37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
from django.db import models
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from .carrier import Carrier
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from .aircraft import Equipment
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from .aerodrome import Aerodrome
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from django.core.validators import MinValueValidator, MaxValueValidator
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class Flight(models.Model):
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carrier = models.ForeignKey(
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Carrier, on_delete=models.CASCADE, related_name="flights"
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)
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equipment = models.ForeignKey(
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Equipment, on_delete=models.CASCADE, related_name="flights"
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)
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origin = models.ForeignKey(
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Aerodrome, on_delete=models.CASCADE, related_name="departures"
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)
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destination = models.ForeignKey(
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Aerodrome, on_delete=models.CASCADE, related_name="arrivals"
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)
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flight_number = models.PositiveIntegerField(
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validators=[MinValueValidator(1), MaxValueValidator(9999)]
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)
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departure_time = models.DateTimeField()
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arrival_time = models.DateTimeField()
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class Meta:
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constraints = [
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models.UniqueConstraint(
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fields=["carrier", "flight_number"], name="unique_flight_per_carrier"
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)
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]
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def __str__(self):
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return f"{self.carrier.icao}{self.flight_number} {self.origin.icao} > {self.destination.icao}"
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