Using storeId on a Ext.data.Store isn't making unique instances

[hallikpapa]

I have a store `APP.store.Posts` that I want to instantiate 3 different times. They will all hold the same type of data, but will be using different parameters when reloading, paging, etc. In a controller, I do this in the `onLaunch` function.

    onLaunch: function() {

        Ext.create('APP.store.Posts',{
            storeId: 'unclassifiedPosts'
        });
        Ext.create('APP.store.Posts',{
            storeId: 'positivePosts'
        });
        Ext.create('APP.store.Posts',{
            storeId: 'negativePosts'
        });
    },

Then later, in the `beforerender` listener methods I created on the controller, I do this:

    beforeRenderPostsGrid: function(grid) {
        var store = Ext.getStore('unclassifiedPosts');
        store.load();
    },
    beforeRenderPositivePostsGrid: function(grid) {        
        var store = Ext.getStore('positivePosts');
        store.getProxy().extraParams = {'some_param' : 'some_value'};
        store.load();
        var checkOtherStore = Ext.getStore('unclassifiedPosts'); //THIS STORE NOW HAS SAME PARAMS AS positivePosts STORE
    },

The problem is, whichever `beforerrender` grid is called last, all 3 stores have those parameters. So the initial load is fine, but if I do any refresh, paging, etc. They all show the same data b/c the proxies for each store have identical extraParams somehow.

From what I understood, the `storeId` parameter was supposed to make my store unique, so am I missing a step?

[hallikpapa]

Turns out, this is because I am assigning the proxy on the model, whereas in this instance, I need to do it on the store.