Laravel 5 Eloquent在和/或在子句中

Question

我试图从表中获得多个where和/或子句的结果.

我的SQL语句是:

SELECT * FROM tbl
WHERE m__Id = 46
AND
t_Id = 2
AND
(Cab = 2 OR Cab = 4)

我怎么能用Laravel Eloquent来解决这个问题？

我在Laravel的代码是:

$BType = CabRes::where('m_Id', '=', '46')
                        ->where('t_Id', '=', '2')
                        ->where('Cab', '2')
                        ->orWhere('Cab', '=', '4')
                        ->get();

Answer 1

使用先进的wheres:

CabRes::where('m__Id', 46)
      ->where('t_Id', 2)
      ->where(function($q) {
          $q->where('Cab', 2)
            ->orWhere('Cab', 4);
      })
      ->get();

或者,甚至更好,使用whereIn():

CabRes::where('m__Id', 46)
      ->where('t_Id', 2)
      ->whereIn('Cab', $cabIds)
      ->get();

Answer 2

另外,如果你有变量,

CabRes::where('m_Id', 46)
      ->where('t_Id', 2)
      ->where(function($q) use ($variable){
          $q->where('Cab', 2)
            ->orWhere('Cab', $variable);
      })
      ->get();

Answer 3

当我们使用多个and(where) 条件和 last (where + 或 where) 时，where 条件大部分时间都失败了。为此，我们可以使用带有参数传入的嵌套 where 函数。

$feedsql = DB::table('feeds as t1')
                   ->leftjoin('groups as t2', 't1.groups_id', '=', 't2.id')
                    ->where('t2.status', 1)
                    ->whereRaw("t1.published_on <= NOW()") 
                    >whereIn('t1.groupid', $group_ids)
                   ->where(function($q)use ($userid) {
                            $q->where('t2.contact_users_id', $userid)
                            ->orWhere('t1.users_id', $userid);
                     })
                  ->orderBy('t1.published_on', 'desc')->get();

上面的查询验证所有 where 条件然后最后检查 where t2.status=1 and (where t2.contact_users_id='$userid' or where t1.users_id='$userid')