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Thread: Unable to un store event

    Looks like we can't reproduce the issue or there's a problem in the test case provided.
  1. #1
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    Default Unable to un store event

    Ext version tested:
    • Ext 4.1.1rc2

    Browser versions tested against:
    • FF14

    Description:
    • Listen for store load event and then un the created function

    Steps to reproduce the problem:
    • Create a store in a controller and using the 'on' method - add a listener for the load event to fire
    • 'un' the load events function

    The result that was expected:
    • The 'on' load event calls the function once!

    The result that occurs instead:
    • the function for on is called everytime the event load is fired

    Test Case:

    Inside my controller
    Code:
    var store = Ext.create('App.store.MyStore')
    
    store.filter([{  
                property:'id',
                value: myID
            }]); //calls ->Load()<- !
    
    store.on("load", function(a,b,c ...){
                    var panel = Ext.create("App.view.myGridPanel");
                    this.showInQuickView(panel);
                     this.application.fireEvent("loadDone");
                    store.un('load', arguments.callee);                              //doesn't 'un' the event function - even if store is a handedover from the function parameter (in this case = a)
    }, this);
    When using the refresh button on the pagingtoolbar, the above function is called again. I know that I can add the filters parameter to the store.load({scope, callback, filters}) method... however, then the pagingtoolbar is unaware of the filters at a later stage (i.e. when using the refresh button).

    Possible fix:
    • add a var i = 0, then stick an if(i==0) inside the above function so the code is only executed once by adding i++ (increment) after the if statement

  2. #2
    Sencha - Ext JS Dev Team evant's Avatar
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      1  

    Default

    This isn't a bug. When you remove the event, you also need to pass the scope along.

    Also, if you want a single fire event, you can use the single param:

    Code:
    store.on('load', function(){
    }, this, {single: true});
    Evan Trimboli
    Sencha Developer
    Twitter - @evantrimboli
    Don't be afraid of the source code!

  3. #3
    Sencha Premium Member
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    Default

    Superb... checked the documentation to see if it is there.. and it is Must have glanced over it. Thanks for the great and very quick reply

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