Ext4 未找到Model.js

    <script language="javascript" type="text/javascript" src="@Url.Content("~/Scripts/ext-all.js")"></script>
    <link type="text/css" rel="Stylesheet" href="@Url.Content("~/Content/ext-all.css")" />
    <script type="text/javascript">
        Ext.Loader.setConfig({ enabled: true });  
        Ext.require([
                'Ext.grid.*',
                'Ext.data.*',
                'Ext.util.*',
                'Ext.state.*',
                'Ext.form.Panel'
                ]);
        Ext.onReady(function () {
            var isAdd = true; //默认是添加
            Ext.define('NewContent', {
                extend: 'Ext.data.Mode',
                fields:
                [
                'NewsCategoryID',
                'PublicDate',
                'NewsMainTitle',
                 'NewsSubTitle',
                'NewsSummary',
                'NewsListImage',
                 'NewsContent',
                'IsFocusNews',
                'FocusNewsImage',
                 'IsAllowComment',
                'IsPublicToMobileClient',
                'NewsStatus',
                'CreateDatetime'
                ]
            });

            var NewContentStore = Ext.create('Ext.data.Store', {
                model: 'NewContent',
                proxy: { 
 
                    type: 'ajax',
                    url: '@Url.Action("GetNewsContentList", "NewsContent")',
                    reader: {
                        type: 'json',
                        root: "rows"
                    }
                },
                autoLoad: true
            });


            var grid = Ext.create('Ext.grid.Panel', {
                store: NewContentStore,
                id: 'grid',
                layout: 'fit',
                columns: [
                        { header: 'ID', dataIndex: 'NewsCategoryID' },
                                        { header: 'PublicDate', dataIndex: 'PublicDate', align: 'center' },
                                        { header: 'NewsMainTitle', dataIndex: 'NewsMainTitle' },
                                        { header: 'NewsSubTitle', dataIndex: 'NewsSubTitle', align: 'center' },
                                        { header: 'NewsSummary', dataIndex: 'NewsSummary' },
                                        { header: 'NewsListImage', dataIndex: 'NewsListImage', align: 'center' },
                                        { header: 'NewsContent', dataIndex: 'NewsContent' }, 
 
                                        { header: 'IsFocusNews', dataIndex: 'IsFocusNews', align: 'center' },
                                        { header: 'FocusNewsImage', dataIndex: 'FocusNewsImage' },
                                        { header: 'IsAllowComment', dataIndex: 'IsAllowComment', align: 'center' },
                                        { header: 'IsPublicToMobileClient', dataIndex: 'IsPublicToMobileClient' },
                                        { header: 'NewsStatus', dataIndex: 'NewsStatus', align: 'center' },
                                        { header: 'CreateDatetime', dataIndex: 'CreateDatetime', align: 'center' }
                     ],
                selModel: new Ext.create('Ext.selection.CheckboxModel'),
                viewConfig: { forceFit: true },
                tbar: [
                               {
                                   text: 'new',
                                   handler: function () {
                                       isAdd = true;
                                       winForm.show();
                                   }

                               } 
 
                               , {
                                   text: 'Delete',
                                   handler: function () {
                                      
                                   }
                               }, {
                                   text: 'Update',
                                   handler: function () {
                                       
                                   }
                               }
                         ]

            });

           

            var NewsCateTabWin = Ext.widget('form', {
                items: [grid],
                renderTo: Ext.getBody()

            });
        }); 
    </script>

报错：Uncaught Error: Ext.Loader is not enabled, so dependencies cannot be resolved dynamically. Missing required class: Ext.data.Mode

当我把这句 Ext.Loader.setConfig({ enabled: true }); 加上
报Failed to load resource: the server responded with a status of 404 (Not Found) http://localhost:2134/data/Mode.js?_dc=1351584112203和Uncaught TypeError: Object #<Object> has no method 'read'

不知是不是缺少 Ext.Loader.setPath('Ext.ux', '@Url.Content("~/Scripts/Ext/ux")'); 这样的设置，如果是的话，@Url.Content("~/Scripts/Ext/ux")这个目录里面应该放那些文件

[解决办法]
Ext.data下面没有Mode，是Model。。。

            Ext.define('NewContent', {
                //extend: 'Ext.data.Mode',
                  extend: 'Ext.data.Model',
                fields:
                [
                'NewsCategoryID',
                'PublicDate',
                'NewsMainTitle',
                 'NewsSubTitle',
                'NewsSummary',
                'NewsListImage',
                 'NewsContent',
                'IsFocusNews',
                'FocusNewsImage',
                 'IsAllowComment',
                'IsPublicToMobileClient',
                'NewsStatus',
                'CreateDatetime'
                ]
            });

[解决办法]
ux文件夹一般放的是自定义的插件，如果Ext.require需要到ux文件夹下的控件，需要设置ux路径

        Ext.Loader.setConfig({
            enabled: true
        });
        Ext.Loader.setPath('Ext.ux', '../ux');