Great post, ++ to parent.

I to use ValidateRM with great success. The use use of VRM 'encouraged' me to keep each rm to just a single presentation screen, because when using VRM to process a form submission you call the orginal form presentation run mode to (re)produce the screen with errors message and data overlaid. This works best if the orginal run mode simply does presentation.

I'd like to add one useful tip. VRM requires HTML::FillInForm to repopulate the info into the presenation form. This is a very handy module for prefilling out a form in your run mode, if, for example you are doing a edit operation on something you already have in the database. A code example of filling out into a template file:

... code to setup my $t template, and get
info from the database into %fdat
would be here ...

   my $html = $t->output;
   if ( %fdat ) {
      my $fif = new HTML::FillInForm;
      $html = $fif->fill(scalarref  => \$html,
                          fdat   =>  \%fdat );
   }

   return $html;  # this is the filled-out HTML file
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