Laravel select 如果 id 存在於另一個表中並且列具有該表上的特定值，則所有行

Question

我有 4 張桌子：

通知（id、title、desc、is_published）

notices_to_districts (id, notice_id, district_id)

notices_to_employees (id, notice_id, user_id)

notices_to_establishments（id，notice_id，information_id）

我想獲得所有獨特的通知，如果，

notices_to_districts 有一個特定的 district_id，或者

notices_to_employees 有一個特定的 user_id，或者

notices_to_establishments 有一個特定的establishment_id

我在嘗試 -

$notices = Notice::join('notices_to_districts', 'notices_to_districts.notice_id', '=', 'notices.id')
            ->join('notices_to_establishments', 'notices_to_establishments.notice_id', '=', 'notices.id')
            ->join('notices_to_employees', 'notices_to_employees.notice_id', '=', 'notices.id')
            ->where('district_id', '=', $user_district_id)
            ->orWhere('establishment_id', '=', $user_establishment_id)
            ->orWhere('user_id', '=', $user_id)
            ->where('is_published', '=', 1)->get();

Answer 1

您應該使用閉包參數分組，否則您的“orWhere”將無法按您的意願工作。

$notices = Notice::join('notices_to_districts', 'notices_to_districts.notice_id', '=', 'notices.id')
            ->join('notices_to_establishments', 'notices_to_establishments.notice_id', '=', 'notices.id')
            ->join('notices_to_employees', 'notices_to_employees.notice_id', '=', 'notices.id')
            ->where('district_id', '=', $user_district_id)
            ->where('is_published', '=', 1)            
            ->where(
                function ($query) use ($user_establishment_id, $user_id) {
                        $query->orWhere('establishment_id', '=', $user_establishment_id)
                            ->orWhere('user_id', '=', $user_id);
                }
            )
            ->get();

像這個例子一樣， SQL 將在您的子句周圍有正確的括號。

Answer 2

     I solved it - 


$notice_ids_of_district = Notices_to_district::select('notice_id')->where('district_id', '=', $user_district_id)->get();
            $notice_ids_of_establishment = Notices_to_establishment::select('notice_id')->where('establishment_id', '=', $user_establishment_id)->get();
            $notice_ids_of_employee = Notices_to_employee::select('notice_id')->where('user_id', '=', $user_id)->get();

            $notices = Notice::whereIn('id', $notice_ids_of_district)
            ->orWhereIn('id', $notice_ids_of_establishment)
            ->orWhereIn('id', $notice_ids_of_employee)
            ->get();