How to set 2 different URLs for the same product?

[Igor Silvito]

Hi there,

The product has different categories. And it is displayed on each category page.

For example, product-1 has category-1, category-2, category-3. But the default category is "category-1". So the link to this product will be https://site.com/category-1/product-1.

But I need to set a link to the product depends on the category page from where this product is opened.

So if I open category-2 page the link to this product needs to be https://site.com/category-2/product-1.

If I open category-3 page the link to this product needs to be https://site.com/category-3/product-1.

And I need to have all these links to be working. How can I do it?

Because when I open a link https://site.com/category-2/product-1 it redirects me to the default link - https://site.com/category-1/product-1.

Thanks.

[Daresh]

A basic assumption from a SEO point of view is that there should not be duplicate content, that's why it should be hard to achieve something like this, only by some custom module overriding default code. By default prestashop uses product's default category to build a link.

[Igor Silvito]

Yes, I tried to set another default category for building a link - it works. But when I use this new link it redirects me to the default product link (using default product category). Where do I need to update this functionality?

Regarding duplicate content - I use category name in the product title, description and breadcrumbs - that's why they will be different.

[Daresh]

Traffic & SEO -> Redirect to the canonical URL

[Igor Silvito]

Here my settings on Traffic & SEO page for product link - {category:/}{rewrite}.html

And here the category is used as default. And the link to the product will be like this - https://site.com/category-1/product-1.

When I open this link https://site.com/category-2/product-1 the site redirects me to https://site.com/category-1/product-1. But I need to have this link https://site.com/category-2/product-1 also working. I understand that I need to do some changes to the source code. But I can't find where exactly.

[Daresh]

Traffic & SEO -> Redirect to the canonical URL (setting)

[Igor Silvito]

And what do I need to set there?

[Igor Silvito]

Hi there!

I've solved the this task. Probably it may be helpful for someone.

Add these lines in the file /override/classes/Category.php before return.

public function getProducts

...

// Set id_category_link to the current category if ... <condition>
// id_category_link is used to prepare URL
if (in_array($this->id, $array_condition)) {
    foreach ($result as &$product) {
        $product['id_category_link'] = (int)$this->id;
    }
}

return Product::getProductsProperties($idLang, $result);

Add the following functions in the file /override/classes/Product.php

/**
 * Get product default category name for a given product ID or
 * get product category name for a given product ID and category ID
 *
 * @param int $id_product
 * @param int $id_category_default
 * @param int $id_category_link
 *
 * @return string Category Name
 */
public static function getCategoryForProduct($id_product, $id_category_default = 0, $id_category_link = 0)
{
    if (empty($id_product)) return false;

    $id_lang = Context::getContext()->language->id;

    // Check if the product has category ID
    if (!empty($id_category_link) && ($id_category_default != $id_category_link) && Product::checkProductCategoryByID($id_product, $id_category_link)) {
        return Product::getCategoryForProductByID($id_product, $id_category_link);
    } else {
        $sql = 'SELECT cl.name as cat_name FROM `' . _DB_PREFIX_ . 'product` p
                LEFT JOIN ' . _DB_PREFIX_ . 'category_lang cl ON (cl.id_category = p.id_category_default AND cl.id_lang = ' . (int)$id_lang . ')
                ' . Shop::addSqlAssociation('product', 'p') . '
                WHERE p.id_product = ' . (int)$id_product;
        return Db::getInstance(_PS_USE_SQL_SLAVE_)->getValue($sql);
    }
}

/**
 * Get product URL based on category ID and product ID
 *
 * @param string $url
 * @param int $id_product
 * @param int $id_category_default
 * @param int $id_category_link
 *
 * @return string Product URL
 */
public static function getProductURLByCategory($url, $id_product, $id_category_default, $id_category_link)
{
    if (empty($id_category_link) || empty($id_product)) return $url;
    if ($id_category_default == $id_category_link) return $url; // Link is correct - based on default category

    // Check if the product has this category and create a new product URL
    if (Product::checkProductCategoryByID($id_product, $id_category_link)) {
        $link = new Link();
        $id_lang = Context::getContext()->language->id;
        $category_link_rewrite = Category::getLinkRewrite($id_category_link, $id_lang);
        $url = $link->getProductLink($id_product, null, $category_link_rewrite, null, $id_lang);
    }
    
    return $url;
}

And then I did small updates in the tpl files and breadcrumbs. But the major changes in the functionality is described above.

Thanks.