Expose Participant hashid over hashed user id for the badge qr code (#4370)

Author: marcoacierno

backend/api/participants/queries.py

@@ -27,9 +27,7 @@ def participant(info: Info, id: strawberry.ID, conference: str) -> Participant |
 
 
 @strawberry.field
-def ticket_id_to_user_hashid(
-    ticket_id: strawberry.ID, conference_code: str
-) -> str | None:
+def ticket_id_to_hashid(ticket_id: strawberry.ID, conference_code: str) -> str | None:
     conference = Conference.objects.filter(code=conference_code).first()
     decoded_ticket_id = decode_hashid(ticket_id)
     order_position = pretix.get_order_position(conference, decoded_ticket_id)
@@ -43,8 +41,10 @@ def ticket_id_to_user_hashid(
     if not attendee_user:
         return None
 
-    user_id = attendee_user.id
-    return encode_hashid(int(user_id), salt=settings.USER_ID_HASH_SALT, min_length=6)
+    participant = ParticipantModel.objects.filter(
+        conference=conference, user=attendee_user
+    ).first()
+    return participant.hashid
 
 
 # TODO: move this to a badge app :)
@@ -81,5 +81,5 @@ def conference_role_for_ticket_data(
 
 ParticipantQueries = create_type(
     "ParticipantQueries",
-    (participant, ticket_id_to_user_hashid, conference_role_for_ticket_data),
+    (participant, ticket_id_to_hashid, conference_role_for_ticket_data),
 )

frontend/src/pages/b/[hashid].tsx

@@ -1,23 +1,23 @@
 import type { GetServerSideProps } from "next";
 
 import { getApolloClient } from "~/apollo/client";
-import { queryTicketIdToUserHashid } from "~/types";
+import { queryTicketIdToHashid } from "~/types";
 
 export const getServerSideProps: GetServerSideProps = async ({
   req,
   params,
 }) => {
   const hashid = params.hashid as string;
   const client = getApolloClient(null, req.cookies);
-  const result = await queryTicketIdToUserHashid(client, {
+  const result = await queryTicketIdToHashid(client, {
     ticketId: hashid,
     conference: process.env.conferenceCode,
   });
 
-  if (result.data?.ticketIdToUserHashid) {
+  if (result.data?.ticketIdToHashid) {
     return {
       redirect: {
-        destination: `/profile/${result.data.ticketIdToUserHashid}`,
+        destination: `/profile/${result.data.ticketIdToHashid}`,
         permanent: false,
       },
     };

frontend/src/pages/b/query.graphql

@@ -1,3 +1,3 @@
-query TicketIdToUserHashid($ticketId: ID!, $conference: String!) {
-  ticketIdToUserHashid(ticketId: $ticketId, conferenceCode: $conference)
+query TicketIdToHashid($ticketId: ID!, $conference: String!) {
+  ticketIdToHashid(ticketId: $ticketId, conferenceCode: $conference)
 }