rails : stack level too deep
===

Actually i'm on a project for a model many->many. I need to find with a current user all credits/devices/project (and I think it's useless to have a table credit with only two column (id & score) so I merge this table to the join table). 

I get this error :

    SystemStackError in Users#show
    
    Showing app/views/shared/_credit.html.erb where line # raised:
    
    stack level too deep

And the two model :

    class **Credit** < ActiveRecord::Base
      attr_accessible :created_at, :credit_id, :device_id, :project_id, :score, :user_id
      
    belongs_to :device
    belongs_to :user
    belongs_to :project
    belongs_to :score
    
    end

    class **User** < ActiveRecord::Base
    
    has_many :credit
    has_many :credit, :through => :credit, foreign_key: "user_id", dependent: :destroy
    end

Thank !

Best.