Add basic query to find items

core/migrations/0002_productvariant_max_order_per_customer.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.1.6 on 2023-06-19 23:07
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='productvariant',
+            name='max_order_per_customer',
+            field=models.PositiveIntegerField(blank=True, null=True),
+        ),
+    ]

core/migrations/0003_rename_max_order_per_customer_productvariant_order_limit.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.1.6 on 2023-06-20 02:59
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0002_productvariant_max_order_per_customer'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='productvariant',
+            old_name='max_order_per_customer',
+            new_name='order_limit',
+        ),
+    ]

core/models.py

@@ -192,11 +192,12 @@ class ProductVariant(models.Model):
         validators=[MinValueValidator(0)]
     )
     sorting = models.PositiveIntegerField(blank=True, null=True)
+    order_limit = models.PositiveIntegerField(blank=True, null=True)
 
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
 
-    objects = ProductVariantManager()
+    #objects = ProductVariantManager()
 
     def __str__(self):
         return f'{self.product}: {self.name}'

dashboard/forms.py

@@ -27,6 +27,7 @@ class ProductVariantUpdateForm(forms.ModelForm):
             'track_inventory',
             'stock',
             'sorting',
+            'order_limit',
             'image'
         ]
 

storefront/cart.py

@@ -195,6 +195,9 @@ class Cart:
         self.items.append(new_item)
         self.save()
 
+    def get_item_by_pk(self, pk):
+        return next(i for i, v in enumerate(self) if v.variant.pk == pk)
+
     def update_item_quantity(self, item_index, quantity):
         self.items[item_index].quantity = quantity
         self.save()

storefront/views.py

@@ -355,6 +355,8 @@ class OrderCreateView(CreateView):
 
         cart = Cart(request)
 
+
+
         if cart.coupon is not None:
             try:
                 user = User.objects.get(
@@ -362,6 +364,22 @@ class OrderCreateView(CreateView):
                 )
             except User.DoesNotExist:
                 user = None
+
+            if user:
+                variants_ordered = ProductVariant.objects.filter(
+                    pk__in=cart.item_variant_pks,
+                    order_lines__order__customer=user,
+                    order_lines__order__status="fulfilled"
+                ).values("id", "order_limit").annotate(
+                    num_ordered=Sum("order_lines__quantity")
+                ).order_by()
+
+                for item in cart:
+                    if item.quantity
+
+
+
+
             if user in cart.coupon.users.all():
                 cart.remove_coupon()
                 messages.warning(request, 'Coupon already used.')