Reloading hasMany relationships

A few months back, I had a need to have a hasMany relationship automatically reload itself when I saved a user.

It seemed to me, that Ember Data would handle this for me, if I did a manual reload of the model, but it seems this was incorrect. Despite reloading the user attributes, none of the relationships are reloaded and you must manually trigger a reload on them.

For anyone else who has the same problem, here is how I got around it and forced a reload:

item.save().then(() => {
  const user = this.modelFor(this.routeName);
  const item = this.store.createRecord(type);
  const pluralType = `${type}s`;
  user.get(pluralType).addObject(item);
  return user.save().then((savedUser) => {
    savedUser.hasMany(pluralType).reload();
  });
});