The store is used for a Ext.List obj. When ContactTags performs CRUD, all relevant views (like form.Panel) should update at the same time.
I suppose to do the definition in controller. But it doesn't work as I though. Therefore I have to specify a listener in the store (that I think it is not appropriate):
Store is not a component, so you can not use the refs or control to locate the Store,
give the Store a storeId, then use Ext.getStore('storeId').load(...)
Store is not a component, so you can not use the refs or control to locate the Store,
give the Store a storeId, then use Ext.getStore('storeId').load(...)