Store and Listeners

Hi,

I need to add listeners to a Store. I want to do some special processing in the "load" event.

In the Documentation we can read

listeners : Object

A config object containing one or more event handlers to be added to this object during initialization. This should be a valid listeners config object as specified in the addListener example for attaching multiple handlers at once.

See the Event guide for more

Note: It is bad practice to specify a listener's config when you are defining a class using Ext.define(). Instead, only specify listeners when you are instantiating your class with Ext.create().

I don't understand why **It is a bad practice**

I have a View associated with it's ViewController and I would like to keep the special processing in the store and not bother the View nor the ViewController.

I instantiate the store in my view but I don't want to define a listener in my view nor in my controller.

I have specified in the definition of my Store the listener that I need, but some how the my listener is not called. What am I doing wrong?

Code:

Ext.define('My.store.WeeklyHours', {
    extend: 'Ext.data.Store'
    ,model: 'My.model.Entry'
    ,storeId: 'WeeklyHours'
    ,remoteSort: false
    ,proxy: {
        type: 'ajax'
        ,api: {
            read: 'data/user/week/entries'
        }
        ,reader: {
            type: 'json'
            ,rootProperty: 'results'
            ,totalProperty: 'totalCount'
        }
    }
        ,listeners: [
              {
                fn: this.onLoadStore,
                event: 'load',
                scope:this
              }
            ]
        ,onLoadStore: function() {
                var proxy = this.getProxy()
                var reader = proxy.getReader()
                var rawData = reader.rawData
                ....

Thanks for your help.