Saving a model breaks one to many relationships

Question

When I save a Parent object (which has many Child objects), the relationship is seemingly broken. The Ember docs are silent on this issue.

What do I need to do so th

Answer 1

This is an issue with the JSONSerializer and hasMany relationships. You can check this 'fixed' jsbin: http://jsbin.com/zodorule/13

Refer to this issue: http://discuss.emberjs.com/t/ember-data-fixture-adapter-saving-record-loses-has-many-relationships/2821

I added this to your code and it works:

DS.JSONSerializer.reopen({
    serializeHasMany : function(record, json, relationship) {
        var key = relationship.key;

        var relationshipType = DS.RelationshipChange.determineRelationshipType(
                record.constructor, relationship);

        if (relationshipType === 'manyToNone'
                || relationshipType === 'manyToMany'
                || relationshipType === 'manyToOne') {
            json[key] = Ember.get(record, key).mapBy('id');
            // TODO support for polymorphic manyToNone and manyToMany
            // relationships
        }
    }
});