#30710: impossible without workarounds to see which fields changed when 
subscribing
to signals from generic views
-------------------------------+--------------------------------------
     Reporter:  MaxR           |                    Owner:  nobody
         Type:  Uncategorized  |                   Status:  closed
    Component:  Uncategorized  |                  Version:  2.1
     Severity:  Normal         |               Resolution:  wontfix
     Keywords:                 |             Triage Stage:  Unreviewed
    Has patch:  0              |      Needs documentation:  0
  Needs tests:  0              |  Patch needs improvement:  0
Easy pickings:  0              |                    UI/UX:  0
-------------------------------+--------------------------------------
Changes (by Carlton Gibson):

 * status:  new => closed
 * resolution:   => wontfix


Comment:

 This is the expected behaviour
 
([https://docs.djangoproject.com/en/2.2/ref/signals/#django.db.models.signals.post_save
 as documented]).

 As per [https://docs.djangoproject.com/en/2.2/ref/models/instances
 /#specifying-which-fields-to-save Specifying which fields to save] the
 saved fields are only limited if you pass `update_fields`, otherwise it's
 all, so you don't need it in `post_save`.

 If you want to pass `update_fields`, override your form's `save()`
 accordingly.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/30710#comment:1>
Django <https://code.djangoproject.com/>
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