ExtJS 4.2.1 Model - field defaultValue: undefined is not a function

Question

In my application i got e.g. two Models like this:

Ext.define('App.model.Translation', {
    extend: 'App.model.MRModel',
    requires: 'App.model.TranslationItem',

    fields: [
       ...
    ],...

and

Ext.define('App.model.administration.Station', {
    extend: 'App.model.MRModel',
    requires: [
        'App.model.Translation',
        'App.classes.proxy.ProxyNegotiator'            
    ],

    fields: [
        ...
    ],...

and in my Model Station i want to add a field with the default value of a new Translation like this:

Ext.define('App.model.administration.Station', {
    extend: 'App.model.MRModel',
    requires: [
        'App.model.Translation',
        'App.classes.proxy.ProxyNegotiator'        
    ],

    fields: [
        { name: 'Id', type: 'int', convert: null },
        {
            name: 'Name',
            type: 'auto',
            convert: function(value) {
                ...
            },
            defaultValue: new App.model.Translation()
        },

though when i am inserting this line with the default Value i get the following error: Uncaught TypeError: undefined is not a function It seems that the Translation class is not loaded jet.. I dont understnand this cuz i added the class to the requires array...

Please help.

Answer 1

The defaultValue is a string or the object that should be the default value.

The problem is that new App.model.Translation() probably does not return what you need. It should return an empty string or 0 or something similar (just a plain simple default value for the Name).

If you want to translate, you should use the config convert like

convert: function(value) {
    App.model.Translation.translate(value)
},