Ext4.2 TreeStore data(children) 확장 속성

	Ext.define('treeModel', {
		extend: 'Ext.data.Model',
		fields: [ 
	         {name: 'text', type: 'string'}, // 
	         {name: 'url', type: 'string'}
         ] 
	});

var store = Ext.create('Ext.data.TreeStore', {
			nodeParam: 'id',	// id node 
			//model: 'treeModel',
			//autoLoad: false, 
			//  
			fields: [ 
		         {name: 'text', type: 'string'}, // ?
		         {name: 'url', type: 'string'}
	            ],
			proxy: {
	            type: 'ajax',
	            url: 'resource/getListByPU.json',
	            reader: {
					type: 'json',
	        		root: 'extTreeVoList' //josn 
	         	} 
	        },
		    root: {
		    	text: ' ',
	            id: 0,
		        expanded: true
		    }
//	        ,
//		    sorters: [{
//	            property: 'text',
//	            direction: 'ASC'
//	        }]
		});

var tree = Ext.create('Ext.tree.Panel', {
	        	//id: extTreeVo.id, //id 
	        		title: 'text',
	                store: store,
	                rootVisible:false,	                
	                useArrows: false,
	                listeners : {  
	                    'itemclick' : function(view,record){  
	                        if(record.data.leaf){  
	                            alert(record.data.id+record.data.url);
	                            alert(record.raw.url); // raw 
	                        }else{  
//	                            if(record.data.expanded){  
//	                                view.collapse(record);  
//	                            }else{  
//	                                view.expand(record);  
//	                            }  
	                        }  
	                    }  
	                }  
	            });

data
	
	Object { id=20,  text=" ",  parentId=10,   ...}
id
	
	20
text
	
	" "
parentId
	
	10
index
	
	0
depth
	
	1
expanded
	
	null
expandable
	
	true
checked
	
	null
leaf
	
	true
cls
	
	"file"
iconCls
	
	""
icon
	
	""
root
	
	false
isLast
	
	false
isFirst
	
	true
allowDrop
	
	true
allowDrag
	
	true
loaded
	
	false
loading
	
	false
href
	
	""
hrefTarget
	
	""
qtip
	
	""
qtitle
	
	""
qshowDelay
	
	0
children
	
	null