Javascript Sencha touch json保存为原始数据而不是数据

Javascript Sencha touch json保存为原始数据而不是数据,javascript,json,extjs,sencha-touch,Javascript,Json,Extjs,Sencha Touch,我有下面的JSON {pic:[{id:10,title:Perro,description:Un-lindo perrito,puntos:300,ext:jpeg,image\u time:2014-07-28 03:58:31,data:,URL:pug.jpeg},{id:12,title:Pugs,description:\u00danete a la fuerza,puntos:123,ext:jpeg,image\u time:2014-07-30 07:05:42,data:,U

我有下面的JSON

{pic:[{id:10,title:Perro,description:Un-lindo perrito,puntos:300,ext:jpeg,image\u time:2014-07-28 03:58:31,data:,URL:pug.jpeg},{id:12,title:Pugs,description:\u00danete a la fuerza,puntos:123,ext:jpeg,image\u time:2014-07-30 07:05:42,data:,URL:image.jpg},{id:14,标题:burro,描述:lindo burro,puntos:678,分机:png,图片时间:2014-07-30 16:25:44,数据:,URL:1456105_475563429279_7985916_n.png}

以及以下模型:

Ext.define('hptest2.model.pic', {
    extend: 'Ext.data.Model',

    config: {
        idProperty: 'id',
        fields: [
            {name: 'id',   type: 'int'},
            {name: 'URL',   type: 'String'},
            {name: 'puntos',   type: 'int'}, 
            {name: 'title',   type: 'String'},
            {name: 'descripcion',   type: 'String'},
            {name: 'data',   type: 'String'},
            {name: 'ext',   type: 'String'},
            {name: 'image_time',   type: 'String'},
        ]
    }
});
及其商店:

Ext.define('hptest2.store.pic', {
    extend: 'Ext.data.Store',
    config: {
        model: 'hptest2.model.pic',

        proxy: {
            type: 'ajax',
            url: 'data/pic.php'
        },
        reader: {
            type: 'json',
            rootProperty: 'pic'
        }

    }
}); 
但当我在视图上使用tpl时……我就是无法访问存储中的数据

视图:

{
    title: 'Promociones',
    iconCls: 'star',
    items: [
        {
            xtype: 'panel',
            store : 'pic',
            tpl:new Ext.XTemplate('<div>{URL} with {puntos}</div>'),                              
         }
    ]
} 
但在data->all->data->raw中,我能够可视化我希望通过视图访问的所有数据

pic: Array[3]
    0: Object
        URL: "pug.jpeg"
        data: ""
        descripcion: "Un lindo perrito"
        ext: "jpeg"
        id: "10"
        image_time: "2014-07-28 03:58:31"
        puntos: "300"
        title: "Perro"
        __proto__: Object
    1: Object
    2: Object
pic: Array[3]
    0: Object
        URL: "pug.jpeg"
        data: ""
        descripcion: "Un lindo perrito"
        ext: "jpeg"
        id: "10"
        image_time: "2014-07-28 03:58:31"
        puntos: "300"
        title: "Perro"
        __proto__: Object
    1: Object
    2: Object