Handle empty user and participant names

Author: renefs

newdle/core/util.py

@@ -107,20 +107,22 @@ def render_user_avatar(initial, size):
 
 
 def avatar_payload_from_user_info(user_info):
+    initial = user_info['name'][0].upper() if user_info['name'] else '?'
     return secure_serializer.dumps(
         {
             'email': user_info['email'],
-            'initial': user_info['name'][0].upper(),
+            'initial': initial,
         },
         salt='avatar-payload',
     )
 
 
 def avatar_payload_from_participant(participant):
+    initial = participant.name[0].upper() if participant.name else '?'
     return secure_serializer.dumps(
         {
             'email': participant.email,
-            'initial': participant.name[0].upper(),
+            'initial': initial,
         },
         salt='avatar-payload',
     )

newdle/models.py

@@ -120,6 +120,7 @@ class Participant(db.Model):
     __tablename__ = 'participants'
     __table_args__ = (
         CheckConstraint('(email IS NULL) = (auth_uid IS NULL)', 'email_uid_null'),
+        CheckConstraint("name != ''", name='name_not_empty'),
     )
 
     id = db.Column(db.Integer, primary_key=True)