请求帮助，Extjs treegrid 数据显示问题

zhiwu891123 2010-04-17 10:21:34

大家好，我是新手，最近遇到一个Extjs的问题，由于项目需要用到Extjs 但是我从来没接触过，现在要做一个页面, 用columntree 或者 treegrid 但是无法动态生成数据，请各位大侠帮帮忙，告诉我怎么实现，小弟在此万分感谢！
Ext.onReady(function() {
Ext.QuickTips.init();

var toolbar = new Ext.Toolbar({
height: 30,
hideBorders: true,
buttons: [{
text: ' 新建机构',
icon: 'img/icon042a2.gif'

}, {
text: ' 编辑',
icon: 'img/icon042a4.gif'
}, {
text: ' 删除',
icon: 'img/icon042a3.gif'
}]
});

var sm = new Ext.grid.CheckboxSelectionModel();

var tree = new Ext.ux.tree.TreeGrid({

width: 900,
height: 300,
renderTo: Ext.getBody(),
enableDD: true,
tbar: toolbar,
columns: [

{
header: 'Task',
dataIndex: 'task',
width: 300
}, {
header: 'Duration',
width: 300,
dataIndex: 'duration',
align: 'center',
sortType: 'asFloat',
tpl: new Ext.XTemplate('{duration:this.formatHours}',
{
formatHours: function(v) {
if (v < 1) {
return Math.round(v * 60) + ' mins';
} else if (Math.floor(v) !== v) {
var min = v - Math.floor(v);
return Math.floor(v) + 'h ' + Math.round(min * 60) + 'm';
} else {
return v + ' hour' + (v === 1 ? '' : 's');
}
}
})
}, {
header: 'Assigned To',
width: 300,
dataIndex: 'user'
}],
dataUrl: 'treegrid-data.json'
});

treegrid-data.json文件：
[{
task:'Project: Shopping',
duration:13.25,
user:'Tommy Maintz',
iconCls:'task-folder',
expanded: true,
children:[{
task:'Housewares',
duration:1.25,
user:'Tommy Maintz',
iconCls:'task-folder',
children:[{
task:'Kitchen supplies',
duration:0.25,
user:'Tommy Maintz',
leaf:true,
iconCls:'task'
},{
task:'Groceries',
duration:.4,
user:'Tommy Maintz',
leaf:true,
iconCls:'task'
},{
task:'Cleaning supplies',
duration:.4,
user:'Tommy Maintz',
leaf:true,
iconCls:'task'
},{
task: 'Office supplies',
duration: .2,
user: 'Tommy Maintz',
leaf: true,
iconCls: 'task'
}]
}, {
task:'Remodeling',
duration:12,
user:'Tommy Maintz',
iconCls:'task-folder',
expanded: true,
children:[{
task:'Retile kitchen',
duration:6.5,
user:'Tommy Maintz',
leaf:true,
iconCls:'task'
},{
task:'Paint bedroom',
duration: 2.75,
user:'Tommy Maintz',
iconCls:'task-folder',
children: [{
task: 'Ceiling',
duration: 1.25,
user: 'Tommy Maintz',
iconCls: 'task',
leaf: true
}, {
task: 'Walls',
duration: 1.5,
user: 'Tommy Maintz',
iconCls: 'task',
leaf: true
}]
},{
task:'Decorate living room',
duration:2.75,
user:'Tommy Maintz',
leaf:true,
iconCls:'task'
},{
task: 'Fix lights',
duration: .75,
user: 'Tommy Maintz',
leaf: true,
iconCls: 'task'
}, {
task: 'Reattach screen door',
duration: 2,
user: 'Tommy Maintz',
leaf: true,
iconCls: 'task'
}]
}]
},{
task:'Project: Testing',
duration:2,
user:'Core Team',
iconCls:'task-folder',
children:[{
task: 'Mac OSX',
duration: 0.75,
user: 'Tommy Maintz',
iconCls: 'task-folder',
children: [{
task: 'FireFox',
duration: 0.25,
user: 'Tommy Maintz',
iconCls: 'task',
leaf: true
}, {
task: 'Safari',
duration: 0.25,
user: 'Tommy Maintz',
iconCls: 'task',
leaf: true
}, {
task: 'Chrome',
duration: 0.25,
user: 'Tommy Maintz',
iconCls: 'task',
leaf: true
}]
},{
task: 'Windows',
duration: 3.75,
user: 'Darrell Meyer',
iconCls: 'task-folder',
children: [{
task: 'FireFox',
duration: 0.25,
user: 'Darrell Meyer',
iconCls: 'task',
leaf: true
}, {
task: 'Safari',
duration: 0.25,
user: 'Darrell Meyer',
iconCls: 'task',
leaf: true
}, {
task: 'Chrome',
duration: 0.25,
user: 'Darrell Meyer',
iconCls: 'task',
leaf: true
},{
task: 'Internet Exploder',
duration: 3,
user: 'Darrell Meyer',
iconCls: 'task',
leaf: true
}]
},{
task: 'Linux',
duration: 0.5,
user: 'Aaron Conran',
iconCls: 'task',
children: [{
task: 'FireFox',
duration: 0.25,
user: 'Aaron Conran',
iconCls: 'task',
leaf: true
}, {
task: 'Chrome',
duration: 0.25,
user: 'Aaron Conran',
iconCls: 'task',
leaf: true
}]
}]
}]

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