[HACK] Prevent duplicate URLs to same product

[Eck!]

Ive just added this to my site to redirect incorrect (but working) URLs to the correct one via a 301. Google had indexed the incorrect ones for some reason. For example, both of the following URLs worked, the first was indexed by google instead of the second (the correct one):

/94-led-by-the-grey.html
/fantasy/94-led-by-the-grey-YPD00160.html

This works in PS 1.2.4 but I havent tested any other versions, nor have I tested it with non-SEO URLs, but it works great for me.

In product.php (root folder) round about line 120 just after where it says "/* rewrited_url set */"

       $defaultcategory = Category::getLinkRewrite($product->id_category_default, intval($cookie->id_lang));
       $plink = $link->getProductLink($product->id, $product->link_rewrite, $defaultcategory, $product->ean13);
       $request = 'http://'.$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI'];

       if(strcmp($plink, $request) !== 0) {
           header("HTTP/1.1 301 Moved Permanently");
           header("Location: $plink");
       }

[henrycr]

Friends this works well for PrestaShop version 1.1.0.5 or serious differently

henry

[mel-]

thank you so much for this ! works like a charm.

[aga63]

Thank you very much for your contribution. Can you fix all the duplicate url problems? ie the category duplicate url's aswel?

Have you told the admin team about your contribution? as it would benefit us all in the new version which shall be released

[ngruy]

Hello,
This hack works ok with PS 1.3.1.1 and seo url on??

Thanks!

[Timpet]

How will this effect the google sitemap?

[uddhava]

If you want to be sure about all SEO and URL rewriting done correctly you should definitely try Tomerg's suggestions and URL redirect Module.
http://www.presto-changeo.com/content/6-prestashopseotips

[CataNic]

Thank you for this trick. It solve my online shop problem. However, I think this can be done by default by the Prestashop developers.