Javascript Sencha touch以与JSON嵌套相同的方式关联模型

我的json输出是：

{"Result":
{"Data":
[{"gmt_id":"1","gmt":"-12:00","secondsDiff":"-43200","Location":"Baker IslanIsland"},
{"gmt_id":"2","gmt":"-11:00","secondsDiff":"-39600","Location":"American Samoa, Samoa"},
{"gmt_id":"3","gmt":"-10:00","secondsDiff":"-36000","Location":"Hawaii, Papeete"}]}}

--我希望我的模型与结果和数据嵌套，这样在存储上设置autoLoad:true时，应该访问流上的key:value。但是我的console.log提供[]。我在我的模型中的某个地方出错了，请帮助

--这是我的型号

Ext.regModel('Gmt',
        {'Result':
            {'Data':
            [
                {name:'gmt_id',type:'string'},
                {name:'Location',type:'string'}
            ]
            }

        });

var jsonStore = new Ext.data.Store({ model: "Gmt", proxy: { type: 'ajax', url: 'gmt.php', //url: 'data.json', method: 'GET', // callback: console.log(response), reader: { type: 'json', //root: 'Data' root:'Result' // type:'json' }, afterRequest: function (request, success) { if (success) { console.log("success"); } else { console.log("failed"); }

    }             
        },
       autoLoad: true

    });

这是我要加载数据的存储：
var jsonStore = new Ext.data.Store({
                model: "Gmt",
                proxy: {
                    type: 'ajax',
                    url: 'gmt.php',
                      //url: 'data.json',
                      method: 'GET',
                      //  callback: console.log(response),
                    reader: {
                       type: 'json',
                        //root: 'Data'
                       root:'Result'
                      // type:'json' 
                },
         afterRequest: function (request, success) {
                    if (success) {
                        console.log("success");
                    } else {
                        console.log("failed");
                    }


    }             
        },
       autoLoad: true

    });


--访问键：此处的值参数

var jsonStore = new Ext.data.Store({
                model: "Gmt",
                proxy: {
                    type: 'ajax',
                    url: 'gmt.php',
                      //url: 'data.json',
                      method: 'GET',
                      //  callback: console.log(response),
                    reader: {
                       type: 'json',
                        //root: 'Data'
                       root:'Result'
                      // type:'json' 
                },
         afterRequest: function (request, success) {
                    if (success) {
                        console.log("success");
                    } else {
                        console.log("failed");
                    }


    }             
        },
       autoLoad: true

    });

var jsonStore = new Ext.data.Store({
            model: "Gmt",
            proxy: {
                type: 'ajax',
                url: 'gmt.php',
                  //url: 'data.json',
                  method: 'GET',
                  //  callback: console.log(response),
                reader: {
                   type: 'json',

                   root:'Result.Data'

            },
     afterRequest: function (request, success) {
                if (success) {
                    console.log("success");
                } else {
                    console.log("failed");
                }


}             
    },
   autoLoad: true

});

我自己解决了

--更改存储根目录

--将“Result.Data”设置为根