Dear Fellow Monks,

Back when I was doing simple subtitution s/var_name/$var_name I used a pad function to take the results from a database that were zero but perl insisted were blank scalars and print them as "0"

I am now using HTML::Template and using a Module to query the data my attempts have failed to get "0" on the output. Any ideas I am sure its simple but I have missed something here. And I'd rather not put the padding in the main module

# pad adds leading zeros to a string

### FROM THE MODULE THAT QUERIES THE DATA ####

sub pad( )
{
   my $output;

   my ($string, $length)=@_;
        
   if( $string eq "" )
    {
       $output = "0";

    }
   else
   {
       my $padlength=$length-length($string);
      $output = "0"x$padlength.$string;

   }

   return $output;

} 



sub get_number_prereg_adult( $ )
{
   my $data;
   my $query;    

   my $self = shift;

   my $dbh  = $self->{dbh};    
    

     my $sqlQuery = "SELECT COUNT(*)
                      FROM PREREGDATA
                     WHERE GroupID  = $self->{'group_id'}
                       AND Category = \'1\'";
                        
   $query = $dbh->prepare( $sqlQuery );
     
   $query->execute() || die $dbh->errstr;
   
   if( $data = $query->fetchrow_array() )
   {        
       $self->{error_type}   = "";   
       $self->{error_string} = "";
       return( pad( $data, 1 ) );

   }
   else
   {
       $self->{error_type}   = "variable returned no value";   
       $self->{error_string} = "variable returned no value";    
       return( undef ); 
   }    
   
}


### FROM THE MODULE THAT USES HTML TEMPLATE

   #set template page
   $template = HTML::Template->new( filename=>"update_group_informatio
+n_template.htm" );
    


                            
                            
    $template->param( number_pre_reg_adult_variable_string      => $qu
+ery_module->get_number_prereg_adult   );

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In reply to HTML::Template Modules and Zeros by Angel

Title:
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