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Fixed #22002 -- Documented avoiding database interaction in AppConfig.ready().

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Thanks Marc Tamlyn for the suggestion.
This commit is contained in:
Zbigniew Siciarz 2014-02-15 17:27:12 +01:00 • committed by Tim Graham
parent cd7f37b647
commit 94b5bc361a
3 changed files with 19 additions and 0 deletions
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13
docs/ref/applications.txt
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@ -221,6 +221,19 @@ Methods
def ready(self):
MyModel = self.get_model('MyModel')
.. warning::
Although you can access model classes as described above, avoid
interacting with the database in your :meth:`ready()` implementation.
This includes model methods that execute queries
(:meth:`~django.db.models.Model.save()`,
:meth:`~django.db.models.Model.delete()`, manager methods etc.), and
also raw SQL queries via ``django.db.connection``. Your
:meth:`ready()` method will run during startup of every management
command. For example, even though the test database configuration is
separate from the production settings, ``manage.py test`` would still
execute some queries against your **production** database!
.. _namespace package:
Namespace packages as apps (Python 3.3+)