71 lines
1.9 KiB
Python
71 lines
1.9 KiB
Python
from django.db import models
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from users.models import CustomUser
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class Event(models.Model):
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MORNING, AFTERNOON, EVENING = range(3)
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TIME_SLOTS = {
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MORNING: "Voormiddag",
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AFTERNOON: "Namiddag",
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EVENING: "Avond",
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}
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date = models.DateField()
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time = models.IntegerField(choices=TIME_SLOTS.items(), default=MORNING)
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capacity = models.IntegerField(default=6)
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def __str__(self):
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return f"{self.date} {self.TIME_SLOTS[self.time]}"
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def time_str(self):
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return Event.TIME_SLOTS[self.time]
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def count_with_status(self, status):
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return self.eventregistration_set.filter(state=status).count()
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def count_interested(self):
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return self.count_with_status(EventRegistration.INTERESTED)
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def count_admitted(self):
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return self.count_with_status(EventRegistration.ADMITTED)
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def registration_of(self, user):
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registrations = self.eventregistration_set.filter(user=user).all()
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if not registrations:
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return None
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assert len(registrations) == 1, "Registrations should be unique per user and event"
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return registrations[0]
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class EventRegistration(models.Model):
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INTERESTED = "I"
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ADMITTED = "A"
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REGISTRATION_STATE = {
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INTERESTED: "Op wachtlijst",
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ADMITTED: "Bevestigd",
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}
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event = models.ForeignKey(Event, on_delete=models.CASCADE)
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user = models.ForeignKey(CustomUser, on_delete=models.CASCADE)
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state = models.CharField(max_length=1, choices=REGISTRATION_STATE.items())
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class Meta:
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constraints = [
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models.UniqueConstraint(
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fields=["event", "user"], name="user can only register once per event"
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)
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]
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def __str__(self):
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return f"Reservation[{self.user.username}:{self.event.date}:{self.state}]"
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def state_str(self):
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return EventRegistration.REGISTRATION_STATE[self.state]
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