# CGI::Application code...

# The main runmode, where I show the page
#
sub foo
{
    my $self = shift;
    my $s    = $self->session();

    my $tmpl = $self->load_tmpl('foo');

    # ... load data in the template, as long
    # as the missing and invalid fields, that
    # come from the session (see foo_update()).

    foo_view( $tmpl, $data, $s->param('missing'), $s->param('invalid')
+);

    return $tmpl->output();
}

sub foo_update
{
    my $self = shift;
    my $q    = $self->query();
    my $s    = $self->session();

    my %form = $q->Vars();                                            
+          
    my $results = Data::FormValidator->check( \%form, $profile );     
+          
                                                                      
+          
    if ($results->has_invalid() or $results->has_missing()) {         
+          
                                                                      
+          
        $s->param( missing => [ $results->missing() ] ,               
+          
                   invalid => [ $results->invalid() ] );              
+          
                                                                      
+          
        $self->redirect( { rm => 'foo' } );                           
+          
    }                                                                 
+          
    else {                                                            
+          
                                                                      
+          
        # Data are good, we proceed...                                
+          
        $self->redirect( { rm => 'bar' } );                           
+          
    }                                                                 
+          
}
[download]

# This is called by foo() from the main application, just before
# to display the page
#
sub foo_view
{
    my $template   = shift;
    my $date       = shift;
    my $missing    = shift;
    my $invalid    = shift;

    $template->param( "missing_$_" => 1 ) for @$missing;
    $template->param( "invalid_$_" => 1 ) for @$invalid;

    # [...]

    return $template;
}
[download]

<TMPL_IF invalid_some_field>Bad boy! This is an error message.</TMPL_I
+F>
[download]

• Tutorials
  • HTML::Template Tutorial
  • Using HTML::Template
• Data::FormValidator
  • Data::FormValidator::Tutorial
• CGI::Application::ValidateRM

    <tr> 
      <td align="right" valign="baseline">Last Name :</td>
      <td align="left"><input type="text" name="last_name" value = "<t
+mpl_var name=last_name>">
      <tmpl_if err_last_name><br><font color="#FF0000"><strong>Please 
+input your last name</strong></font></tmpl_if>
      </td>
    </tr>
[download]

use Data::FormValidator;
  
  my $Profile = {
    required => [qw(first_name last_name sex city)]
  };
  
  my $results = Data::FormValidator->check($Form,$Profile);
  if($results->has_invalid or $results->has_missing){
    my $output;
    
  foreach my $f ( $results->missing ) {
        $output = $f. " is missing\n<br>";
  }
[download]

Update Added <code> tags. larsen