【发布时间】:2013-02-14 21:33:15
【问题描述】:
我正在教孩子们如何在 Rails 中开发一个特定的应用程序,它需要一种资源,即某人对其他人负责。例如,这里有 2 个模型:
class User < ActiveRecord::Base
attr_accessible :name
has_many :responsible_fors, class_name: 'ResponsibleFor', foreign_key: 'responsible_by_ user_id'
has_many :responsible_for_people, through: :responsible_fors
has_many :responsible_bys, class_name: 'ResponsibleFor', foreign_key: 'responsible_for_user_id'
has_many :responsible_by_people, through: :responsible_bys
end
class ResponsibleFor < ActiveRecord::Base
attr_accessible :relationship, :responsible_by_id, :responsible_for_id
belongs_to :responsible_by, class_name: 'User'
belongs_to :responsible_for, class_name: 'User'
end
我没有在上面测试过这个特定的代码,但这个概念对我来说很有意义......虽然responsible 和responsible for 分别是形容词和介词,而不是名词,因为 Rails 中的资源应该是.有一个更好的方法吗? Rails 的多元化或其他操作会以其他方式扰乱它吗?有更好的名词吗?
【问题讨论】:
-
您可能必须在您的
through键之后设置一个source。举个例子,你应该有has_many :responsible_for_people, through: :responsible_fors, source: responsible_for。
标签: ruby-on-rails ruby-on-rails-3 ruby-on-rails-3.2 rails-activerecord activeresource