# Does nothing except printing the form.
# Using sessions you can pass to it an error_message,
# for example.
#
sub login                                                                       
{   
    my $self = shift;                                                           
    
    my $tmpl = $self->load_tmpl( 'login' );                                     
    
    return $tmpl->output();                                                     
}   

sub login_update                                                                
{   
    my $self = shift;                                                           
    my $q    = $self->query;
  
    # Fetch username and password from the form
    #  
    
    if ( PASSWORD CORRECT ) {        
        
        $self->redirect( { rm => 'first_panel' } );           
    }
    else {

        # It could store some useful info in a session,
        # for example the error message.
        #
        $self->redirect( { rm => 'login' } );
    }

    return;
}