CODEWITHSUNDEEP
javascriptbackbone.js
Enrique Moreno Tent
Enrique Moreno Tent

Reputation: 25267

Workaround on validation bug in Backbone 0.9.10

I am using Backbone 0.9.10.

var Person = Backbone.Model.extend({
    defaults: {
        name: "John Doe",
        age: 30
    },
    validate: function (attrs) {
        if (attrs.age < 0) {
            console.log("Age must be positive, idiot!");
        };
    }
});

If I do this on the console...

var p = new Person;
p.set("age", -20, {validate: true});

...my model gets updated anyway. How can I prevent that?

I know there's an issue open, but is there any workaround? Or do I need to wait for a bugfix?

Upvotes: 0

Views: 61

Answers (1)

WiredPrairie
WiredPrairie

Reputation: 59763

The problem is that your call to set uses the attribute name Age (with a capital A) rather than age. 

p.set("age", -20, {validate: true});

Also, when the validate fails, you should return something other than undefined.

validate: function (attrs) {
    if (attrs.age < 0) {
        return "Be more positive!";
    }
}

Upvotes: 3

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