🗃 Make order sum a decimal field

bbs/api/types/users.py

@@ -1,5 +1,6 @@
 from datetime import datetime
 from typing import List
+from decimal import Decimal
 
 import strawberry
 import strawberry_django
@@ -25,7 +26,7 @@ class UserProfile:
     balance: auto
     image: auto
     last_purchase_date: datetime
-    order_sum_total: float
+    order_sum_total: Decimal
 
     @strawberry.field()
     def top_months(self) -> List[TopMonth]:

bbs/forms.py

@@ -2,9 +2,11 @@ from django import forms
 
 from bbs.models import InventoryTransaction, Product
 
+MAX_DIGITS = 9
+DECIMAL_PLACES = 1
 
 class InventoryTransactionForm(forms.ModelForm):
-    unit_price = forms.FloatField(required=True, localize=True)
+    unit_price = forms.DecimalField(max_digits=MAX_DIGITS, decimal_places=DECIMAL_PLACES, required=True, localize=True)
 
     def __init__(self, *args, **kwargs):
         # Only show active products

bbs/migrations/0003_alter_order_order_sum.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.0.2 on 2023-06-28 19:11
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bbs', '0002_alter_inventorytransaction_amount_and_more'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='order',
+            name='order_sum',
+            field=models.DecimalField(db_column='sum', decimal_places=1, max_digits=9),
+        ),
+    ]

bbs/models.py

@@ -2,6 +2,7 @@ import hashlib
 from datetime import datetime
 from itertools import groupby
 from typing import Type
+from decimal import Decimal
 
 from django.conf import settings
 from django.db import models
@@ -112,7 +113,7 @@ class Order(models.Model):
         blank=True,
         related_name="orders",
     )
-    order_sum = models.FloatField(db_column="sum")
+    order_sum = models.DecimalField(db_column="sum", max_digits=MAX_DIGITS, decimal_places=DECIMAL_PLACES)
     created = models.DateTimeField(auto_now_add=True)
 
     objects = OrderManager()
@@ -234,7 +235,7 @@ class UserProfile(models.Model):
     def product_order_stats(self):
         return OrderLine.objects.filter(order__customer__pk=self.pk).product_order_stats()
 
-    def order_sum_total(self) -> float:
+    def order_sum_total(self) -> Decimal:
         return Order.objects.filter(customer_id=self.user_id).aggregate(sum=Sum("order_sum"))["sum"] or 0
 
     def image_url(self) -> str: