Edited models to produce value of Total Cost for booking

MagisAir/booking/migrations/0003_booking_additem_subtotal.py

+# Generated by Django 4.0.4 on 2022-12-01 05:29
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('booking', '0002_booking_additional_item'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='booking_additem',
+            name='Subtotal',
+            field=models.IntegerField(default=0, editable=False),
+        ),
+    ]

MagisAir/booking/migrations/0004_alter_booking_additem_subtotal.py

+# Generated by Django 4.0.4 on 2022-12-01 05:51
+
+import booking.models
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('booking', '0003_booking_additem_subtotal'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='booking_additem',
+            name='Subtotal',
+            field=models.IntegerField(default=booking.models.Booking_AddItem.subtotal, editable=False),
+        ),
+    ]

MagisAir/booking/migrations/0005_alter_booking_additem_quantity_and_more.py

+# Generated by Django 4.0.4 on 2022-12-01 06:10
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('booking', '0004_alter_booking_additem_subtotal'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='booking_additem',
+            name='Quantity',
+            field=models.IntegerField(default=1),
+        ),
+        migrations.AlterField(
+            model_name='booking_additem',
+            name='Subtotal',
+            field=models.IntegerField(default=0, editable=False),
+        ),
+    ]

MagisAir/booking/migrations/0006_booking_flight_sched_alter_booking_total_cost_and_more.py

+# Generated by Django 4.0.4 on 2022-12-01 07:20
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('booking', '0005_alter_booking_additem_quantity_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='booking',
+            name='Flight_Sched',
+            field=models.ManyToManyField(through='booking.Booking_Sched', to='booking.schedule'),
+        ),
+        migrations.AlterField(
+            model_name='booking',
+            name='Total_Cost',
+            field=models.IntegerField(blank=True, default=0, editable=False),
+        ),
+        migrations.AlterField(
+            model_name='schedule',
+            name='Flight_Cost',
+            field=models.IntegerField(default=0),
+        ),
+    ]

MagisAir/booking/models.py

@@ -31,6 +31,26 @@ class Passenger(models.Model):
     def __str__(self):
         return self.First_Name + ' ' + self.Last_Name
 
+
+class City(models.Model):
+    Airport_Code = models.AutoField(primary_key=True, editable=False, unique=True)
+    Airport_name = models.CharField(max_length=50)
+    City_Name = models.CharField(max_length=50)
+    Country = models.CharField(max_length=50)
+
+    def __str__(self):
+        return self.Airport_name + ' (' + self.Country + ')'
+
+
+class Flight(models.Model):
+    Flight_ID = models.AutoField(primary_key=True, editable=False, unique=True)
+    Flight_Code = models.CharField(max_length=6)
+    Origin_Airport = models.ForeignKey(City, on_delete=models.CASCADE, related_name='origin')
+    Destination_Airport = models.ForeignKey(City, on_delete=models.CASCADE, related_name='destination')
+
+    def __str__(self):
+        return self.Flight_Code + ' (' + self.Origin_Airport.City_Name + ' to ' + self.Destination_Airport.City_Name + ')'
+
         
 class Additional_Item(models.Model):
     Description = models.CharField(max_length=50, primary_key=True, editable=True, unique=True)
@@ -40,16 +60,48 @@ class Additional_Item(models.Model):
         return self.Description 
 
 
+class Schedule(models.Model):
+    Sched_Code = models.AutoField(primary_key=True, editable=False, unique=True)
+    Flight_Date = models.DateField(null=True, blank=True)
+    Departure_Time = models.TimeField(null=True, blank=True)
+    Arrival_Time = models.TimeField(null=True, blank=True)
+    Duration = models.CharField(max_length=50)
+    Flight_Cost = models.IntegerField(default=0)
+    Flight_Code = models.ForeignKey(Flight, on_delete=models.CASCADE)
+
+
 class Booking(models.Model):
     Booking_ID = models.AutoField(primary_key=True, editable=False, unique=True)
     Booking_Date = models.DateField(null=True, blank=True)
-    Total_Cost = models.IntegerField(blank=True, default=0,null=False)
+    Total_Cost = models.IntegerField(blank=True, default=0, null=False, editable=False)
     Passenger = models.ForeignKey(Passenger, on_delete=models.CASCADE)
     Additional_Item = models.ManyToManyField(Additional_Item, through='Booking_AddItem')
+    Flight_Sched = models.ManyToManyField(Schedule, through='Booking_Sched')
 
     def __str__(self):
         return str(self.Booking_ID)
 
+    def flightCost(self):
+        costs = []
+        for x in self.Flight_Sched.all():
+            costs.append(x.Flight_Cost)
+        total = sum(costs)
+        return total
+    
+    def addCost(self):
+        costs = []
+        add_item = Booking_AddItem.objects.filter(Booking_ID=self.Booking_ID)
+        for x in add_item:
+            costs.append(x.Subtotal)
+        total = sum(costs)
+        return total
+    
+    def save(self, *args, **kwargs):
+        if not self.Booking_ID:
+            super(Booking, self).save(*args, **kwargs)
+        self.Total_Cost = self.flightCost() + self.addCost()
+        super(Booking, self).save(*args, **kwargs)  
+
 
 class Booking_AddItem(models.Model):
     class Meta:
@@ -57,26 +109,28 @@ class Booking_AddItem(models.Model):
 
     Booking_ID = models.ForeignKey(Booking, on_delete=models.CASCADE)
     AddItem_Desc = models.ForeignKey(Additional_Item, on_delete=models.CASCADE)
-    Quantity = models.IntegerField(default=0)
+    Quantity = models.IntegerField(default=1)
     Subtotal = models.IntegerField(default=0, editable=False)
 
-    @property
-    def save(self):
+    def subtotal(self):
         add_item = Additional_Item.objects.get(Description = self.AddItem_Desc)
         itemcost = add_item.Item_Cost
-        self.subtotal = itemcost*self.Quantity
-        return super().save()
-
+        subtotal = itemcost*self.Quantity
+        return subtotal
     
+    def save(self, *args, **kwargs):
+        self.Subtotal= self.subtotal()
+        super(Booking_AddItem, self).save(*args, **kwargs)
 
-class City(models.Model):
-    Airport_Code = models.AutoField(primary_key=True, editable=False, unique=True)
-    Airport_name = models.CharField(max_length=50)
-    City_Name = models.CharField(max_length=50)
-    Country = models.CharField(max_length=50)
 
-    def __str__(self):
-        return self.Airport_name + ' (' + self.Country + ')'
+
+class Booking_Sched(models.Model):
+    class Meta:
+        unique_together = ('Booking_ID', 'Sched_Code')
+
+    Booking_ID = models.ForeignKey(Booking, on_delete=models.CASCADE)
+    Sched_Code = models.ForeignKey(Schedule, on_delete=models.CASCADE)
+
 
 class Crew_Member(models.Model):
     Employee_ID = models.AutoField(primary_key=True, editable=False, unique=True)
@@ -131,34 +185,10 @@ class Flight_Attendant(models.Model):
     def __str__(self):
         return self.Employee_ID.First_Name + ' ' + self.Employee_ID.Last_Name + ' (' + self.Assigned_Class + ')'
 
-class Flight(models.Model):
-    Flight_ID = models.AutoField(primary_key=True, editable=False, unique=True)
-    Flight_Code = models.CharField(max_length=6)
-    Origin_Airport = models.ForeignKey(City, on_delete=models.CASCADE, related_name='origin')
-    Destination_Airport = models.ForeignKey(City, on_delete=models.CASCADE, related_name='destination')
-
-    def __str__(self):
-        return self.Flight_Code + ' (' + self.Origin_Airport.City_Name + ' to ' + self.Destination_Airport.City_Name + ')'
-
-class Schedule(models.Model):
-    Sched_Code = models.AutoField(primary_key=True, editable=False, unique=True)
-    Flight_Date = models.DateField(null=True, blank=True)
-    Departure_Time = models.TimeField(null=True, blank=True)
-    Arrival_Time = models.TimeField(null=True, blank=True)
-    Duration = models.CharField(max_length=50)
-    Flight_Cost = models.CharField(max_length=50)
-    Flight_Code = models.ForeignKey(Flight, on_delete=models.CASCADE)
 
 class Sched_Crew(models.Model):
     class Meta:
         unique_together = ('Sched_Code', 'Employee_ID')
 
     Sched_Code = models.ForeignKey(Schedule, on_delete=models.CASCADE)
-    Employee_ID = models.ForeignKey(Crew_Member, on_delete=models.CASCADE)
-
+    Employee_ID = models.ForeignKey(Crew_Member, on_delete=models.CASCADE)
\ No newline at end of file
-class Booking_Sched(models.Model):
-    class Meta:
-        unique_together = ('Booking_ID', 'Sched_Code')
-
-    Booking_ID = models.ForeignKey(Booking, on_delete=models.CASCADE)
-    Sched_Code = models.ForeignKey(Schedule, on_delete=models.CASCADE)