#28514: Clarify docs regarding idempotence of RelatedManager.add()
-------------------------------------+-------------------------------------
     Reporter:  Дилян Палаузов       |                    Owner:  Jezeniel
         Type:                       |  Zapanta
  Cleanup/optimization               |                   Status:  assigned
    Component:  Documentation        |                  Version:  1.11
     Severity:  Normal               |               Resolution:
     Keywords:                       |             Triage Stage:  Accepted
    Has patch:  1                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  1
Easy pickings:  1                    |                    UI/UX:  0
-------------------------------------+-------------------------------------

Comment (by Дилян Палаузов):

 I don't think that the ON CONFLICT DO NOTHING change will get into Django
 2.0, even if #28668 was fixed yesterday.

 Under these circumstances for the next year or so  {{{.add(one more
 elements)}}} can raise an {{{IntegrityError}}} or send wrong m2m_changed
 signals and this should be documented.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/28514#comment:15>
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