Problem

If a user who already has a Comet card linked to their Club Manager account gets a new Comet Card and attempts to check into an event with that new Comet Card, there is no easy way in the UI to remove the old Comet card serial number that is linked to their account so that a new one can be linked. As expected, when club manager sees a Comet card serial number that is not in the database, it will take staff members to the user look-up page for them to link that Comet card to an existing user in the database. However, it isn't possible to update the Comet card serial number for a user that already has a Comet card linked. The current workaround is to remove the old Comet Card serial number in the admin UI then return to the user lookup page and perform the link there, but this adds a lot of extra clicks and time to a process that needs to happen quickly if we're checking in people at large events.

Solution

On the user lookup screen, there needs to be an option to replace out the Comet card serial number already in the db and replace it with the serial number that was just entered. BTW the comet card serial number is shown as student ID in this UI, which honestly should rename to comet card serial number since this PR is already touching this code.

UI for checking in a user who is already in the db:

UI for linking a user who is new to the database: