| Category: | CGI Programming |
| Author/Contact Info | jeffa |
| Description: | Have you ever wanted to write an HTML::Template script that
would display any database query without having to
change the template file? Well, this bit of code attempts
to do just that. Just supply a query and optional place
holders and the code will do the rest. Of course, changing
the layout of the table is a manual process, but the number
and names of the columns are dynamically supplied.
NULL characters and HTML encodings are taken care of (via HTML::Entities for the latter), but i have only tested this code with the MySQL relational database server. Comments and suggestions are always welcome. |
use strict;
use warnings;
use DBI;
use HTML::Entities;
use HTML::Template;
my $dbh = DBI->connect(
qw(DBI:vendor:database:host user pass),
{RaiseError=>1}
);
# change these two vars to suite your needs:
my @arg = (42);
my $sql = 'select foo,bar from baz where qux = ?';
my $sth = $dbh->prepare($sql);
$sth->execute(@arg);
my $stmt = $sth->{Statement};
my $field = $sth->{NAME};
my $row = $sth->fetchall_arrayref();
my $tmpl = HTML::Template->new(filehandle => \*DATA);
$tmpl->param(
query => $stmt,
fields => [
map {
{ field => ucfirst lc $_ }
} @$field
],
rows => [
map {{ cols => [
map {
{ data => defined $_ ? encode_entities $_ : ' ' }
} @$_
] }} @$row
],
);
print $tmpl->output;
$dbh->disconnect;
__DATA__
<html>
<head>
<title>Dynamic table template</title>
<style type="text/css">
<!--
table { border-style: outset; border-width: thin; width: 70% }
th { border-style: ridge; }
td { border-style: inset; }
-->
</style>
</head>
<body>
<table>
<thead>
<caption><tmpl_var query></caption>
<tr>
<tmpl_loop fields>
<th><tmpl_var field></th>
</tmpl_loop>
</tr>
</thead>
<tbody>
<tmpl_loop rows>
<tr>
<tmpl_loop cols>
<td><tmpl_var data></td>
</tmpl_loop>
</tr>
</tmpl_loop>
</tbody>
</table>
</body>
</html>
|
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