The method is mainly intended for use with UUIDField. For UUIDField we
want to call the field's default even when primary key value is
explicitly set to None to match the behavior of AutoField.

Thanks to Marc Tamlyn and Tim Graham for review.

Thanks jekka-ua for the report and patch.

Specifically in rendering shortcuts, template responses, and class-based
views that return template responses.

Also added a test for render_to_response(status=...) which was missing
from fdbfc980.

Thanks Tim and Carl for the review.

This function is unused since dce820ff
after being introduced in 718a5ba1

Fixed #24255 -- Specifed 'fields' parameter in modelformset_factory / inlineformset_factory examples.

This function is unused since 6fe2b001

This method is unused since f567d04b

This method was inadvertently reintroduced in
f59fd15c

This method is unused since 337d102b

Needed for tests for migrations handling of database defaults.

This method is unused since 8717b066.

This reverts commit da79ccca.

This optimized the unsuccessful case at the expense of the successful one.

Thanks Anssi Kääriäinen, Marc Tamlyn, and Tim Graham for the reviews.

An explicit `__exact` lookup in the related managers filters
was interpreted as a reference to a foreign `exact` field.

Thanks to Trac alias zhiyajun11 for the report, Josh for the investigation,
Loïc for the test name and Tim for the review.

Reference: http://lh.2xlibre.net/locale/fa_IR/

Django imports threading in many other places without fallback.

Removed unused method and updated docstrings.

Thanks Tom Christie for the report and review.