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

api/funkwhale_api/common/admin.py

@@ -0,0 +1,19 @@
+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