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