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  1. Mongoid
  2. MONGOID-2697

Eager_loads two different relations, which classes inherited from another one class.

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    • Type: Icon: Task Task
    • Resolution: Done
    • 3.1.0
    • Affects Version/s: None
    • Component/s: None
    • None

      Maybe it's a bug or a feature. When eager_loads by 'includes' two different relations, which classes inherited from another one class, expect two different objects.

      Example:

      class A
  include Mongoid::Document
end

class B < A
  belongs_to :d
end

class C < A
  belongs_to :d
end

class D
  include Mongoid::Document

  has_one :b
  has_one :c
end

d = D.create
B.create(d: d)
C.create(d: d)

d = D.includes(:b, :c).first
d.b == d.c # true
d.b
# #<C:0x007fd42aa3d418> {
#      :_id => "50e5bbf798663904ca000004",
#    :_type => "C",
#     :d_id => "50e5bbf798663904ca000002"
# }
d.c
# #<C:0x007fd42aa3d418> {
#      :_id => "50e5bbf798663904ca000004",
#    :_type => "C",
#     :d_id => "50e5bbf798663904ca000002"
# }

      Same behavior with 'has_many' relations.
      Check on Mongoid 3.0.17 and master branch.
      I would appreciate additions and corrections.

            Assignee:
            Unassigned Unassigned
            Reporter:
            kslazarev kslazarev
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              Created:
              Updated:
              Resolved: