我有一个自定义字段，用于存储为数字的视图计数。我添加了一个视图列，并使其可排序，但排序不正确。

单击“视图”列时的结果如下：

Views
=====
1900
10992
10004
280
18
4015
...

/**
 * Add view counts to admin columns
 */
add_filter( \'manage_posts_columns\', \'eri_posts_column_views\' );
function eri_posts_column_views( $columns ) {
    $columns[\'post_views\'] = \'Views\';
    return $columns;
}
add_action( \'manage_posts_custom_column\', \'eri_posts_custom_column_views\' );
function eri_posts_custom_column_views( $column ) {
    if ( $column === \'post_views\') {
        $post_id = get_the_ID();
        $meta_key = \'eri_post_view_count\';
        $count = 0;
        if (get_post_meta( $post_id, $meta_key, true ) && get_post_meta( $post_id, $meta_key, true ) != \'\') {
            $count = get_post_meta( $post_id, $meta_key, true );
        }
        echo $count;
    }
}


/**
 * Make admin columns sortable
 */
add_filter(\'manage_edit-post_sortable_columns\', \'eri_view_count_sortable_column\');
function eri_view_count_sortable_column($columns){
    $columns[\'post_views\'] = \'post_views\';
    return $columns;
}
add_action( \'pre_get_posts\', \'eri_view_count_custom_orderby\' );
function eri_view_count_custom_orderby( $query ) {
    if( ! is_admin() )
        return;

    $orderby = $query->get( \'orderby\');

    if( \'post_views\' == $orderby ) {
      $query->set(\'meta_key\',\'eri_post_view_count\');
      $query->set(\'orderby\',\'meta_value_num\');
    }
}