#23270: select_related on fields pointing to subclasses does not work when using
defer
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     Reporter:  islavov              |                    Owner:  nobody
         Type:  Uncategorized        |                   Status:  new
    Component:  Database layer       |                  Version:  1.7-rc-2
  (models, ORM)                      |               Resolution:
     Severity:  Normal               |             Triage Stage:  Accepted
     Keywords:  select_related       |      Needs documentation:  1
  defer                              |  Patch needs improvement:  0
    Has patch:  0                    |                    UI/UX:  0
  Needs tests:  1                    |
Easy pickings:  0                    |
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Comment (by Vladimiroff):

 The reason behind this is that `subclassa` (in the given example) is not
 technically a **field**. Which means it won't be returned by
 `Base._meta.get_concrete_fields_with_model`. The only solution I could
 think of is creating `get_all_concrete_fields_with_model` (which should
 use `get_all_field_names` instead of `local_fields`).

 Anyone with better ideas?

-- 
Ticket URL: <https://code.djangoproject.com/ticket/23270#comment:3>
Django <https://code.djangoproject.com/>
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