generated from bisco/codex-bootstrap
86 lines
2.8 KiB
Python
86 lines
2.8 KiB
Python
from django.db import models
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from django.db.models import F, Q, Sum
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class TimeStampedModel(models.Model):
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created_at = models.DateTimeField(auto_now_add=True)
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updated_at = models.DateTimeField(auto_now=True)
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class Meta:
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abstract = True
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class Show(TimeStampedModel):
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title = models.CharField(max_length=200)
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slug = models.SlugField(max_length=220, unique=True)
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summary = models.TextField(blank=True)
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description = models.TextField(blank=True)
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poster_image = models.URLField(blank=True)
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is_published = models.BooleanField(default=False, db_index=True)
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class Meta:
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ordering = ["title"]
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indexes = [
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models.Index(fields=["slug"]),
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models.Index(fields=["is_published"]),
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]
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def __str__(self):
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return self.title
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class Venue(TimeStampedModel):
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name = models.CharField(max_length=200)
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slug = models.SlugField(max_length=220, unique=True)
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address = models.CharField(max_length=255)
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city = models.CharField(max_length=120)
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notes = models.TextField(blank=True)
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class Meta:
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ordering = ["name"]
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indexes = [
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models.Index(fields=["slug"]),
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models.Index(fields=["city"]),
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]
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def __str__(self):
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return self.name
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class Performance(TimeStampedModel):
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show = models.ForeignKey(Show, on_delete=models.PROTECT, related_name="performances")
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venue = models.ForeignKey(Venue, on_delete=models.PROTECT, related_name="performances")
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starts_at = models.DateTimeField(db_index=True)
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room_capacity = models.PositiveIntegerField()
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manually_occupied_seats = models.PositiveIntegerField(default=0)
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additional_seats = models.PositiveIntegerField(default=0)
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is_booking_enabled = models.BooleanField(default=True, db_index=True)
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class Meta:
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ordering = ["starts_at"]
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indexes = [
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models.Index(fields=["show", "starts_at"]),
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models.Index(fields=["venue", "starts_at"]),
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models.Index(fields=["is_booking_enabled", "starts_at"]),
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]
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constraints = [
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models.CheckConstraint(
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condition=Q(manually_occupied_seats__lte=F("room_capacity") + F("additional_seats")),
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name="performance_manual_seats_within_capacity",
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),
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]
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def __str__(self):
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return f"{self.show} at {self.starts_at:%Y-%m-%d %H:%M}"
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@property
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def configured_capacity(self):
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return self.room_capacity + self.additional_seats - self.manually_occupied_seats
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def confirmed_seats(self):
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result = self.reservations.filter(status="confirmed").aggregate(total=Sum("party_size"))
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return result["total"] or 0
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def available_seats(self):
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return self.configured_capacity - self.confirmed_seats()
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