How do I use exception handler to catch a 419 page expired and convert it into other kind of exception if the route is contact form?

[ProteanCode]

Hi there

I just made a trick to set the correct CSRF token on contact form if an user clicked on the submit button.

While most of the bots dont really send a click event to the button but deserializes the form into an HTTP request and sends it with curl, it may help fight spam emails.

The problem is there will be a lot of 419 exceptions thrown for every Chinese spambot crawling the site so I do want to somehow handle the case when a 419 exception has been thrown from route named ie. 'contactForm' and remap it into BotSpamException and discard it