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[2.2.x] Refs #30083 -- Clarified database state of instances in signals.pre_init docs.

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Backport of a2e1c17f193f5017e1f6fac7d860f1f9e34d7892 from master
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Mariusz Felisiak 2019-07-19 13:02:57 +02:00
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docs/ref/signals.txt
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@ -99,6 +99,13 @@ Arguments sent with this signal:
``instance`` ``instance``
The actual instance of the model that's just been created. The actual instance of the model that's just been created.
.. note::
``instance._state`` isn't set before sending the ``post_init`` signal,
so ``_state`` attributes always have their default values. For example,
``_state.db`` is ``None`` and cannot be used to check an ``instance``
database.
``pre_save`` ``pre_save``
------------ ------------