Add "single_ticket_per_product" boolean to ticket types so we can control ticket creation.

src/camps/factories.py

@@ -0,0 +1,36 @@
+import factory
+from django.utils import timezone
+
+from factory.django import DjangoModelFactory
+from psycopg2._range import DateTimeTZRange
+
+
+class CampFactory(DjangoModelFactory):
+    class Meta:
+        model = "camps.Camp"
+
+    read_only = False
+
+    title = factory.Faker("word")
+    tagline = factory.Faker("sentence")
+    slug = factory.Faker("slug")
+    shortslug = factory.Faker("slug")
+
+    buildup = factory.LazyFunction(
+        lambda: DateTimeTZRange(
+            lower=timezone.now() - timezone.timedelta(3), upper=timezone.now()
+        )
+    )
+
+    camp = factory.LazyFunction(
+        lambda: DateTimeTZRange(lower=timezone.now(), upper=timezone.now())
+    )
+
+    teardown = factory.LazyFunction(
+        lambda: DateTimeTZRange(
+            lower=timezone.now() + timezone.timedelta(8),
+            upper=timezone.now() + timezone.timedelta(11),
+        )
+    )
+
+    colour = factory.Faker("hex_color")

src/shop/factories.py

@@ -30,6 +30,7 @@ class ProductFactory(DjangoModelFactory):
             lower=timezone.now(), upper=timezone.now() + timezone.timedelta(31)
         )
     )
+    ticket_type = factory.SubFactory("tickets.factories.TicketTypeFactory")
 
 
 class OrderFactory(DjangoModelFactory):

src/shop/models.py

@@ -208,6 +208,7 @@ class Order(CreatedUpdatedModel):
         return str(reverse_lazy("shop:order_detail", kwargs={"pk": self.pk}))
 
     def create_tickets(self, request=None):
+        tickets = []
         for order_product in self.orderproductrelation_set.all():
             # if this is a Ticket product?
             if order_product.product.ticket_type:
@@ -216,32 +217,57 @@ class Order(CreatedUpdatedModel):
                     ticket_type=order_product.product.ticket_type,
                 )
 
-                already_created_tickets = self.shoptickets.filter(
-                    **query_kwargs
-                ).count()
-                tickets_to_create = max(
-                    0, order_product.quantity - already_created_tickets
-                )
+                if order_product.product.ticket_type.single_ticket_per_product:
+                    # This ticket type is one where we only create one ticket
+                    ticket, created = self.shoptickets.get_or_create(**query_kwargs)
 
-                # create the number of tickets required
-                if tickets_to_create > 0:
-                    for _ in range(
-                        0, (order_product.quantity - already_created_tickets)
-                    ):
-                        self.shoptickets.create(**query_kwargs)
+                    if created:
+                        msg = (
+                            "Created ticket for product %s on order %s (quantity: %s)"
+                            % (
+                                order_product.product,
+                                order_product.order.pk,
+                                order_product.quantity,
+                            )
+                        )
+                        tickets.append(ticket)
+                    else:
+                        msg = "Ticket already created for product %s on order %s" % (
+                            order_product.product,
+                            order_product.order.pk,
+                        )
 
-                    msg = "Created %s tickets of type: %s" % (
-                        order_product.quantity,
-                        order_product.product.ticket_type.name,
-                    )
                     if request:
                         messages.success(request, msg)
-                    else:
-                        print(msg)
+                else:
+                    # We should create a number of tickets equal to OrderProductRelation quantity
+                    already_created_tickets = self.shoptickets.filter(
+                        **query_kwargs
+                    ).count()
+                    tickets_to_create = max(
+                        0, order_product.quantity - already_created_tickets
+                    )
 
-                    # and mark the OPR as ticket_generated=True
-                    order_product.ticket_generated = True
-                    order_product.save()
+                    # create the number of tickets required
+                    if tickets_to_create > 0:
+                        for _ in range(
+                            0, (order_product.quantity - already_created_tickets)
+                        ):
+                            ticket = self.shoptickets.create(**query_kwargs)
+                            tickets.append(ticket)
+
+                        msg = "Created %s tickets of type: %s" % (
+                            order_product.quantity,
+                            order_product.product.ticket_type.name,
+                        )
+                        if request:
+                            messages.success(request, msg)
+
+                        # and mark the OPR as ticket_generated=True
+                        order_product.ticket_generated = True
+                        order_product.save()
+
+        return tickets
 
     def mark_as_paid(self, request=None):
         self.paid = True

src/shop/tests.py

@@ -4,6 +4,8 @@ from django.utils import timezone
 from psycopg2.extras import DateTimeTZRange
 
 from shop.forms import OrderProductRelationForm
+from tickets.factories import TicketTypeFactory
+from tickets.models import ShopTicket
 from utils.factories import UserFactory
 from .factories import ProductFactory, OrderProductRelationFactory, OrderFactory
 
@@ -371,3 +373,27 @@ class TestOrderListView(TestCase):
         path = reverse("shop:order_list")
         response = self.client.get(path)
         self.assertEquals(response.status_code, 200)
+
+
+class TestTicketCreation(TestCase):
+    def test_multiple_tickets_created(self):
+        user = UserFactory()
+        ticket_type = TicketTypeFactory(single_ticket_per_product=False)
+        product = ProductFactory(ticket_type=ticket_type)
+        order = OrderFactory(user=user)
+        OrderProductRelationFactory(order=order, product=product, quantity=5)
+        order.mark_as_paid()
+        self.assertEquals(
+            ShopTicket.objects.filter(product=product, order=order).count(), 5
+        )
+
+    def test_single_ticket_created(self):
+        user = UserFactory()
+        ticket_type = TicketTypeFactory(single_ticket_per_product=True)
+        product = ProductFactory(ticket_type=ticket_type)
+        order = OrderFactory(user=user)
+        OrderProductRelationFactory(order=order, product=product, quantity=5)
+        order.mark_as_paid()
+        self.assertEquals(
+            ShopTicket.objects.filter(product=product, order=order).count(), 1
+        )

src/tickets/admin.py

@@ -1,5 +1,6 @@
 from django.contrib import admin
 
+from shop.models import OrderProductRelation
 from .models import TicketType, SponsorTicket, DiscountTicket, ShopTicket
 
 
@@ -51,12 +52,24 @@ class ShopTicketAdmin(BaseTicketAdmin):
         "order",
         "product",
         "used",
+        "product_quantity",
     ]
 
     list_filter = ["ticket_type__camp", "used", "ticket_type", "order", "product"]
 
     search_fields = ["uuid", "order__id", "order__user__email", "name", "email"]
 
+    def product_quantity(self, ticket):
+        orp = OrderProductRelation.objects.get(
+            product=ticket.product, order=ticket.order
+        )
+
+        return (
+            str(orp.quantity) if ticket.ticket_type.single_ticket_per_product else "1"
+        )
+
+    product_quantity.short_description = "Quantity"
+
 
 class ShopTicketInline(admin.TabularInline):
     model = ShopTicket

src/tickets/factories.py

@@ -0,0 +1,18 @@
+import factory
+
+from factory.django import DjangoModelFactory
+
+
+class TicketTypeFactory(DjangoModelFactory):
+    class Meta:
+        model = "tickets.TicketType"
+
+    name = factory.Faker("sentence")
+    camp = factory.SubFactory("camps.factories.CampFactory")
+
+
+class ShopTicketFactory(DjangoModelFactory):
+    class Meta:
+        model = "tickets.ShopTicket"
+
+    ticket_type = factory.SubFactory(TicketTypeFactory)

src/tickets/migrations/0013_tickettype_single_ticket_per_product.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2.3 on 2019-07-30 20:49
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tickets', '0012_auto_20190724_2037'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='tickettype',
+            name='single_ticket_per_product',
+            field=models.BooleanField(default=False, help_text='Only create one ticket for a product/order pair no matter the quantity. Useful for products which are bought in larger quantity (ie. village chairs)'),
+        ),
+    ]

src/tickets/models.py

@@ -18,6 +18,13 @@ class TicketType(CampRelatedModel, UUIDModel):
     name = models.TextField()
     camp = models.ForeignKey("camps.Camp", on_delete=models.PROTECT)
     includes_badge = models.BooleanField(default=False)
+    single_ticket_per_product = models.BooleanField(
+        default=False,
+        help_text=(
+            "Only create one ticket for a product/order pair no matter the quantity. "
+            "Useful for products which are bought in larger quantity (ie. village chairs)"
+        ),
+    )
 
     def __str__(self):
         return "{} ({})".format(self.name, self.camp.title)