Tree empty folder show root node

[dadaking]

Hello,

I try to show in a Tree panel a Files System.
I feed my tree with json data and it's work perfectly!

But when I have an empty folder, the tree folder (when it's deploy) show me the complete tree again.
In my server I send a json file which doesn't have children properties.

Anybody has an idea for help me?

Thanks!

David

[scottmartin]

Does it help to call tree.removeAll()?

Scott.

[dadaking]

Thanks for your answer.

But I don't know how use it. There is my code for the tree:

Ext.onReady(function () {
        var treeStore = Ext.create('Ext.data.TreeStore', {
            proxy: {
                type: 'ajax',
                url: '/File/Tree'
            },
            root: {
                text: 'Files root',
                id: 'root',
                expanded: true
            }
        });
        var treeUp = Ext.create('Ext.tree.Panel', {
            id: 'TreeFileSystem',
            title: 'TEST',
            useArrows: true,
            store: treeStore,
            rootVisible: false,
            renderTo: 'Tree',
            height: 350,
            listeners: {
                itemClick: function (view, record) {
                }
            }
        });
    });

and there is an example of my json code

[
	{"cls":"first-level","expanded":"false","children":[
		{"cls":"first-level","expanded":"false","children":[
			{"leaf":"true","text":"..."},
			{"leaf":"true","text":"..."}
			],"text":"..."}
		],"text":"..."},
	{"text":"..."}
]

When I look the console of firebug, I can see, when I open the empty folder, the tree call again the store withouth attribute.console.JPG
And there is a screenshot of the tree.
tree.JPG

[dadaking]

Nobody have an idea?

EDIT: I found the solution, I build my JSON with this achitecture :

{"path":"...","cls":"first-level","expanded":"false","children":[],"text":"..."}

The cls and children:[] solve the problem.