Javascript ExtJS4类加载失败

Javascript ExtJS4类加载失败,javascript,extjs,extjs4,Javascript,Extjs,Extjs4,我有类似的代码: Ext.define('GG.view.Workbench', { extend: 'Ext.container.Viewport', layout: 'fit', items: [ { xtype: 'container', layout: 'border', items: [ { region

我有类似的代码:

Ext.define('GG.view.Workbench', {
    extend: 'Ext.container.Viewport',
    layout: 'fit',
    items: [
        {
            xtype: 'container',
            layout: 'border',
            items: [
                {
                    region: 'center',
                    items: [
                        Ext.create('GG.view.Foo')
                    ]
                },
                {
                    region: 'south',
                    items: [
                        Ext.create('GG.view.Bar')
                    ]
                }
            ]
        }
    ],

    initComponent: function() {
        this.callParent(arguments);
    }
});
当两个
Ext.create
调用放在那里时,代码不起作用

这是我在Chrome上得到的:

Uncaught TypeError: object is not a function
(anonymous function)
Ext.ClassManager.instantiateext-debug.js:6428
(anonymous function)ext-debug.js:2414
(anonymous function)

我应该如何使用这个
Ext.create

您正在过度嵌套,您必须在每次创建类时都将执行的方法中执行该操作

Ext.define('GG.view.Workbench', {
    extend: 'Ext.container.Viewport',
    layout: 'border',

    initComponent: function() {
        var me = this;

        Ext.apply(me, {
            items : me.buildItems()
        });

        me.callParent(arguments);
    },

    buildItems: function() {
        return [
            {
                region: 'center',
                items: [
                    Ext.create('GG.view.Foo')
                ]
            },
            {
                region: 'south',
                items: [
                    Ext.create('GG.view.Bar')
                ]
            }
        ];
    }
});