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Access hasMany nested relationships in Ember / Ember data

I am trying to access hasMany nested relationships, waiting for a promise. Unfortunately, I do not get the expected results with any of the following:

// Tried the following
this.get('users.emails')
this.get('users.@each.emails')
this.get('users').get('emails')

// Trying to avoid this:
this.get('users').
  then(function(users) {
    var arr = Ember.A();

    users.forEach(function(user, index){
      arr.pushObject(user.get('emails'));
    });

    return array;
  }).
  then(function(emailArr){
    // then do something
  });

// Preferable
this.get('users.emails').then(function(emails){
  // then do something
});
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1 answer

If you defined your model with a value asyncset to true as follows:

users: DS.hasMany('user', {async: true})

then usually the call this.get('users')returns an array of promises and may not be resolved by the time it is used.

Nested ones getsare complex, especially with complicating asynchronous models, so I recommend you do this:

this.get('users').then(function(users) {
    users.get('emails').then(function(emails) {
        // do stuff with emails.
    });
}

Annoying? Absolutely. Probably need it? Yes.

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