laravel 解决多库下的DB::transaction()事务失效问题

DB::transaction(function () use ($uid, $roleId) {
 RoomUserRole::insert([
  'uid' => $uid,
  'role_id' => $roleId,
  'created_at' => LARAVEL_START,
  'updated_at' => LARAVEL_START
 ]);

 RoomUserRoleLog::insert([
  'uid' => $uid,
  'handle_type' => 1,
  'admin_uid' => Auth::user()->id,
  'created_at' => LARAVEL_START,
  'updated_at' => LARAVEL_START
 ]);

});

DB::connection('mysql2')->transaction(function () use ($uid, $roleId) {
 RoomUserRole::insert([
  'uid' => $uid,
  'role_id' => $roleId,
  'created_at' => LARAVEL_START,
  'updated_at' => LARAVEL_START
 ]);

 RoomUserRoleLog::insert([
  'uid' => $uid,
  'handle_type' => 1,
  'admin_uid' => Auth::user()->id,
  'created_at' => LARAVEL_START,
  'updated_at' => LARAVEL_START
 ]);

}); // 这样你会发现事务才正常回滚

DB::connection('mysql_chat_room')->beginTransaction();
DB::connection('mysql_chat_room')->mit();
DB::connection('mysql_chat_room')->rollBack(); // 指定库，不然都会跑默认配置库的事务