#27419: Model that worked before 1.10 causes "Cannot force an update in save() 
with
no primary key." in 1.10.
-------------------------------------+-------------------------------------
     Reporter:  Louis-Dominique      |                    Owner:  nobody
  Dubeau                             |
         Type:  Bug                  |                   Status:  new
    Component:  Database layer       |                  Version:  1.10
  (models, ORM)                      |
     Severity:  Normal               |               Resolution:
     Keywords:  save model property  |             Triage Stage:
                                     |  Unreviewed
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------

Comment (by Lucas Moeskops):

 The bug seems to be introduced here:

 {{{
 commit 7f51876f99851fdc3fef63aecdfbcffa199c26b9
 Author: Anssi Kääriäinen <anssi.kaariai...@thl.fi>
 Date:   Tue Feb 2 11:33:09 2016 +0200

     Fixed #26207 -- Replaced dynamic classes with non-data descriptors for
 deferred instance loading.

 :040000 040000 bc475a97153a13ed83629d19d53f4aff0cb064f6
 0343367b1a537396c570ab15d6c8495b70e4700c M      django
 :040000 040000 439540406e70c8b9ef43db729dbec4cb473e7ee0
 a4775e8e1bdb64eb549d000a9e6efcd58868b86e M      docs
 :040000 040000 cc14ca4b983abe3a6aa6f0f82b329375e7259df7
 a9e3feb171711fe29098f1f3d2370f878f936c04 M      tests
 }}}

--
Ticket URL: <https://code.djangoproject.com/ticket/27419#comment:2>
Django <https://code.djangoproject.com/>
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