Ember-data has many async problem

async problem

// I found a strange problem:
// if model describes like that:
App.otherModel = DS.Model.extend({
  text: DS.attr('string')
});

App.model = DS.Model.extend({
 field: DS.hasMany('otherModel', {async: true})
});
 
// and model.field is empty,
// then adding a new element to the field
var modelInstance = store.createRecord('model'), // store is defined
  otherModelInstance = store.createRecord('otherModel'),

modelInstance.get('field').pushObject(otherModelInstance)
// causes an error: 'The content property of DS.Promise Array should be set before modifying it'
// and adding an object in another way:
modelInstance.get('field')
  .then(function (field) {
    field.pushObject(otherModelInstance);
  });
// wouldn't work because the promise will not actually resolved.
// How can we add objects to model.field in that case?

I am also having this issue. any solution yet?

me too! the only google hit for that exception!

The code at the bottom of the OP's example works fine for me:

modelInstance.get('field').then(function(field) {
  field.pushObject(otherModelInstance);
});

Calling modelInstance.get('field') instantly resolves the promise.

Thanks @courthead. Worked for me as well.

Thanks @courthead.

@courthead

Thanks thats the solution

@courthead
Solved my issue for this project. Thanks!