Finding record by custom primaryKey - ember.js

Question

My model is defined as follow:
App.User = DS.Model.extend({
primaryKey: 'username',
username: DS.attr('string'),
name: DS.attr('string')
});
My custom Adapter map:
DS.SocketAdapter.map('App.User', {
primaryKey: 'username',
username: DS.attr('string'),
});
I am testing this model out by typing on console:
App.User.createRecord({username:"user_1"});
var r = App.User.find("user_1");
console.log( r.serialize() );
>> Object {username: null, name: null ..... all null}
But it retuns a "null" Object. Also tested:
App.User.find({username:"user_1"});
But this is doing a remote request. I read that Ember Data does allow you to find records via attributes other than the ID.
So what I am doing wrong in telling Ember data my custom primaryKey?

Answer 1

I think your problem lies in the fact that you are defining username twice. if you map username from your json to your model's primaryKey trough your Adapter, then you should avoid to do the same on the model I guess. There are different approaches where to define the mapping, but the Adapter is the most appropriate place In your case, see here for more details: https://github.com/emberjs/data/blob/master/BREAKING_CHANGES.md#mapping
change your code like so and it should work:
// Model
App.User = DS.Model.extend({
name: DS.attr('string')
});
// Adapter
DS.SocketAdapter.map('App.User', {
primaryKey: 'username'
});
now try to create a new record
App.User.createRecord({username:"user_1", name:"foo"});
and then find the record by it's id as you already did:
var r = App.User.find("user_1");
this
console.log( r.serialize() );
should then give you at least:
>> Object {name: "foo" ...}
hope it helps