Model cross-field Validation, (in a Store)

[snam]

Hi!

I would like to do model cross-fields validation.
I read this thread
http://stackoverflow.com/questions/7...276996#9276996
proposing to add a reference to the model in each validation item:

Ext.define('MyApp.model.CustomModel', {    
    extend: 'Ext.data.Model',
    constructor: function() {
        this.callParent(arguments)
        var i, len;


        if (this.config.validations) {
            for (i = 0, len = this.config.validations.length; i < len; i++) {
                if (this.config.validations[i].self) {
                    console.log(this.config.validations[i].self)
                }
                this.config.validations[i].self = this;
            }
        }
    }
});

Then the idea is to have a model (MyModel) extending CustomModel.

When I use a single instance of MyModel, everything is fine.
But as soon as I define a Store of MyModel, I see that the 'this' object is not a new instance of the model for each record of the store. (see the console.log... )

Is it correct that all the records of a store share a unique model instance ?

If this is true, how can I deal with the problem of providing a reference of each record to the validation ?


Thanks

[snam]

I think I identified the problem.
In Model.js, in the 'onClassExtended' function (which I guess is called when I define the 'CustomModel' class):

/**
 * @property {Ext.util.Collection} validations
 * The validations defined on this model.
 */
cls.prototype.validations = cls.validations = cls.prototype._validations = (superCls && superCls.validations)
    ? superCls.validations.clone()
    : new Ext.util.Collection(function(validation) {
             return validation.field || validation.name;
     });

This code is a bit tricky for me to understand, but if I get it right, when a new instance of Model is created, if the 'validations' field already exists in the superclass, then it is cloned instead of creating a new one.

Then I guess the idea proposed in the previous post cannot work when used with Stores ?

Any other way to do cross-field model validation ?

Thanks

[snam]

I found this solution (in the Sencha Touch 1 forum, but it worked for me in ST2):http://www.sencha.com/forum/showthre...ds-validationsIt requires an override of the validate() method of the Model class, but if you don't mind then this is easier than what I exposed earlier...