small postive integer filed for order item model quantity

backend/order/migrations/0010_alter_orderitemmodel_quantity.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.1.2 on 2025-03-06 17:32
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('order', '0009_alter_ordermodel_created_at'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='orderitemmodel',
+            name='quantity',
+            field=models.PositiveSmallIntegerField(verbose_name='تعداد'),
+        ),
+    ]

backend/order/models.py

@@ -96,7 +96,7 @@ class OrderModel(models.Model):
 
 class OrderItemModel(models.Model):
     order = models.ForeignKey(OrderModel, on_delete=models.CASCADE, related_name='items', verbose_name='سفارش')
-    quantity = models.SmallIntegerField(verbose_name="تعداد")
+    quantity = models.PositiveSmallIntegerField(verbose_name="تعداد")
     product = models.ForeignKey(ProductVariant, on_delete=models.PROTECT, verbose_name="محصول")
     class Meta:
         verbose_name = 'ایتم سبد خرید'