如何重新配置​​extjs 3.4 Grid

Question

！我正在尝试重新配置网格。它运行正常，但当我点击客户，然后它显示错误。如果我使用xtemplate覆盖它，请告诉我如何重新配置​​网格。

    var data1 = [
    ['1','Sanjay'],              
    ['2','Vinod']                
    ];  
    var customersStore = new Ext.data.ArrayStore({
    fields: ['id', 'cust_name'],
    data: data1
    }); 
    var customersColumnModel = new Ext.grid.ColumnModel([
    { header: "ID", width: 40, dataIndex: 'id' },
    { header: "Cust Name", width: 130, dataIndex: 'cust_name' },
    ]);
    var data2 = [
    [1,'border',],          
    [2,'hobit',],           
    ];
    var moviesStore = new Ext.data.ArrayStore({
    fields: ['id', 'title'],
    data: data2
    }); 
    var moviesColumnModel = new Ext.grid.ColumnModel([
    { header: "ID", width: 130, renderer:id, dataIndex: 'id'},
    // { header: "Title", width: 130, dataIndex: 'title'}
    ]);
    Ext.onReady(function() {
    var new_grid = new Ext.grid.GridPanel({
    title: 'Customers',
    id:'detailPanel',
    store: customersStore,
    cm: customersColumnModel,   
    renderTo: Ext.getBody(),
    width: 750,
    height: 500,
    tbar: {
    items: [
    {       
    text: 'Customers',
    handler: function() 
    {
    new_grid.setTitle('Customers'); 
    new_grid.reconfigure(customersStore,customersColumnModel); 
    customersStore.load();
    }
    },
    '-',
    { 
    text: 'Movies',
    handler: function() 
    {
    new_grid.setTitle('Movies');    
    var detailPanel = Ext.getCmp('detailPanel');            
    tpl.overwrite(detailPanel.body);                       
    }       
    }       
    ]
    },  
    }); 
    var tpl = new Ext.XTemplate('hello');

如果我使用xtemplate覆盖它，请告诉我如何重新配置​​网格。