fiux

core/apps/orders/admin/party.py

@@ -11,7 +11,7 @@ class PartyAmountInline(admin.StackedInline):
 
 @admin.register(Party)
 class PartyAdmin(admin.ModelAdmin):
-    list_display = ['mediator', 'delivery_date', 'payment_date', 'is_deleted']
+    list_display = ['number','mediator', 'delivery_date', 'payment_date', 'is_deleted']
     inlines = [PartyAmountInline]    
 
 

core/apps/orders/apps.py

@@ -7,3 +7,4 @@ class OrdersConfig(AppConfig):
 
     def ready(self):
         from . import admin 
+        from . import signals

core/apps/orders/migrations/0022_alter_party_number.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.4 on 2025-08-23 17:55
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('orders', '0021_party_currency'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='party',
+            name='number',
+            field=models.PositiveIntegerField(default=0),
+        ),
+    ]

core/apps/orders/models/party.py

@@ -27,7 +27,7 @@ class Party(BaseModel):
         ('REJECTED', 'rad etilgan'),
     )
 
-    number = models.PositiveIntegerField(default=1)
+    number = models.PositiveIntegerField(default=0)
     orders = models.ManyToManyField(Order, related_name='parties', null=True, blank=True)
     mediator = models.ForeignKey(User, on_delete=models.CASCADE, related_name='parties')
     # dates
@@ -59,15 +59,6 @@ class Party(BaseModel):
     def __str__(self):
         return f'P - {self.number}'
     
-    def save(self, *args, **kwargs):
-        if not self.pk:
-            last_party = Party.objects.order_by('number').last()
-            if last_party:
-                self.number = last_party.number + 1
-            else:
-                self.number = 1
-        return super().save(*args, **kwargs)
-
     class Meta:
         verbose_name = 'Partiya'
         verbose_name_plural = 'Partiyalar'

core/apps/orders/signals/__init__.py

@@ -0,0 +1 @@
+from .party import *

core/apps/orders/signals/party.py

@@ -0,0 +1,12 @@
+from django.db.models.signals import post_save
+from django.dispatch import receiver
+
+from core.apps.orders.models import Party
+
+
+@receiver(post_save, sender=Party)
+def set_party_number(sender, instance, created, **kwargs):
+    if created:
+        last_party = Party.objects.order_by('number').last()
+        instance.number = (last_party.number + 1) if last_party else 1
+        instance.save(update_fields=["number"])