Ruby on rails Rails 4：仅请求查看访问用户记录（自引用）

我的目标是为用户提供一种发送请求的方式，以便与具有director角色的用户以及请求访问的director共享这些记录。因此，经过一些调查，我意识到这种设置与社交媒体平台发送好友请求的方式非常相似。但是，对于查看记录而言，请求是片面的

用户A希望与具有管理类型角色的用户B共享其“记录”

我的结论是，这与制作一个名为“请求”的表格有关，在该表格中，状态为[待定，已接受]。可能是另一个州被发送

到目前为止，我想出了

 rails g model request user:reference status:string

模型文件

 class Request < ActiveRecord::Base
   belongs_to :user
   belongs_to :student, class_name: 'User', foreign_key: 'user_id'
 end


 class User < ActiveRecord::Base
   ...

   has_many :students
   has_many :requests
   has_many :accepted_requests, :class_name => "Request", -> { where(requests: {status: 'accepted'})
   has_many :pending_requests, :class_name => "Request", -> { where(requests: {status: 'pending'})
   has_many :sent_requests, :class_name => "Request", -> { where(requests: {status: 'sent'})

   ...
 end

我找到了一些很好的资源，但不确定如何片面地实现

总的来说，我希望directors的用户角色能够查询

 User.where(role: 'director', email: 'user@example.com').first.students -> Access to any records of the following users who accepted the request. 

然后还可以访问

 @user.pending_requests (owned by user that received the request)
 @user.accepted_requests (possibly seen on both sides, so regular users can also delete accepted requests)
 @user.sent_requests (owned by user who sent request).

---

有人指导我下一步或是遗漏的部分吗？

经过一番熨烫和大量操作，我终于得到了答案

迁移

rails g model director_id:integer student_id:integer accepted:boolean

请求模型

belongs_to :director, class_name: 'User'
belongs_to :student, class_name: 'User'

用户模型

has_many :requests, foreign_key: :director_id, dependent: :destroy
has_many :received_requests, foreign_key: :student_id, class_name: 'Request', dependent: :destroy
has_many :directors, through: :received_requests, source: :director
has_many :students, -> { where  "requests.accepted = true" }, through: :requests, source: :student

现在您可以创建请求并使用@user.students或@user.directors 学生们只有在被接受为真的情况下才会出现

导演是唯一有权发送请求并可以通过@user.requests查看其请求的人，学生可以通过@user.received\u请求查看其当前请求

下面是我在Ember中为用户模型所做的

directors: DS.hasMany('user', {inverse: 'students'}),
students: DS.hasMany('user', {inverse: 'directors', async: true}),
requests: DS.hasMany('request'),
receivedRequests: DS.hasMany('request', {async: true}),

directors: DS.hasMany('user', {inverse: 'students'}),
students: DS.hasMany('user', {inverse: 'directors', async: true}),
requests: DS.hasMany('request'),
receivedRequests: DS.hasMany('request', {async: true}),