nk20/apps/note/signals.py

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# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
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# SPDX-License-Identifier: GPL-3.0-or-later
from django.utils import timezone
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def save_user_note(instance, raw, **_kwargs):
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"""
Hook to create and save a note when an user is updated
"""
if not raw and (instance.is_superuser or instance.profile.registration_valid)\
and not hasattr(instance, "_no_signal"):
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# Create note only when the registration is validated
from note.models import NoteUser
NoteUser.objects.get_or_create(user=instance)
instance.note.save()
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def save_club_note(instance, raw, **_kwargs):
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"""
Hook to create and save a note when a club is updated
"""
# When provisionning data, do not try to autocreate
if not raw and not hasattr(instance, "_no_signal"):
from .models import NoteClub
NoteClub.objects.get_or_create(club=instance)
instance.note.save()
def pre_save_note(instance, raw, **_kwargs):
if not raw and instance.pk and not hasattr(instance, "_no_signal") and instance.balance < 0:
from note.models import Note
old_note = Note.objects.get(pk=instance.pk)
if old_note.balance >= 0:
# Passage en négatif
instance.last_negative = timezone.now()
instance.send_mail_negative_balance()
def delete_transaction(instance, **_kwargs):
"""
Whenever we want to delete a transaction (caution with this), we ensure the transaction is invalid first.
"""
if not hasattr(instance, "_no_signal"):
instance.valid = False
instance._force_save = True
instance.save()