Ensure we always use raw_ids for related fields in django's admin

api/config/urls.py

@@ -5,7 +5,7 @@ from django.conf import settings
 from django.conf.urls import url
 from django.urls import include, path
 from django.conf.urls.static import static
-from django.contrib import admin
+from funkwhale_api.common import admin
 from django.views import defaults as default_views
 
 

api/funkwhale_api/common/admin.py

+from django.contrib.admin import register as initial_register, site, ModelAdmin  # noqa
+from django.db.models.fields.related import RelatedField
+
+
+def register(model):
+    """
+    To make the admin more performant, we ensure all the the relations
+    are listed under raw_id_fields
+    """
+
+    def decorator(modeladmin):
+        raw_id_fields = []
+        for field in model._meta.fields:
+            if isinstance(field, RelatedField):
+                raw_id_fields.append(field.name)
+        setattr(modeladmin, "raw_id_fields", raw_id_fields)
+        return initial_register(model)(modeladmin)
+
+    return decorator

api/funkwhale_api/favorites/admin.py

-from django.contrib import admin
+from funkwhale_api.common import admin
 
 from . import models
 

api/funkwhale_api/federation/admin.py

-from django.contrib import admin
+from funkwhale_api.common import admin
 
 from . import models
 from . import tasks

api/funkwhale_api/history/admin.py

-from django.contrib import admin
+from funkwhale_api.common import admin
 
 from . import models
 

api/funkwhale_api/music/admin.py

-from django.contrib import admin
+from funkwhale_api.common import admin
 
 from . import models
 

api/funkwhale_api/playlists/admin.py

-from django.contrib import admin
+from funkwhale_api.common import admin
 
 from . import models
 

api/funkwhale_api/radios/admin.py

-from django.contrib import admin
+from funkwhale_api.common import admin
 
 from . import models
 

api/funkwhale_api/users/admin.py

@@ -2,7 +2,7 @@
 from __future__ import absolute_import, unicode_literals
 
 from django import forms
-from django.contrib import admin
+from funkwhale_api.common import admin
 from django.contrib.auth.admin import UserAdmin as AuthUserAdmin
 from django.contrib.auth.forms import UserChangeForm, UserCreationForm
 from django.utils.translation import ugettext_lazy as _