add special_discount_code to order model

backend/order/admin.py

@@ -137,7 +137,7 @@ class OrderAdmin(ModelAdmin, ImportExportModelAdmin):
     list_filter = ['is_paid', 'status']
     actions_list = ['redirect_to_learn', 'udpate_bank_status']
     list_display = ['order_id', 'user', 'is_paid', 'status', 'discount_code', 'address', 'download_invoice_button']
-    readonly_fields = ('created_at', 'tax', 'final_price', 'cart_total', 'discount_amount', 'discount_code', 'user', 'address', 'is_paid', 'download_invoice_link')
+    readonly_fields = ('created_at', 'tax', 'final_price', 'cart_total', 'discount_amount', 'discount_code', 'user', 'address', 'is_paid', 'special_discount_code','download_invoice_link')
     compressed_fields = True
     warn_unsaved_form = True
     # exclude = ('bank_records',)

backend/order/migrations/0042_ordermodel_special_discount_code_and_more.py

@@ -0,0 +1,25 @@
+# Generated by Django 5.1.2 on 2026-01-04 06:13
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('account', '0034_add_telegram_chat_id_to_shop'),
+        ('order', '0041_shopordermodel_address_shopordermodel_address_city_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='ordermodel',
+            name='special_discount_code',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, to='account.specialdiscountcode', verbose_name='کدتخفیف خاص'),
+        ),
+        migrations.AddField(
+            model_name='shopordermodel',
+            name='special_discount_code',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, to='account.specialdiscountcode', verbose_name='کدتخفیف خاص'),
+        ),
+    ]

backend/order/models.py

@@ -173,6 +173,8 @@ class OrderModel(models.Model):
     is_paid = models.BooleanField(default=False, verbose_name="وضعیت پرداخت")
     discount_code = models.ForeignKey(
         DiscountCode, on_delete=models.PROTECT, null=True, blank=True, verbose_name="کدتخفیف")
+    special_discount_code = models.ForeignKey(
+        SpecialDiscountCode, on_delete=models.PROTECT, null=True, blank=True, verbose_name="کدتخفیف خاص")
     status = models.CharField(max_length=20, choices=STATUS_CHOICES,
                               default='ADMIN_PENDING', verbose_name="وضعیت سفارش")
     discount_amount = models.BigIntegerField(
@@ -290,6 +292,8 @@ class ShopOrderModel(models.Model):
     subtotal = models.BigIntegerField(verbose_name='جمع جزئیات', default=0)
     items_count = models.PositiveIntegerField(default=0)
     discount_amount = models.BigIntegerField(default=0, verbose_name='تخفیف اختصاصی فروشگاه')
+    special_discount_code = models.ForeignKey(
+        'account.SpecialDiscountCode', on_delete=models.PROTECT, null=True, blank=True, verbose_name='کدتخفیف خاص')
     special_discount_amount = models.BigIntegerField(default=0, verbose_name='تخفیف ویژه اختصاصی')
     commission_percent = models.DecimalField(max_digits=5, decimal_places=2, verbose_name='درصد کمیسیون')
     commission_amount = models.BigIntegerField(default=0, verbose_name='مبلغ کمیسیون')

backend/order/signals.py

@@ -174,6 +174,7 @@ def create_shop_orders_on_payment(sender, instance: OrderModel, created, **kwarg
                 subtotal=shop_subtotal,
                 items_count=sum(int(it.quantity) for it in items_list),
                 discount_amount=allocated_discount,
+                special_discount_code=instance.special_discount_code,
                 special_discount_amount=allocated_special_discount,
                 commission_percent=commission_percent_value,
                 commission_amount=commission_amount,

backend/order/views.py

@@ -338,6 +338,7 @@ class PaymentView(APIView):
                     address=cart.address,
                     created_at=timezone.now().date(),
                     discount_code=cart.discount_code,
+                    special_discount_code=cart.special_discount_code,
                     discount_amount=cart.discount_code_amount,
                     special_discount_total=special_total,
                     tax=cart.tax_amount,