#33937: Optimize m2m serialization to avoid loading full model instances
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     Reporter:  Gordon Wrigley        |                    Owner:  nobody
         Type:  Cleanup/optimization  |                   Status:  new
    Component:  Core (Serialization)  |                  Version:  4.0
     Severity:  Normal                |               Resolution:
     Keywords:  performance           |             Triage Stage:  Accepted
    Has patch:  0                     |      Needs documentation:  0
  Needs tests:  0                     |  Patch needs improvement:  0
Easy pickings:  0                     |                    UI/UX:  0
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Comment (by Gordon Wrigley):

 Replying to [comment:2 Mariusz Felisiak]:
 > > When not using natural keys, the handle_m2m_field function(​source)
 loads the full object for every entry in the m2m model, when it only needs
 the pks.
 >
 > What about natural keys? They can contain any combination of fields
 (also non-unique in general).

 It loads the whole objects for the natural key case as well, but I don't
 know if that is avoidable, whereas the PK case seems like it should be
 easily avoidable (and is also the one I care about :P )

-- 
Ticket URL: <https://code.djangoproject.com/ticket/33937#comment:3>
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