Rahe

<?php
function custom_search_query( $query ) {
	if( is_admin() && $query->is_main_query() && $query->query['post_type'] === 'revendeurs' && isset($query->query_vars['s']) )
	{
		$custom_fields = array(
			// put all the meta fields you want to search for here
			"raison_sociale",
		);
		$searchterm = $query->query_vars['s'];