User can end up with multiple tickets

[evildmp]

• Order no. 4D0C
• includes a ticket with a bogus address
• After payment:
  • system emailed the admin: "unknown or illegal alias: @mac.com"
  • I got a 500 error from the application
  • the system no longer works for the user who placed the order - no links to functions are available
  • this persists after logging out and in again

• So far, I can't replicate with a bogus address (e.g. http://ironcage-dev.herokuapp.com/tickets/orders/719E/)

[inglesp]

Your user has ended up with two tickets, which the system assumes should never happen. This would explain why the links are missing on the page, as a call to user.tickets.get() blows up in a template, which is then ignored. (Why oh why does the Django template language swallow exceptions when DEBUG = False?)

I expect this is the cause of the 500 exception, although I can't be sure as we haven't set up logging properly yet. (Why oh why does Django not log exceptions to the console by default when DEBUG = False?)

The only way I can see for this to have happened is for you to have started two orders in parallel. We should enforce that a user can only have one ticket at the database level.

The bogus address is almost certainly a red herring here, so I'll rename the issue.

[inglesp]

Fixed through:

• 46b611b3756616e2d99aa16e4176e3ad1043dd00
• 399762ab9ad87df9913bc9e1fc4e498ace7ba457
• ba5dfe402bd91eff4b16a5a8626911d8f06276a1
• fac43819825caed3931a625c21ab4fcb64ff3bcd