Ext.data.Model#setFields not Working as Expected

[wprater]

Documentation states that one can modify the fields for every instal of a Model with code such as:

A field named bar is not added to the next instance.

      Ext.define('TestModel', {
        extend: 'Ext.data.Model',
        config: {
          fields: [
            {
              name: 'foo'
            }
          ]
        }
      });
      (Ext.create('TestModel')).setFields([
        {
          name: 'bar'
        }
      ]);
      console.log((Ext.create('TestModel')).getFields());

Except if you look at the source in #updateFields, the fieldsCollection is just a local variable.

[Jamie Avins]

Thank you for the report.

[wprater]

If you have a work around for this, it'd be much appreciated. I've not had time yet to investigate this further.

Thanks!

[TommyMaintz]

Hi wprater,

Sorry for the delayed reply. I feel like the documentation should be improved to explain this, but if you set the fields on a model instance, it should only be reflected on that particular instance. If you want to change the fields for every new instance created of a Model, you should call the method on the Model class. In your example if you change it to the following, it will achieve what you are trying to do.

        Ext.define('TestModel', {
            extend: 'Ext.data.Model',
            config: {
                fields: [{
                    name: 'foo'
                }]
            }
        });

        Ext.setup({
            onReady: function() {
                TestModel.setFields([{
                  name: 'bar'
                }]);

                console.log((Ext.create('TestModel')).getFields());
            }
        });

Hope this solves your problem.

Best,
Tommy