Canonical URLS in Drupal
By default, Drupal will insert a <link rel="canonical"> tag in the head of each page on your site. The problem is Drupal inserts a relative URL rather than a more helpful absolute path. The other issue, is if you have a mobile version of the site, you need to account for that too.
Solution:
Remove default Drupal canonical tag. Add this code to template.php:
<?php
/*
* Canonical Link fix
* Canonical link generation in html.tpl.php
/*
function [YOURTHEME]_html_head_alter(&$head_elements) {
foreach (preg_grep('/^drupal_add_html_head_link:canonical:</', array_keys($head_elements)) as $key) {
unset($head_elements[$key]);
}
?>Add this below the <title> tag in html.tpl.php:
<?php if( variable_get( 'site_frontpage' ) == current_path() ) : ?>
<link rel="canonical" href="http://www.visitgreaterpalmsprings.com/" />
<link rel="alternate" href="http://m.visitgreaterpalmsprings.com/" media="only screen and (max-width: 640px)" />
<?php else : ?>
<link rel="canonical" href="http://www.visitgreaterpalmsprings.com<?= url(current_path()); ?>" />
<link rel="alternate" href="http://m.visitgreaterpalmsprings.com<?= url(current_path()); ?>" media="only screen and (max-width: 640px)" />
<?php endif; ?>