// NOTE : Ext JS does not allow control of
// non-component events.
// Ext JS 4.2 beta will allow the controller
// to detect non-component changes and handle them
var testsStore = this.getStore('TestsStore');
testsStore.on("metachange", metaChanged, this);
function metaChanged(store, meta) {
var grid = Ext.ComponentQuery.query('TestsView')[0];
grid.fireEvent('metaChanged', store, meta);
};
this.control({
"TestsView": {
metaChanged: this.handleStoreMetaChange
}
});
},
/**
* Will update the model with the metaData and
* will reconfigure the grid to use the
* new model and columns.
*/
handleStoreMetaChange: function(store, meta) {
var testsGrids = Ext.ComponentQuery.query('TestsView')[0];
testsGrids.reconfigure(store, meta.columns);
}
});
JSON 响应:
您的 json 响应必须包含“元数据”属性。它应该像在静态模型和通常定义为显示字段的视图上一样定义字段。
{
"success": true,
"msg": "",
"metaData": {
"fields": [
{
"name": "poller"
},
{
"name": "poll_date"
},
{
"name": "PING",
"type": "int"
},
{
"name": "SNMP",
"type": "int"
},
{
"name": "TELNET",
"type": "int"
},
{
"name": "SSH",
"type": "int"
},
{
"name": "all_passed"
}
],
"columns": [
{
"dataIndex": "poller",
"flex": 1,
"sortable": false,
"hideable": false,
"text": "Poller"
},
{
"dataIndex": "poll_date",
"flex": 1,
"sortable": false,
"hideable": false,
"text": "Poll Date"
},
{
"dataIndex": "PING",
"flex": 1,
"sortable": false,
"hideable": false,
"text": "PING",
"renderer": "RenderFailedTests"
},
{
"dataIndex": "SNMP",
"flex": 1,
"sortable": false,
"hideable": false,
"text": "SNMP",
"renderer": "RenderFailedTests"
},
{
"dataIndex": "TELNET",
"flex": 1,
"sortable": false,
"hideable": false,
"text": "TELNET",
"renderer": "RenderFailedTests"
},
{
"dataIndex": "SSH",
"flex": 1,
"sortable": false,
"hideable": false,
"text": "SSH",
"renderer": "RenderFailedTests"
},
{
"dataIndex": "all_passed",
"flex": 1,
"sortable": false,
"hideable": false,
"text": "All Passed",
"renderer": "RenderFailedTests"
}
]
},
"tests": [
{
"poller": "CHI",
"poll_date": "2013-03-06",
"PING": "1",
"SNMP": "0",
"TELNET": "1",
"SSH": "0",
"all_passed": "0"
},
{
"poller": "DAL",
"poll_date": "2013-03-06",
"PING": "1",
"SNMP": "0",
"TELNET": "1",
"SSH": "0",
"all_passed": "0"
},
{
"poller": "CHI",
"poll_date": "2013-03-04",
"PING": "1",
"SNMP": "0",
"TELNET": "1",
"SSH": "0",
"all_passed": "0"
},
{
"poller": "DAL",
"poll_date": "2013-03-04",
"PING": "1",
"SNMP": "0",
"TELNET": "1",
"SSH": "0",
"all_passed": "0"
},
{
"poller": "CHI",
"poll_date": "2013-03-01",
"PING": "1",
"SNMP": "0",
"TELNET": "1",
"SSH": "0",
"all_passed": "0"
}
]
}