pre_get_posts and Layered Nav Filter widget compatibility issue

  • This is link to dev website: https://beta.projectswatches.com/?filter_color=aqua
    it has Layered Nav filters enabled for custom attributes, and it has custom code in functions.php of active theme:

    add_action( 'pre_get_posts', 'custom_pre_get_posts_query' );

function custom_pre_get_posts_query( $q ) {

	if ( ! $q->is_main_query() ) return;
	if ( ! $q->is_post_type_archive() ) return;
	if ( ! is_admin() && is_shop()) {

		$q->set( 'tax_query', array(array(
			'taxonomy' => 'product_cat',
			'field' => 'slug',
			'terms' => array( 'watch-archives-category', 'gift-cards' ), // Don't display products in the archive category on the shop page
			'operator' => 'NOT IN'
		)));

	}
	remove_action( 'pre_get_posts', 'custom_pre_get_posts_query' );

}

    I got this code from this page: https://docs.woocommerce.com/document/exclude-a-category-from-the-shop-page/

    The theme itself doesn’t have any other modifications. All plugins are deactivated exept for woocommerce. All components – wordpress, woocommerce, theme – all latest version.
    The problem is: the Layered Nav attribute filter doesn’t work along with pre_get_post snippet. You may choose attributes from filter, but page will still showing all products.
    The question is: how to make it work properly? Is this a woocommerce bug?

Viewing 3 replies - 1 through 3 (of 3 total)
  • Moritz Kern

    (@mobotter)

    On my site I have exactly the same problem. Without pre_get_posts everything works normal. I hope we will find a solution soon.

    I also have this problem. I’m using a pre_get_posts tax_query to exclude a category with the NOT IN operator, but this breaks the wc layered nav filters.

    Thread Starter romapad

    (@romapad)

    I had solve this problem by editing woocommerce files directly. Not best, but working.
    Go to \includes\class-wc-query.php and search for 

    		if ( ! is_array( $tax_query ) ) {
			$tax_query = array( 'relation' => 'AND' );
		}

    – it is around line #549 and replace it with code:

            if ( ! is_array( $tax_query ) AND ! is_tax('product_cat') ) {
            $tax_query = array( 'relation' => 'AND', array(
                'taxonomy' => 'product_cat',
                'field' => 'slug',
                'terms' => array( 'SLUG_OF_CATEGORY', 'COMMA_SEPARETAD' ),
                'operator' => 'NOT IN'
            ) );
		}

    change categories slugs to required.
    You have to edit this file manually after every woocommerce update.

    • This reply was modified 7 years, 10 months ago by romapad.
Viewing 3 replies - 1 through 3 (of 3 total)
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