Extend members app: add user signals for automatic Member profile creation, tests for Member behavior, and updated authentication backends

members/signals.py

@@ -0,0 +1,19 @@
+import secrets
+
+from django.contrib.auth import get_user_model
+from django.db.models.signals import post_save
+from django.dispatch import receiver
+
+from .models import Member
+
+User = get_user_model()
+
+
+@receiver(post_save, sender=User)
+def create_member_profile(instance, *args, **kwargs) -> None:
+    """Creates a Member profile for a newly created user."""
+    member, created = Member.objects.get_or_create(user=instance)
+
+    if not member.access_token:
+        member.access_token = secrets.token_urlsafe(64)
+        member.save(update_fields=["access_token"])