Ruby on rails 混合自指、多对多和多态关系

我正在开发一些应用程序，我有用户、帖子和报告模型，用户可以报告其他用户或帖子。所以我这样做了：

class Report < ActiveRecord::Base
  belongs_to :user
  belongs_to :reportable, :polymorphic => true
  ...

class User < ActiveRecord::Base
  has_many :reports, :dependent => :destroy
  has_many :reported_users, :through => :reports, :source => :reportable, :source_type => 'User'
  has_many :reported_posts, :through => :reports, :source => :reportable, :source_type => 'Post'
  has_many :reports, :as => :reportable, :dependent => :destroy
  ...

class Post < ActiveRecord::Base
  has_many :reports, :as => :reportable, :dependent => :destroy
  ...

我得到一个错误，说：

User reports another user
Failure/Error: @reporter.reported_users.size.should == 1
  expected: 1
       got: 0 (using ==)

---

无法找出问题所在，我可以在一个模型中同时使用

has\u many:reports

和

has\u many:reports，：as=>：reportable

吗？还有，我如何为用户获取记者？假设我想要有

@user.reporters

来获取报告某个特定用户的所有其他用户。

将第二个

的has-many:reports更改为
has-many:reverse\u reports
解决了以下问题：

class User < ActiveRecord::Base
  has_many :reports, :dependent => :destroy
  has_many :reported_users, :through => :reports, :source => :reportable, :source_type => 'User'
  has_many :reported_posts, :through => :reports, :source => :reportable, :source_type => 'Post'
  has_many :inverse_reports, :class_name => 'Report', :as => :reportable, :dependent => :destroy

class User < ActiveRecord::Base
  has_many :reports, :dependent => :destroy
  has_many :reported_users, :through => :reports, :source => :reportable, :source_type => 'User'
  has_many :reported_posts, :through => :reports, :source => :reportable, :source_type => 'Post'
  has_many :inverse_reports, :class_name => 'Report', :as => :reportable, :dependent => :destroy

  has_many :reporters, :through => :inverse_reports, :source => :user