Move local config creation.

see #890

modoboa/core/apps.py

@@ -1,6 +1,7 @@
 """Core config for admin."""
 
 from django.apps import AppConfig
+from django.db.models import signals
 
 
 BASE_EVENTS = [
@@ -66,3 +67,5 @@ class CoreConfig(AppConfig):
         load_core_settings()
 
         from . import handlers
+
+        signals.post_migrate.connect(handlers.create_local_config, sender=self)

modoboa/core/handlers.py

@@ -6,8 +6,12 @@ from django.db.models.signals import post_delete
 from django.dispatch import receiver
 from django.utils.translation import ugettext as _
 
+from django.contrib.sites import models as sites_models
+
 from reversion import revisions as reversion
 
+from . import models
+
 
 @receiver(reversion.post_revision_commit)
 def post_revision_commit(sender, **kwargs):
@@ -63,3 +67,11 @@ def log_object_removal(sender, instance, **kwargs):
         "user": get_request().user.username
     }
     logger.critical(msg)
+
+
+def create_local_config(sender, **kwargs):
+    """Create local config if needed."""
+    if models.LocalConfig.objects.using(kwargs["using"]).exists():
+        return
+    models.LocalConfig.objects.create(
+        site=sites_models.Site.objects.get_current())

modoboa/core/migrations/0008_localconfig.py

@@ -7,13 +7,6 @@ import django.db.models.deletion
 import jsonfield.fields
 
 
-def create_local_config(apps, schema_editor):
-    """Create local config entry."""
-    Site = apps.get_model("sites", "Site")
-    LocalConfig = apps.get_model("core", "LocalConfig")
-    LocalConfig.objects.create(site=Site.objects.get_current())
-
-
 class Migration(migrations.Migration):
 
     dependencies = [
@@ -31,5 +24,4 @@ class Migration(migrations.Migration):
                 ('site', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='sites.Site')),
             ],
         ),
-        migrations.RunPython(create_local_config),
     ]