feat(api): Custom exception UnknownTicketType

for use when attempting to detect ticket type

ref: #248 #365

app/core/serializers/ticket.py

@@ -6,6 +6,7 @@ from access.serializers.teams import TeamBaseSerializer
 
 from app.serializers.user import UserBaseSerializer
 
+from api.exceptions import UnknownTicketType
 from core.models.ticket.ticket import Ticket
 
 from core.fields.badge import Badge, BadgeField
@@ -146,6 +147,8 @@ class TicketModelSerializer(TicketBaseSerializer):
 
             is_valid = False
 
+            raise UnknownTicketType()
+
 
         return is_valid