Indexing WooCommerce product variation SKUs for the main product in Relevanssi

Indexing WooCommerce product variation SKUs for the main product in Relevanssi on child sites.

Snippet Type

Execute on Child Sites

Snippet

add_filter( 'relevanssi_content_to_index', 'rlv_index_variation_skus', 10, 2 );
function rlv_index_variation_skus( $content, $post ) {
	if ( 'product' === $post->post_type ) {
		$args       = array(
            'post_parent'    => $post->ID,
			'post_type'      => 'product_variation',
			'posts_per_page' => -1
        );
		$variations = get_posts( $args );
		if ( ! empty( $variations ) ) {
			foreach ( $variations as $variation ) {
				$sku      = get_post_meta( $variation->ID, '_sku', true );
				$content .= " $sku";
			}
		}
	}
	return $content;
}
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