[Mason] changing an attrib?

[Kris Yates]

I have a simple form (signup.html).. It shows visitors the form, and upon submission, it validates the POST and, if all is well, it saves the POST to a database, then finally displays "thank you for posting".   Problem is, if someone sits there and keeps refreshing, it will keep reposting.   Not sure what to do, I put a redirect after the database save to a non-existing page called submit-signup.html.     So now, when someone submits, it redirects them to my dhandler.  I am trying to change the HTML title tag but not sure what to do.   Currently, I have:   % if($apache_request_uri =~ /submit-signup/){                             % $m->base_comp->attr('page_title') = "SignUp Complete"; % } % else { Error 404: <% $apache_request_uri %> is an invalid URI. % }   Apparently you cannot change an attrib dynamically with PERL code as I have done.  You cant dymically change a method either.. so what do I do to reach my goal here?  What does Mason have in place to handle this?  I'd rather not have to redirect them but I dont know how to keep people from refreshing and filling up my database.  What should I do??   Thanks for any help, Kris