Extjs4 treepanel reload and expand

[siva565]

Hi,
I'm using Extjs4 treepanel with Json data.I want reload the treepanel and need expand tree menu to specified node.
I'm using the following code. Please let me know how do this.



//Define tree store


var store = Ext.create('Ext.data.TreeStore', {
proxy: {
type: 'ajax',
url: 'my_tree.php',
},

noCache: false
});


// Treepanel
var treePanel = Ext.create('Ext.tree.Panel', {
id: 'mytree',
renderTo: 'tree_div',
height: 400,
bodyBorder: false,
border: false,
singleExpand: true,
rootVisible: false,
store: store,
useArrows: true
});


//Reload tree
function reload_tree(){
var tree_panel = Ext.getCmp('mytree');
tree_panel.enable();
tree_panel.getLoader().dataUrl = 'my_tree.php';
tree_panel.getLoader().load(tree_panel.root);
//Expand tree node
tree_panel.getLoader().on('load', function(loader, node){
tree_panel.getNodeById(nodeid).expand();
//here node id is tree menu nodeid
});
}

Thanks in advance

[mitchellsimoens]

Try


load({
node : tree_panel.root
})