Why is it that I end up with the ObjectId instead of unit.race -> Race() ?

_form.ejs

<div class="clearfix">
  <%- form.label("race") %>
  <div class="input">
    <%- form.input( 'race' ) %>
  </div>
</div>

schema.js

var mongoose = require('mongoose')
  , Schema = mongoose.Schema
  , ObjectId = Schema.ObjectId;
  

var Race = describe('Race', function () {
  property('name', String);
});

var Unit = describe('Unit', function () {
    property('name', String);
    property('race', { type: ObjectId, ref: 'Race'});
    property('type', String);
    property('at1', Number);
    property('at2', Number);
    property('at3', Number);
    property('dt1', Number);
    property('dt2', Number);
    property('dt3', Number);
});

unit.js

Unit.attackTypes = function () {
  return ['at1', 'at2', 'at3'];
};

Unit.defenseTypes = function () {
  return ['dt1', 'dt2', 'dt3'];
};

Unit.types = function () {
  return ['land', 'water', 'air', 'space'];
};

// Unit.races = function () {
//   return ['terran', 'alien'];
// };

Unit.validatesPresenceOf('name')
Unit.validatesLengthOf('name', {min: 5})

Unit.validatesPresenceOf('at1')
Unit.validatesPresenceOf('at2')
Unit.validatesPresenceOf('at3')

Unit.validatesPresenceOf('dt1')
Unit.validatesPresenceOf('dt2')
Unit.validatesPresenceOf('dt3')

Unit.validatesPresenceOf('raceId')

Unit.validatesPresenceOf('type')
Unit.validatesInclusionOf('type', {in: Unit.types()})