Tolto tema di default con Django e warning brutto

admin_interface/context_processor.py

@@ -10,8 +10,8 @@ def get_active_theme(request):
         obj = objs_manager.first()
         if obj:
             obj.set_active()
-        else:
+        # else:
-            obj = objs_manager.create()
+        #     obj = objs_manager.create()
 
     elif objs_active_count == 1:
         obj = objs_active_ls[0]

admin_interface/migrations/0029_auto_20221025_1559.py

@@ -0,0 +1,30 @@
+# Generated by Django 4.0.3 on 2022-10-25 13:59
+
+from django.db import migrations
+from django.db import transaction, connection
+
+def forward(apps, schema_editor):
+    Theme = apps.get_model("admin_interface", "Theme")
+    if len(Theme.objects.all()) == 1 and Theme.objects.first().name == 'Django':
+        with transaction.atomic():
+            cursor = connection.cursor()
+            cursor.execute("""truncate table "admin_interface_theme" restart identity;""")
+
+def reverse(apps, schema_editor):
+    pass
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('admin_interface', '0028_alter_theme_demo'),
+    ]
+
+    operations = [
+        migrations.RunPython(forward, reverse),
+        migrations.AlterField(
+            model_name='usertheme',
+            name='user',
+            field=models.OneToOneField(null=True, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
+        ),
+    ]

admin_interface/models.py

@@ -20,8 +20,8 @@ class UserTheme(models.Model):
         verbose_name = 'Users theme'
         verbose_name_plural = 'Users themes'
 
-    user = models.ForeignKey(
+    user = models.OneToOneField(
-        'auth.User', on_delete=models.CASCADE, null=True, unique=True)
+        'auth.User', on_delete=models.CASCADE, null=True)
     theme = models.ForeignKey('Theme', on_delete=models.CASCADE)
 
 
@@ -65,8 +65,8 @@ class Theme(models.Model):
             obj = objs_manager.all().first()
             if obj:
                 obj.set_active()
-            else:
+            # else:
-                obj = objs_manager.create()
+            #     obj = objs_manager.create()
 
         elif objs_active_count == 1:
             obj = objs_active_ls[0]