Javascript 如何在sencha touch中将值从控制器传递到数据存储

有人能告诉我如何将数据从控制器传递到SenchaTouch中的数据存储区吗

视图代码

var select = new Ext.form.Select({
    id:'selectCity',
    store: parking.stores.city,
    displayField: 'Name',
    valueField: 'Name',
    placeHolder: 'Choose City',
    cls:'select'
});

var citySearchButton = new Ext.Button({
    cls: 'citySearch',
    text: 'Search',
    handler: function () {
        Ext.dispatch({
            controller: parking.controllers.controller,
            action: 'showMapBasedOnCity',
            id: Ext.getCmp('selectCity').getValue()
        });
    }
});

在我看来，我能够将值传递给控制器

 showMapBasedOnCity: function (options) {
        var city = options.id;
        //var data = parking.stores.parkingFacilityByCity.setId(city);
        // parking.views.map.addMap(city);
        parking.views.viewport.setActiveItem(
            parking.views.map, options.animation
        );

    },

问题是如何将值从这里传递到数据存储：我需要控制器的参数（城市值）传递到我的jsonp查询，以返回所需的结果）

任何帮助都将不胜感激

谢谢，

---

Pawan

在我的表单中单击按钮，我从中获取值并将其传递给分派方法。在分派方法中，我调用控制器

var select = new Ext.form.Select({
    id:'selectCity',
    store: parking.stores.city,
    displayField: 'Name',
    valueField: 'Name',
    placeHolder: 'Choose City',
    cls:'select'
});

var citySearchButton = new Ext.Button({
    cls: 'citySearch',
    text: 'Search',
    handler: function () {
        Ext.dispatch({
            controller: parking.controllers.controller,
            action: 'showMapBasedOnCity',
            id: Ext.getCmp('selectCity').getValue()
        });
    }
});

在控制器中，我调用方法get parking facility by city，该方法将新数据输入存储

  showMapBasedOnCity: function (options) {
        var city = options.id;
        getParkingFacilityByCity(city);
     //   parking.views.map.addMap();
        parking.views.viewport.setActiveItem(
            parking.views.map, options.animation
        );

Data.js文件

parking.stores.parkingFacilityByCity = new Ext.data.Store({
    model: 'PF',
    autoload: true
});

var getParkingFacilityByCity = function (cityName) {
    Ext.util.JSONP.request({
        url: 'http://parking.511.org/index/M_GetParkingFacilityByCity',
        callbackKey: 'callback',
        params: { city: cityName },
        callback: function (data) {
            parking.stores.parkingFacilityByCity.loadData(data.Root);
        }
    });
};

希望这能帮助一些人。可能还有其他方法。但是这个对我来说很有效

parking.stores.parkingFacilityByCity = new Ext.data.Store({
    model: 'PF',
    autoload: true
});

var getParkingFacilityByCity = function (cityName) {
    Ext.util.JSONP.request({
        url: 'http://parking.511.org/index/M_GetParkingFacilityByCity',
        callbackKey: 'callback',
        params: { city: cityName },
        callback: function (data) {
            parking.stores.parkingFacilityByCity.loadData(data.Root);
        }
    });
};