Hi, I am trying to write a script to display database results on several pages with links. I can display the first page of results with the correct number of links. The problem is that the links don't show the next page of the results. When clicked, nothing happens.

I'm thinking the problem is with the links. I am having a hard wrapping my brain on how to create these links properly and what exactly I should be putting in them. I'm sure I am close to getting this working, so any help would be much appreciated.

Thanks in advance.

Here is my script:

#!/usr/bin/perl

use CGI qw(:standard);
use DBI;
use warnings;
use strict; 

my (@row,$name,$path,$dsp,$count);


my $query = new CGI;
print $query->header('text/html');

print qq~
<!DOCTYPE html>
<html>
<head>
<title>Movie Search</title>
</head>

<body>

<br /><br />~;

    my $reqpage = $query->param('reqpage') || '1';    
    param('per_page');
        
    #Get total amount of rows from db
    my $dbh=DBI->connect($connectionInfo,$user,$passwd);
    my $num_rows= $dbh->selectrow_array('select count(name) from video
+ order by name');
    my $num_results_perpage = 25;
    
    # calculate the number of pages to show
    my $pagecount = int($num_rows / $num_results_perpage);
    if (($pagecount * $num_results_perpage) != $num_rows)
    {
        $pagecount++;
    }
    
    # calculate which results to show in the page
    my $firstresult = (($reqpage - 1) * $num_results_perpage) + 1;
    my $lastresult = $firstresult + $num_results_perpage - 1;
    if ($lastresult > $num_rows)
    {
        $lastresult = $num_rows;
    }
    
    # sql limit starts at 0
    my $start_point = $firstresult - 1;
    
    my $sth = $dbh->prepare("Select name,path from video order by name
+ LIMIT $start_point,$num_results_perpage"); 
    $sth->execute();
    while (@row = $sth->fetchrow_array())
    {
        $name = $row[0];
        $path = $row[1];
    
        $path =~ s/'/%27/g;
        $dsp = substr $path, 27, 255;
        print "<a href='/media/$dsp'>$name</a> <br />";
        
        $count=$count+1;
    }
    $sth->finish();
    
    # page links
    my ($prev_link, $next_link, $pagelinks, $pageno, $thislink, $pages
+ize);
    my $prev_page = $reqpage - 1;
    my $next_page = $reqpage + 1;
 
    if ($reqpage == 1)
    {
        $prev_link = "";
    }
    else
    {
        $prev_link = " <a href=\"http://path/to/script.cgi?reqpage=$re
+qpage&page=$prev_page\">". "previous" . "</a>";
    }
    if ($reqpage == $pagecount)
    {
        $next_link = "";
    }
    else
    {
        $next_link = " <a href=\"http://path/to/script.cgi?reqpage=$re
+qpage&page=$next_page\">". "Next" . "</a>";
    } 

    if ($pagecount > 1)
    {
        $pagelinks = $prev_link;
        $pageno = 0;
        while ($pageno < $pagecount)
        {
            $pageno++;
            if ($pageno == $reqpage)
            {
                $thislink = " <strong>$pageno</strong> ";
            }
            else
            {
                $thislink = " <a href=\"http://path/to/script.cgi?reqp
+age=$reqpage&page=$pageno\">" . $pageno . "</a>";
            }
            $pagelinks = $pagelinks . $thislink;
        }
        $pagelinks = $pagelinks . "   " . $next_link;
    }
    else
    {
        $pagelinks = "";
    }

print "<br />";    
print $count . "<br /><br />";
print $pagelinks . "<br />"; 
print "Database Results: " . $num_rows . "<br />"; 
print "Page " . $firstresult . "  Of&nbsp;&nbsp;" . $pageno;
print qq~
<br />
<br />
</body>
</html>~;

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In reply to perl pagination links by ironside

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