Backbone has-many

model.js

var BaseModel = Backbone.Model.extend({

  _relations: {
    hasOne: {}
  },

  parse: function(data) {
    var model;

    if(_.isFunction(this.hasOne)) { this._createRelation('hasOne'); }
    if(this._hasRelationType('hasOne')) { this._setRelationOnModel('hasOne', data); }

    return data;
  },

  _hasRelationType: function(_type) {
    return typeof this._relations[_type] !== 'undefined';
  },

  // Create a relation
  _createRelation: function(_type) {
    var relation = this.hasOne();

    _.each(relation, function(obj) {
      var data = _.clone(obj),
          modelObj = new obj['className'];

      _.extend(data, { modelObj: modelObj });
      this._relations[_type][data['key']] = data;
    }.bind(this));
  },

  // TODO
  // Needs refactoring for `hasMany` collection that will create collection
  // of models
  // Set relation data on the model
  _setRelationOnModel: function(_type, data) {
    var model,
        relations = this._relations[_type],
        reltion;

    for(var key in relations) {
        relation = relations[key];
        model = relation['modelObj'];
        model.set(_.clone(data[relation['key']]));
        data[relation['name']] = model;

        // Delete the data for this relation that came from the server
        // Be cautious / need to find a better solution
        delete data[relation['key']];
    }

    return data;
  }
});

user.js

var UserModel = BaseModel.extend({

  hasOne: function() {
    return  [
      { name: 'admin', className: oudux.store.UserModel, key: 'original_admin' },
      { name: 'weblink', className: oudux.store.WeblinkModel, key: 'primary_weblink' }
    ];
  },

  url: function() {
    
  }
});