laravel查询生成器：我有mysql查询

我想将以下MySQL查询转换为Laravel5.8查询生成器。我怎么能这样做

SELECT 
    u.id, 
    u.username,
    (select count(*)  as invalid_count from invalid_template_messaging where user_id = u.id) as t1,
     (select count(*)  as valid_count from template_messagings where user_id = u.id) as t2 FROM  
    users as u GROUP BY 
    u.id

您可以这样编写这个查询

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当您试图自己编写查询生成器语句时，您遇到了什么问题？您可以使用laravel雄辩的关系，就像我是laravel的新手一样

DB::select(`u.id`,`u.username`)
        ->selectSub(`select count as invalid_count from invalid_template_messaging where user_id = u.id`, `t1`)
        ->selectSub(`select count as valid_count from template_messagings where user_id = u.id`, `t2`)
        ->from(`users as u`)
        ->groupBy(`u.id`)
        ->get();