shared: district api unique_together field qoshildi

core/apps/dashboard/serializers/district.py

@@ -36,6 +36,8 @@ class DistrictCreateSerializer(serializers.Serializer):
         if not user:
             raise serializers.ValidationError({"user_id": "Foydalanuvchi topilmadi"})
         data['user'] = user
+        if District.objects.filter(name=data['name'], user=user).exists():
+            raise serializers.ValidationError({'name': "District qo'shib bolmadi"})
         return data
 
     def create(self, validated_data):

core/apps/shared/migrations/0018_alter_district_unique_together.py

@@ -0,0 +1,19 @@
+# Generated by Django 5.2 on 2025-12-11 13:15
+
+from django.conf import settings
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('shared', '0017_alter_support_district'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name='district',
+            unique_together={('user', 'name')},
+        ),
+    ]

core/apps/shared/models/district.py

@@ -14,3 +14,6 @@ class District(BaseModel):
 
     def __str__(self):
         return self.name
+
+    class Meta:
+        unique_together = ('user', 'name')

core/apps/shared/views/district.py

@@ -53,6 +53,9 @@ class DistrictCreateApiView(generics.CreateAPIView, ResponseMixin):
             serializer = self.serializer_class(data=request.data)
             if serializer.is_valid():
                 name = serializer.validated_data.get('name')
+                if District.objects.filter(name=name, user=request.user).exists():
+                    return self.failure_response(message="District qo'shib bolmadi")
+                
                 obj = District.objects.create(name=name, user=request.user)
                 return self.success_response(
                     data=district_serializers.DistrictSerializer(obj).data,