Woocommerce 404 ошибка категории товаров

Creating a perfect url structure can be pretty difficult with WooCommerce, specially if you try to set the same shop base and category base slug. This situation makes permalink structure conflict as WordPress is confused and doesn’t know which layout to generate: single-product or product-category page.

If you try to set up WooCommerce permalinks to get something like:

• example.com/shop-name/ => Shop page listing products
• example.com/shop-name/category-name/ => Category page listing products from a category (generates 404 error without this plugin)
• example.com/shop-name/category-name/product-name/ => Product page showing product details

How to fix Woocommerce 404 error on category pages

Here are the permalink settings that we use to generate the ultimate url structure:

• Shop base: my-shop
• Product category base: my-shop (same as shop base)
• Product permalink base: Shop base with category, e.g. my-shop/%product_cat%

Links generated:

www.site.com/my-shop/
=> Shop page listing products

www.site.com/my-shop/my-cat-1/
=> Category page listing products from a category (top-level category – 404 error)

www.site.com/my-shop/my-cat-1/sub-cat1/
=> 2nd level Category page(sub-category – 404 error)

www.site.com/my-shop/my-cat-1/sub-cat1/sub-sub-cat/
=> 3th level Category page(sub-sub-category – 404 error)

www.site.com/my-shop/my-cat-1/sub-cat1/sub-sub-cat/my-prod-3/
=> Single product from 3th level Category

Solution

So, we have to find a way to help WordPress distinguish categories from products.

Problem starts here www.site.com/my-shop/my-cat-1/ as obviously WordPress doesn’t know if “my-cat-1” is a product or category.

WP_Rewrite is WordPress’ class for managing the rewrite rules that allow you to use Pretty Permalinks feature. All rewrite rules are saved in database and all we have to do is to create a new rules for our site structure. We will not use general Regex syntax, but we will add a separate rewrite rule for every of our product categories.

This way we will tell WordPress how to resolve every single Product Category and this way we will avoid URL conflicts.

We made a plugin to work for you the way described. All you have to do is to upload and activate plugin. It will check if base and category structure are the same and will generate rewrite rule for all your Product Categories.

You can see on Status Page what’s done:

Simple as that!

add_filter( 'request', 'change_requerst_vars_for_product_cat' );
add_filter( 'term_link', 'term_link_filter', 10, 3 );
add_filter( 'post_type_link', 'wpp_remove_slug', 10, 3 );
add_action( 'pre_get_posts', 'wpp_change_request' );

function change_requerst_vars_for_product_cat($vars) {

    global $wpdb;
    if ( ! empty( $vars[ 'pagename' ] ) || ! empty( $vars[ 'category_name' ] ) || ! empty( $vars[ 'name' ] ) || ! empty( $vars[ 'attachment' ] ) ) {
      $slug   = ! empty( $vars[ 'pagename' ] ) ? $vars[ 'pagename' ] : ( ! empty( $vars[ 'name' ] ) ? $vars[ 'name' ] : ( ! empty( $vars[ 'category_name' ] ) ? $vars[ 'category_name' ] : $vars[ 'attachment' ] ) );
      $exists = $wpdb->get_var( $wpdb->prepare( "SELECT t.term_id FROM $wpdb->terms t LEFT JOIN $wpdb->term_taxonomy tt ON tt.term_id = t.term_id WHERE tt.taxonomy = 'product_cat' AND t.slug = %s", array( $slug ) ) );
      if ( $exists ) {
        $old_vars = $vars;
        $vars     = array( 'product_cat' => $slug );
        if ( ! empty( $old_vars[ 'paged' ] ) || ! empty( $old_vars[ 'page' ] ) ) {
          $vars[ 'paged' ] = ! empty( $old_vars[ 'paged' ] ) ? $old_vars[ 'paged' ] : $old_vars[ 'page' ];
        }
        if ( ! empty( $old_vars[ 'orderby' ] ) ) {
          $vars[ 'orderby' ] = $old_vars[ 'orderby' ];
        }
        if ( ! empty( $old_vars[ 'order' ] ) ) {
          $vars[ 'order' ] = $old_vars[ 'order' ];
        }
      }
    }

    return $vars;

  }

function term_link_filter( $url, $term, $taxonomy ) {

    $url = str_replace( "/product-category/", "/shop/", $url );
    return $url;

  }

function wpp_remove_slug( $post_link, $post, $name ) {

    if ( 'product' != $post->post_type || 'publish' != $post->post_status ) {
      return $post_link;
    }
    $post_link = str_replace( '/' . $post->post_type . '/', '/', $post_link );

    return $post_link;

  }

function wpp_change_request( $query ) {

    if ( ! $query->is_main_query() || 2 != count( $query->query ) || ! isset( $query->query[ 'page' ] ) ) {
      return;
    }
    if ( ! empty( $query->query[ 'name' ] ) ) {
      $query->set( 'post_type', array( 'post', 'product', 'page' ) );
    }

}

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