通过麻烦积极记录

Question

我有三种型号。

class Location < ActiveRecord::Base
  attr_accessible :description
  belongs_to :user
  has_many :zones
  has_many :iteractions, :through => :zones
end

class Zone < ActiveRecord::Base
  attr_accessible :description
  belongs_to :location
  has_many :iteractions
end

class Iteraction < ActiveRecord::Base
  attr_accessible :count, :itime
  belongs_to :zone
  belongs_to :location, :through => :zone
end

所以我尝试安装rails_admin 对我说“未知密钥：通过（参数错误）”

错误在哪里？

Answer 1

belongs_to关联不能有:through选项。相反，您可以使用has_one :location, :through => :zone