IntegrityError

Hi,

I've been trying to create a simple flight booking system but seem to have trouble.

When trying to create a Flight object it says that aircraft_id may not be null

and when trying to set a Passenger object it says flight_id may not be null

Here is my models.py file

from django.db import models

  2 from django.utils import timezone

  3 import datetime

  4 

 # Create your models here.

class Aircraft(models.Model):

   aircraft_model = models.CharField(max_length=30)

   aircraft_num_seats = models.IntegerField(default=50)

   available = models.BooleanField(default=False)

 

   def __unicode__(self):

       return "%s , %d , %s" % (self.aircraft_model,self.aircraft_num_seats,self.available)

 

class Passenger(models.Model):

   passenger_name = models.CharField(max_length=30,default="John")

   passenger_surname= models.CharField(max_length=30,default="Doe")

   def __unicode__(self):

       return "%s %s"% (self.passenger_name,self.passenger_surname)

  

  

class Flight(models.Model):

   aircraft = models.ForeignKey(Aircraft)

   passengers = models.ManyToManyField(Passenger)

  

   num_seat_available = models.IntegerField(default=50) # requires method to calculate this

   departFrom = models.CharField(max_length=50)

   departTo = models.CharField(max_length=50)

   departTime = models.DateTimeField(default=timezone.now())

   flight_duration = models.IntegerField(default=0) # requires method to calculate this

   arrival = models.DateTimeField(default = timezone.now())

   cancel_flight = models.BooleanField(default=False)

  

   def __unicode__(self):

      return "%s --> %s , %s --> %s" % (self.departFrom,self.departTo,str(self.departTime),str(self.arrival))

Thanks

--
You received this message because you are subscribed to the Google Groups "Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscribe@googlegroups.com.
To post to this group, send email to django-users@googlegroups.com.
Visit this group at http://groups.google.com/group/django-users.
To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/edab5b92-756f-4c90-a26e-75cedbe7d2af%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.