How does override work?

[JBlinten]

After reading everything I could find on Architect's override in the forums, I am confused on what it can do and how to use it.

It appears that you can override any function as in the example: http://www.sencha.com/forum/showthre...l=1#post745334


But is it possible to override a model's configuration? For instance, I would really like to use 4.1's hasOne feature . But when I try something like the following, it does not work:

Ext.define('MyApp.model.override.XXX', {
    requires: 'MyApp.model.XXX'
}, function() {
    Ext.override(MyApp.model.XXX, {
        
        fields: [
        {
            name: 'value',
            type: 'float'
        }],
        
         associations: { type: 'hasOne', model: 'YYY' }
        
    });
});

Am I setting this up incorrectly or is it impossible to override configurations in models & stores?

Note that I am not trying to get Architect's interface to recognize a 4.1 model. I am adding Views dynamically & simply want them to point to a 4.1 model.

[digeridoopoo]

I agree, overrides confused me in Architect. How would you go about using them properly?

[angraxs2]

Me too. Im trying to use touch charts and I just can´t figure it out;

[oldroy]

Ext.define('MyApp.model.override.XXX',{
  override: 'MyApp.model.XXX',

  initComponent: function() {
     this.fields = [
      // your fields
     ];
     this.associations = [
      // your associations
      ];
   this.callParent(arguments);
  }
});

[angraxs2]

Can you drop an example of using touch charts with override please?

[oldroy]

I have no examples of doing overrides with charts. Never have had the chance to work with them yet.

[jjohnston]

@angraxs2: I assume you are trying to use the Sencha Touch 2.1 beta, since touch charts don't exist in 2.0.x. I haven't tried it but in general you would create a Container and create an override for the container, then edit the override code to add an 'items' config containing the configuration for your chart. So something like:

Ext.define('MyApp.view.override.MyContainer1', {
    override: 'MyApp.view.MyContainer1',
    
    config: {
        items: [{
            xtype: 'chart',
            store: 'myChartStore',
            // ...etc...
        }]
    }    
});

@JBlinten: I believe that Models, or at least certain aspects of models, cannot be overridden using the class system's override method because model classes are initialized immediately upon class definition, not on instantiation, so by the time your override code runs the model has already finished being set up.

[angraxs2]

Thanks for the tip. I will give a try today and will give a feedback for whoever is also tro figure it out.

[oana0211]

I've try to add to my model a custom field but the following code doesn't work.
Can somebody put an example?
Thank you.

Ext.define('aaaBanking.model.override.DynamicForm', {
override: 'aaaBanking.model.DynamicForm',

fileds: [
{
name: 'listValue',
type: 'listItems'
}
]

});

[tangix]

I've try to add to my model a custom field but the following code doesn't work.

If the misspelling of "fields" is in your code, this would explain the problems.
The overrides are not checked for errors etc.