Ambiguous Relationship when calling user data from JSON response

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    • Type: Task
    • Resolution: Done
    • 12_01_17
    • Affects Version/s: None
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      I have Post model that holds viewer_ids and a User model that holds viewed_ids.
      viewer_ids got contain user objects and viewed_ids contain post objects.

      #Post class
belongs_to :user
has_and_belongs_to_many :viewers, class_name: 'User', inverse_of: :viewed  

#User class
has_many :posts
has_and_belongs_to_many :viewed, class_name: 'Post', inverse_of: :viewers

      I tested this relation using Rspec to read, write, and delete from both sides and it works. while updating the inverse of the relation just fine.

      The problem i found was when i get to use RABL to view list of posts. I render each post with user data embedded in each post. So when i remove child user it works. 

      child :user do
  extends "users/base"	
end

      If i get this error 

      Problem:
Ambiguous relations :posts, :viewed defined on User.
Summary:
When Mongoid attempts to set an inverse document of a relation in memory, it needs to know which relation it belongs to. When setting :user, Mongoid looked on the class Post for a matching relation, but multiples were found that could potentially match: :posts, :viewed.
Resolution:
On the :user relation on Post you must add an :inverse_of option to specify the exact relationship on User that is the opposite of :user.

      Am I doing something wrong, or is it a bug? BTW it gives the same error in the html response too.

            Assignee:
            Unassigned
            Reporter:
            seifsallam
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              Created:
              Updated:
              Resolved: