logbook-django/logbook/flight/models.py

from django.db import models
from decimal import Decimal
# Create your models here.

class Plane(models.Model):
    tail_number = models.CharField(max_length=64, primary_key=True)  # "N43337"
    name = models.CharField(max_length=64) # "Warrior II"
    manufacturer = models.CharField(max_length=64) # Piper
    model = models.CharField(max_length=64) # PA28-151

    def __str__ (self):
        return self.tail_number

class Airport(models.Model):
    icao = models.CharField(max_length=4, primary_key=True)

    def __str__ (self):
        return self.icao

class Flight(models.Model):
    flight_date = models.DateField() # "flight_date": "2019-08-31",
    plane = models.ForeignKey(Plane, on_delete=models.PROTECT)
    instructor = models.CharField(max_length=64, blank=True)  # "instructor": "Gene Moody",
    remarks = models.TextField(blank=True)  # "remarks": "normal to/l, shortfield to/l, std turns, constant speed, constant descents",

    airport_depart = models.ForeignKey(Airport, on_delete=models.PROTECT, related_name='%(class)s_from')  # "from": "KEEN",
    airport_arrive = models.ForeignKey(Airport, on_delete=models.PROTECT, related_name='%(class)s_to')  # "to": "KEEN",

    landings = models.IntegerField()

    airplane_sel_time = models.DecimalField(max_digits=2, decimal_places=1, default=Decimal(0.0))
    airplane_mel_time = models.DecimalField(max_digits=2, decimal_places=1, default=Decimal(0.0))
    cross_country_time = models.DecimalField(max_digits=2, decimal_places=1, default=Decimal(0.0))
    day_time = models.DecimalField(max_digits=2, decimal_places=1, default=Decimal(0.0))
    night_time = models.DecimalField(max_digits=2, decimal_places=1, default=Decimal(0.0))
    actual_instrument_time = models.DecimalField(decimal_places=1,max_digits=2, default=Decimal(0.0))
    simulated_instrument_time = models.DecimalField(max_digits=2, decimal_places=1, default=Decimal(0.0))
    ground_trainer_time = models.DecimalField(max_digits=2, decimal_places=1, default=Decimal(0.0))
    dual_received_time = models.DecimalField(max_digits=2, decimal_places=1, default=Decimal(0.0))
    pilot_in_command_time = models.DecimalField(max_digits=2, decimal_places=1, default=Decimal(0.0))
    total_time = models.DecimalField(max_digits=2, decimal_places=1, default=Decimal(0.0))

    link = models.CharField(max_length=200, blank=True)

    def __str__(self):
      return f"{self.flight_date}: {self.plane} {self.total_time}h - {self.airport_depart} -> {self.airport_arrive}"