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53 lines
1.8 KiB
Python
53 lines
1.8 KiB
Python
# -*- coding:utf-8 -*
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#
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# Copyright 2023
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# - Maréchal <thgirod@hotmail.com>
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#
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# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
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# http://ae.utbm.fr.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License a published by the Free Software
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# Foundation; either version 3 of the License, or (at your option) any later
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# version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
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# Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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#
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from django.core.cache import cache
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from django.db.models.signals import pre_delete, post_init, pre_save
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from django.dispatch import receiver
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from club.models import Club, Membership
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@receiver(pre_delete, sender=Club, dispatch_uid="clear_cached_club")
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def clear_cached_club(sender, instance: Club, **_kwargs):
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"""
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When a club is deleted, clear the cache of the memberships
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associated with this club
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"""
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for membership in instance.members.ongoing().select_related("user"):
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cache.delete(f"membership_{instance.id}_{membership.user.id}")
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cache.delete(f"sith_club_{instance.unix_name}")
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@receiver(
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[pre_save, pre_delete],
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sender=Membership,
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dispatch_uid="clear_cached_membership",
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)
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def clear_cached_membership(sender, instance: Membership, **_kwargs):
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"""
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When the membership of a user is deleted or edited, clear the associated cache
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"""
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cache.delete(f"membership_{instance.id}_{instance.user.id}")
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