#33505: Inconsistent Behavior with Abstract Models and Signals
-------------------------------------+-------------------------------------
     Reporter:  Ken Weaver           |                    Owner:  nobody
         Type:  Bug                  |                   Status:  closed
    Component:  Database layer       |                  Version:  3.2
  (models, ORM)                      |
     Severity:  Normal               |               Resolution:  invalid
     Keywords:                       |             Triage Stage:
                                     |  Unreviewed
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------

Comment (by Ken Weaver):

 Yes I understand, but as the code above demonstrates, when adding a
 receiver for a `m2m_changed` signal and `Abstract.m2m_field.through` field
 as the sender, the code operates the same as if the sender was `None`.
 This, not the fact that `pre_save`, `post_save` etc. signals are not
 automatically sent for abstract models, is the peculiar behavior that led
 to this ticket.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/33505#comment:4>
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