Customizing Smarty Themes
Last modified: October 26, 2009 - 20:37
Create a file in your theme directory named: smartytemplate.php.
<?php
function _smarty_variables($hook, $vars = array()) {
switch ($hook) {
case 'page':
if ((arg(0) == 'admin')) {
$vars['template_file'] = 'admin';
}
break;
}
return $vars;
}
?>References:
Custom page layout based on URL Alias
I wanted to have more control over the different sections of my site -- different banners, colors, menu blocks, etc -- based on the URL alias. For instance, I have cms,foo.com/house pages where I keep a fairly high-traffic photo diary of my ongoing house renovation, cms.foo.com/dogs where my dogs each have their own web sites, cms.foo.com/resume where I keep my professional resume, etc.
My first attempt was a hack of smarty.engine, which I didn't like doing for future upgrade reasons. I decided to move it all to a function in smartytemplate.php. Here's the code:
function _smarty_variables($hook, $vars = array())
{
if ($hook == 'page') {
if (arg(0) == 'comment') {
if (isset($vars['content'])) {
$count = preg_match('/<form action="\/\?q=comment\/(\w*)\/(\d*)"/',
$vars['content'],
$matches);
if ($count > 0 && isset($matches[1]) && isset($matches[2])) {
$mode = $matches[1];
$id = $matches[2];
// Just in case of SQL injection
if (!is_numeric($id)) {
return $vars;
}
$sql = null;
$path = null;
if ($mode == 'reply') {
// $id = parent page node id (nid)
$sql = "SELECT dst FROM url_alias WHERE src='node/$id'";
}
else if ($mode == 'edit' || $mode == 'delete') {
// $id = comment id (cid)
$sql = "SELECT dst FROM url_alias WHERE src='node/' ||
(SELECT nid FROM comments WHERE cid=$id)";
}
if ($sql !== null) {
$path = db_result(db_query($sql));
}
}
}
}
else if (arg(0) == 'node' && isset($vars['node']->path)) {
$path = $vars['node']->path;
}
if ($path) {
$vars['path'] = $path;
$vars['path_elements'] = split('/', $vars['path']);
$vars['template_file'] = 'page-' . $vars['path_elements'][0];
}
}
return $vars;
}
The SQL is for PostgreSQL but should be relatively easy to port to MySQL, if anyone wants to give it a shot.
What it does:
Based on the first node of the URL alias, an alternate page.tpl is served instead of the default page.tpl. That alternative template is named page-NODE.tpl where NODE is the first node of the URL. For example cms.foo.com/dogs would use page-dogs.tpl.
The code also remaps page.tpl for reply postings, previews, edits and deletes. If you forget to create that page-WHATEVER.tpl file, no problem. Drupal will fall back on the default page.tpl.
One more trick: it stuffs an array in the Smarty namespace, path_elements. This contains each mode of the URL alias path so you can fine tune your template at the second and even third levels. For instance, cms.foo.com/motorcycles/harley would use the page-motorcycles.tpl as would cms.foo.com/motorcycles/triumph. But within that page-motorcycles.tpl template you could display photos of a Harley or a Triumph, respectively, based on $path_elements[1], which would contain either 'harley' or 'triumph'.