Extjs 4 树面板错误
我为我的应用程序使用一个简单的树面板，有时它会停止扩展和取消扩展节点并出现下一个错误：
records[i] is undefined
http://localhost:8080/extjs/ext-all-debug.js
Line 58763
我的代码非常简单：
var tree_store = Ext.create('Ext.data.TreeStore', {
id: 'tree_store_id',
proxy: {
type: 'ajax',
url: 'tree_data.json?object_id=' + Ext.getCmp('object_id').value
},
root: {
text: 'Парки',
id: 'objectId',
expanded: true,
iconCls: 'tree-cls-root'
}
});
var tree = Ext.create('Ext.tree.Panel', {
id: 'stock_tree_id',
store: tree_store,
autoWidth: true,
height: 600,
autoScroll: true,
renderTo: document.getElementById('stock_tree_div'),
useArrows: true,
border: false,
rootVisible: true,
listeners: {
itemclick: function (view, rec, item, index, eventObj) {
document.getElementById("stock_div").innerHTML = rec.data.text;
}
}
});
有人遇到过这个问题吗？
I use a simple treepanel for my application, and sometimes it stops expanding and unexpanding nodes with the next error:
records[i] is undefined
http://localhost:8080/extjs/ext-all-debug.js
Line 58763
My code is quite simple:
var tree_store = Ext.create('Ext.data.TreeStore', {
id: 'tree_store_id',
proxy: {
type: 'ajax',
url: 'tree_data.json?object_id=' + Ext.getCmp('object_id').value
},
root: {
text: 'Парки',
id: 'objectId',
expanded: true,
iconCls: 'tree-cls-root'
}
});
var tree = Ext.create('Ext.tree.Panel', {
id: 'stock_tree_id',
store: tree_store,
autoWidth: true,
height: 600,
autoScroll: true,
renderTo: document.getElementById('stock_tree_div'),
useArrows: true,
border: false,
rootVisible: true,
listeners: {
itemclick: function (view, rec, item, index, eventObj) {
document.getElementById("stock_div").innerHTML = rec.data.text;
}
}
});
Has anyone faced this problem?
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评论（2）
可能是你的 JSON 有问题。它是否包括以下内容：
？
May be it's problem at your JSON. Is it include something like:
?
就我而言，这是由于服务器响应 json 包含父节点作为第一个元素而引起的。
因此，当我扩展节点 123 时，服务器返回节点 123 本身，然后返回它的所有子节点。
In my case this was caused by the fact that server response json contained parent node as a first element.
So when I was expanding node 123, server was returning node 123 itself and then all of it's children.