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https://github.com/ae-utbm/sith3.git
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ef968f3673
* Better usage of cache for group retrieval * Cache clearing on object deletion or update * replace signals by save and delete override * add is_anonymous check in is_owned_by Add in many is_owned_by(self, user) methods that user is not anonymous. Since many of those functions do db queries, this should reduce a little bit the load of the db. * Stricter usage of User.is_in_group Constrain the parameters that can be passed to the function to make sure only a str or an int can be used. Also force to explicitly specify if the group id or the group name is used. * write test and correct bugs * remove forgotten populate commands * Correct test
18 lines
641 B
Python
18 lines
641 B
Python
from django.core.cache import cache
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from django.db.models.signals import m2m_changed
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from django.dispatch import receiver
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from core.models import User
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@receiver(m2m_changed, sender=User.groups.through, dispatch_uid="user_groups_changed")
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def user_groups_changed(sender, instance: User, **kwargs):
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"""
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Clear the cached clubs of the user
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"""
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# As a m2m relationship doesn't live within the model
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# but rather on an intermediary table, there is no
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# model method to override, meaning we must use
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# a signal to invalidate the cache when a user is removed from a club
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cache.delete(f"user_{instance.id}_groups")
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