我有一篇帖子，其中为CPT归档页面设置了过滤器。这很好，但我在侧栏中有其他WP\\U查询对象不起作用，因为post\\U where过滤器也会影响这些对象。如何使过滤器只在主页上工作而不在侧边栏上工作？

add_filter(\'posts_where\', \'Where_Events\', 10, 1);
function Where_Events($where)
{
    global $wpdb;
    $current_date = new DateTime(\'now\');
    $current_month = $current_date->format(\'m\');
    $current_year = $current_date->format(\'Y\');

$query_month = get_query_var( \'eventMonth\', $current_month );
$query_year = get_query_var( \'eventYear\', $current_year );
$query_day = \'01\';
$query_date = $query_year .\'-\'. $query_month . \'-\' . $query_day;

// check date where function
//default return current month
if (! is_admin() && (is_post_type_archive(\'gnl_events\') && is_main_query())) {
    $where .= \' AND MONTH(events_occurence) = MONTH("\'.$query_date.\'")\';
    $where .= \' AND YEAR(events_occurence) = YEAR("\'.$query_date.\'")\';
}
return $where;