Bernard Siebens
22d971d48c
Add Event.created_by (the owner, used later by the access service to let an event's creator edit it). Validate that an event's season/location/opponent — and an EventSeries' location/opponent — belong to the event's club. The teams M2M cannot be checked in clean() (M2M rows are written after save), so an m2m_changed pre_add receiver rejects teams from another club. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
61 lines
2.3 KiB
Python
61 lines
2.3 KiB
Python
"""Signal wiring that keeps attendance in sync with the event audience.
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Registered from ``EventsConfig.ready``. Two triggers:
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* editing an event (its ``start``, or its ``teams`` / ``invited_members`` /
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``excluded_members``) re-syncs that event;
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* adding or removing a member from a team roster re-syncs that team's future
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events.
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"""
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from django.core.exceptions import ValidationError
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from django.db.models.signals import m2m_changed, post_delete, post_save
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from django.dispatch import receiver
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from django.utils import timezone
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from django.utils.translation import gettext_lazy as _
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from events.models import Event, EventSeries
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from events.services import sync_event_attendances
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from teams.models import Team, TeamMembership
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M2M_SYNC_ACTIONS = {"post_add", "post_remove", "post_clear"}
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@receiver(m2m_changed, sender=Event.teams.through)
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@receiver(m2m_changed, sender=EventSeries.teams.through)
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def validate_teams_same_club(sender, instance, action, reverse, pk_set, **kwargs):
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# Reject teams from another club before they're attached (forward adds only;
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# the reverse direction — team.scheduled_events.add(...) — is not a used path).
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if action != "pre_add" or reverse:
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return
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if Team.objects.filter(pk__in=pk_set).exclude(club_id=instance.club_id).exists():
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raise ValidationError(_("Teams must belong to the same club as the event."))
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@receiver(post_save, sender=Event)
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def sync_on_event_save(sender, instance, **kwargs):
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sync_event_attendances(instance)
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@receiver(m2m_changed, sender=Event.teams.through)
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@receiver(m2m_changed, sender=Event.invited_members.through)
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@receiver(m2m_changed, sender=Event.excluded_members.through)
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def sync_on_audience_change(sender, instance, action, reverse, model, pk_set, **kwargs):
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if action not in M2M_SYNC_ACTIONS:
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return
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if isinstance(instance, Event):
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sync_event_attendances(instance)
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else:
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# Reverse relation edited (e.g. member.invited_to_events.add(event)).
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for event in Event.objects.filter(pk__in=pk_set or []):
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sync_event_attendances(event)
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@receiver(post_save, sender=TeamMembership)
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@receiver(post_delete, sender=TeamMembership)
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def sync_on_roster_change(sender, instance, **kwargs):
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now = timezone.now()
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for event in Event.objects.filter(teams=instance.team_id, start__gte=now).distinct():
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sync_event_attendances(event)
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