has_one / belongs_to not loading

我认为这是因为我的提案模型是如何设置的，但我不确定如何绕过它。

杰伦响应

{
  "proposal":[
    {
      "id":1,
      "proposee_id":1,
      "proposer_id":4
    }
  ],
  "user":{
    "id":4,
    "username":"rawr",
    "email":"rawr@ar.com",
    "proposal_id":1
  }
}

提案模型（Ember）

App.Proposal = DS.Model.extend
    proposer: DS.belongsTo "user"
    proposee: DS.belongsTo "user"
    status: DS.attr "string"

提案模型（轨道）

class Proposal < ActiveRecord::Base
    belongs_to :proposer, class_name: "User"
    belongs_to :proposee, class_name: "User"
end

用户模型（Ember）

App.User = DS.Model.extend
  username: DS.attr 'string'
  email: DS.attr 'string'
  password: DS.attr 'string'
  password_confirmation: DS.attr 'string'
  proposal: DS.belongsTo "proposal"

用户模型（轨道 - 截断）

class User < ActiveRecord::Base
    before_save :encrypt_password
    attr_accessor :password
    has_one :proposal_to, class_name: "Proposal", foreign_key: "proposer_id"
    has_one :proposal_from, class_name: "Proposal", foreign_key: "proposee_id"
end