[cgiapp] Constraint routines in CGI::A::ValidateRM

[John Day <suppressed>]

As a result of my question yesterday I finally started to understand how the constraint routines work and re-read the doc's for all the modules again.

Now, lets say I have a sign-up form. If somebody is signing up I want to check if the username or the email address are already in use. If they are I do not want to open a new account. When I call the constraint routine I can pass variables from within the DFV object, but can I pass something like a DBI database handle?



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