formula with strange behavior

[mauro larese]

this formula is working only one time.

what is wrong with it?

         foundCustomer$:function(){

               if (this.store==null) {

                   found=false;

               } else{

                   found=this.store.getCount()>0;

               }

               return found;

           }

thank you very much

- Mauro

[Ryan Smith]

In this case, glu doesn't know what you are really looking for.  It can detect when there is a change to the store if you set the store property using something like this.set('store', Ext.create('Ext.data.Store', {})), but when the length of the store changes, there is no event fired that glu can listen to.

In your case, what I would do is setup a listener on the store for when the store is loaded, or the data is changed and then recalculate the formula and set the appropriate variable.  Something like this.

init: function(){

    this.store.on('datachanged', function(store){

        this.set('found', store.getCount() > 0)

    }, this)

}

That will allow you to listen to events that have changed on the store and determine when the count changes or anything changes.  Hopefully that helps!

-Ryan

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[Josh VanderLinden]

It looks like the problem is you're not really computing the value using actual properties of your viewmodel. It seems that formulas only update when you change properties using this.set('propertyName', 'value')

-Josh
Yes... The Nerd.
http://www.codekoala.com/
http://www.linkedin.com/in/joshvanderlinden

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