Ajouter l'URL canonique sur Prestashop

Ajoutez dans le header.tpl ce petit bout de code:

<!-- canonical -->
 {if $page_name == 'index' or $page_name == 'search'}
 <link rel="canonical" href="{$base_dir_ssl}{$lang_iso}" />
 {elseif $page_name == 'category' or $page_name == 'best-sales' or $page_name == 'cart' or $page_name == 'discount' or $page_name == 'manufacturer' or $page_name == 'new-products' or $page_name == 'prices-drop'}
 <link rel="canonical" href="{$base_dir_ssl}{$request_uri|substr:1|regex_replace:'/\/(.*)/':''|regex_replace:'/\?(.*)/':''}" />
 {else}
 <link rel="canonical" href="{$base_dir_ssl}{$request_uri|substr:1}" />
 {/if}
 <!-- /canonical -->