Hello, I am new to Web2py, and while I am going through the manual, I encountered the following code:
auth.messages.verify_email = 'Click on the link http://' + \ request.env.http_host + \ URL(r=request,c='default',f='user',args=['verify_email']) + \ '/%(key)s to verify your email' I've tried the code, and somehow Web2py is able to resolve '%(key)s' to the appropriate string stored in 'registration_key' field of the corresponding user. I wonder how this is done? A walk-through of this miraculous process in Web2py would be much appreciated.