def update(self, instance: Attendance, validated_data: dict) -> Attendance:
"""
Upraví účast a provede další nutné transformace dat.
"""
attendancestate_old = instance.attendancestate
canceled_old = instance.lecture.canceled
# uprava instance ucasti
instance = super().update(instance, validated_data)
# proved korekce poctu predplacenych lekci
LectureHelpers.lecture_corrections(instance.lecture, instance,
canceled_old, attendancestate_old)
# nastav lekci jako zrusenou pokud nikdo nema prijit
LectureHelpers.cancel_lecture_if_nobody_arrives(instance.lecture)
return instance
def update(self, instance: Lecture,
validated_data: dict) -> Lecture: # type: ignore
"""
Upraví lekci a k ní příslušející účasti klientů, provede další nutné transformace.
"""
canceled_old = instance.canceled
attendances_data = validated_data.pop("attendances", None)
# uprava instance lekce
instance = super().update(instance, validated_data)
# pokud nejsou zaslany ucasti, update konci
if not attendances_data:
return instance
# upravy jednotlivych ucasti
attendances = instance.attendances.all()
refresh_clients = validated_data["refresh_clients"]
for attendance_data in attendances_data:
# najdi prislusnou ucast
attendance = attendances.get(pk=attendance_data["id"])
# projeveni zmen klientu skupiny (smazani ucasti)
if instance.group and refresh_clients:
# pokud ucastnik uz neni clenem skupiny, smaz jeho ucast a prejdi na dalsiho ucastnika
try:
instance.group.memberships.get(client=attendance.client)
except ObjectDoesNotExist:
attendance.delete()
continue
# jedna se stale o clena skupiny (nebo neni pozadovano projeveni zmen klientu), proved prislusne upravy
attendancestate_old = attendance.attendancestate
# uprava ucasti
attendance = super().update(attendance, attendance_data)
# proved korekce poctu predplacenych lekci
LectureHelpers.lecture_corrections(instance, attendance,
canceled_old,
attendancestate_old)
# projeveni zmen klientu skupiny (pridani ucasti)
if instance.group and refresh_clients:
LectureHelpers.refresh_clients_add(instance, attendances_data)
# nastav lekci jako zrusenou pokud nikdo nema prijit
LectureHelpers.cancel_lecture_if_nobody_arrives(instance)
return instance
