Add get_last_name method for anonymous players

tournaments/models/player_registration.py

@@ -235,3 +235,8 @@ class PlayerRegistration(TournamentSubModel):
         if self.contact_email:
             return self.contact_email
         return self.email
+
+    def get_last_name(self):
+        if self.is_anonymous:
+            return "Anonyme"
+        return self.last_name

tournaments/models/team_registration.py

@@ -109,7 +109,7 @@ class TeamRegistration(TournamentSubModel):
     def formatted_team_names(self):
         if self.name:
             return self.name
-        names = [pr.last_name for pr in self.players_sorted_by_rank][:2]  # Take max first 2
+        names = [pr.get_last_name() for pr in self.players_sorted_by_rank][:2]  # Take max first 2
         joined_names = " / ".join(names)
         if joined_names:
             return f"Paire {joined_names}"