fix

core/apps/admin_panel/serializers/product.py

@@ -7,7 +7,7 @@ class AdminProductListSerializer(serializers.ModelSerializer):
     class Meta:
         model = Product
         fields = [
-            'id', 'name_uz', 'name_ru', 'image', 'category', 'price', 'description_uz', 'description_ru', 'unity', 'tg_id', 'code', 'article', 'quantity_left'
+            'id', 'name_uz', 'name_ru', 'image', 'category', 'price', 'description_uz', 'description_ru', 'unity', 'tg_id', 'code', 'article', 'quantity_left', 'min_quantity'
         ]
     
     def get_category(self, obj):
@@ -21,7 +21,7 @@ class ProductSerializer(serializers.ModelSerializer):
     class Meta:
         model = Product
         fields = [
-            'name_uz', 'name_ru', 'image', 'category', 'price', 'description_uz', 'description_ru', 'unity', 'tg_id', 'code', 'article', 'quantity_left'
+            'name_uz', 'name_ru', 'image', 'category', 'price', 'description_uz', 'description_ru', 'unity', 'tg_id', 'code', 'article', 'quantity_left', 'min_quantity'
         ]
         extra_kwargs = {
             'image': {'required':False},

core/apps/orders/migrations/0009_alter_orderitem_quantity.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2 on 2025-09-06 17:05
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('orders', '0008_alter_order_payment_type'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='orderitem',
+            name='quantity',
+            field=models.FloatField(),
+        ),
+    ]

core/apps/orders/models/order.py

@@ -37,7 +37,7 @@ class Order(BaseModel):
 
 class OrderItem(BaseModel):
     order = models.ForeignKey(Order, on_delete=models.CASCADE, related_name='items')
-    quantity = models.PositiveIntegerField()
+    quantity = models.FloatField()
     price = models.PositiveBigIntegerField()
     product = models.ForeignKey(Product, on_delete=models.CASCADE, related_name='items', null=True)
 

core/apps/orders/serializers/order.py

@@ -10,7 +10,7 @@ from core.apps.orders.tasks.order_item import send_orders_to_tg_bot
 
 class OrderItemCreateSerializer(serializers.Serializer):
     product_id = serializers.UUIDField()
-    quantity = serializers.IntegerField()
+    quantity = serializers.FloatField()
 
     def validate(self, data):
         product = Product.objects.filter(id=data['product_id']).first()

core/apps/products/migrations/0010_product_min_quantity.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2 on 2025-09-06 17:39
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('products', '0009_alter_category_options_category_order'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='product',
+            name='min_quantity',
+            field=models.FloatField(null=True),
+        ),
+    ]

core/apps/products/models/product.py

@@ -26,6 +26,7 @@ class Product(BaseModel):
     article = models.CharField(max_length=200, null=True, blank=True, unique=True)
     code = models.CharField(max_length=200, null=True, blank=True)
     quantity_left = models.PositiveBigIntegerField(default=0)
+    min_quantity = models.FloatField(null=True)
 
     def __str__(self):
         return self.name

core/apps/products/serializers/product.py

@@ -11,7 +11,7 @@ class ProductListSerializer(serializers.ModelSerializer):
     class Meta:
         model = Product
         fields = [
-            'id', 'name', 'image', 'price', 'description', 'liked', 'unity',
+            'id', 'name', 'image', 'price', 'description', 'liked', 'unity', 'min_quantity'
         ]
 
     def get_liked(self, obj):