Pre Get Post CPT Partner

functions.php

<?php
function lp_partner_sort( $query ) {

    if( ! is_admin() && $query->is_main_query() && $query->is_post_type_archive('partner') ){

        if ( isset( $_COOKIE['region'] ) && $_COOKIE['region'] !== '0' ) {
            // Get the value of the "region" cookie
            $region = $_COOKIE['region'];

            // Set the query parameters to filter partners by the corresponding taxonomy term
            $tax_query = array(
                array(
                    'taxonomy' => 'region', // Replace 'partner_region' with your actual taxonomy name
                    'field'    => 'term_id',
                    'terms'    => $region,
                ),
            );
            $query->set( 'tax_query', $tax_query );
        }
        // Set the order and orderby parameters to sort by the custom field "tarif" in descending order, and then by date in descending order
        $query->set( 'orderby', array( 'meta_value_num' => 'DESC', 'modified' => 'DESC' ) );
        $query->set( 'meta_key', 'tarif' );

    }
}
add_action( 'pre_get_posts', 'lp_partner_sort' );