Extjs 如何在控制器中更改网格的存储/url？

是否可以更改分配给网格的存储的url？我做了那样的事，但看起来很难看。我相信还有另一种方法：

Ext.define('APP.controller.List', {
    extend : 'Ext.app.Controller',
    stores : ['Users', 'Reports'],
...
 // after click on some button
var lv = this.getUserlist();
lv.store.getProxy().api.read = 'data/reports.json'; // UGLY WAY to change url
lv.store.reload(); // and now my list has new content

In other way I have one list but I would like to load data there using 2 stores (users and reports). I know that store is assigned to list (grid) forever. 

How do it better without change url in store->proxy ?

Thanks for help.

请改用Store.setProxy（）方法：

var lv = this.getUserList();

lv.store.setProxy({
    type: 'ajax',
    url:  'data/reports.json'
});

我还建议重新考虑你的设计，如果它需要一个网格和两个商店。这里有点不对劲