Synopsis

  # very simple validation, just check to see if name field was filled out
  my $input_profile = {required => [ qw ( name ) ]};
  # validate user input
  unless($model->pkit_validate_input($input_profile)){
    # user must have not filled out name field, 
    # i.e. $apr->param('name') = $model->input('name') is
    # not set, so go back to original form
    # if you used a <PKIT_ERRORFONT NAME="name"> tag, then it will be set to
    # red
    $model->pkit_internal_redirect('orig_form');
    return;
  }