Refreshing store after new request

I have a grid which uses a store, the store takes the data from

proxy: new Ext.data.HttpProxy({ur开发者_Python百科l: 'http:.../request.php'}),

On the same page I have a form. My goal is to refresh and populate the grid with new data composed by the query from DB via php.

I have heard there is a way to do so using php and saving the data in a json file on the server (so that the store would use the file), but doesn't it make impossible for two users work simultaniously?

Is there another way to do it?

Alternatively you can reload the grid by using

Ext.getCmp('idOfTheGrid').getStore().reload();

Your question is un clear. If you want to reload a particular store you use a similar syntax as the following:

StoreName.load({params:{start:0, limit:15}});