on supprime le cache d'un événement quand on le modifie

Fix #254

src/agenda_culturel/models.py

@@ -10,6 +10,7 @@ from colorfield.fields import ColorField
 from django_ckeditor_5.fields import CKEditor5Field
 from urllib.parse import urlparse
 from django.core.cache import cache
+from django.core.cache.utils import make_template_fragment_key
 from django.contrib.auth.models import User, AnonymousUser
 import emoji
 
@@ -1156,6 +1157,12 @@ class Event(models.Model):
         # first save the current object
         super().save(*args, **kwargs)
 
+        # clear cache
+        for is_auth in [False, True]:
+            key = make_template_fragment_key("event_body", [is_auth, self])
+            cache.delete(key)
+        logger.warning("on passe par le save")
+
         # then if its a clone, update the representative
         if clone:
             self.other_versions.representative = self