我正在将我的ExtJs3应用程序迁移到ExtJs4。
在ExtJs3中,我有一个树状网格,其中有一个加载器来加载树数据,如下所示:
loader: new Ext.tree.TreeLoader({
dataUrl: 'Department/DepartmentTree',
nestedRoot: 'Data.items'
})
所以我试图在ExtJs4中创建一个treeStore,如下所示:
var store = Ext.create('Ext.data.TreeStore', {
model: 'DepartmentTreeModel',
folderSort: true,
proxy: {
type: 'ajax',
url: 'Department/DepartmentTree',
reader: {
type: 'json',
root: 'Data.items'
}
}
});
在上述商店
Cannot read property 'items' of undefined
上调用load函数时出现错误。JSON响应如下所示:
{
"Data":{
"__type":"ListWrapperOfDepartmentTreeNodewnEzJCii:#PortalMvc.Global.Classlibrary.Model.Ui.JSONWrappers",
"items":[{
"ActualHeadcount":0,
"Headcount":0,
"Leavers":0,
"ParentId":"~~",
"Starters":0,
"children":[{
"ActualHeadcount":0,
"Headcount":0,
"Leavers":0,
"ParentId":"!#",
"Starters":0,
"children":[{
"ActualHeadcount":0,
"Headcount":0,
"Leavers":0,
"ParentId":"*w",
"Starters":0,
"children":[{
"ActualHeadcount":0,
"Headcount":0,
"Leavers":0,
"ParentId":"*z",
"Starters":0,
"children":[],
"iconCls":"admin_button",
"id":"*{",
"leaf":true,
"text":"Parking1_subtree1"
}]
}]
}]
}]
}
}
最佳答案
它期望对于每个子节点集重复根。因此,对于“ child ”,它也在尝试读取“Data.items”。
如果您不能更改数据结构,则根也可以是一个函数,例如:
root: function(o) {
if (o.Data) {
return o.Data.items;
} else {
return o.children;
}
}
关于javascript - ExtJs4 Json TreeStore?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/6263380/