laravel-5 - 如何在 laravel5.0 eloqeunt 关系中使用 max id？

Question

我使用下面的函数从调度表中选择最后一个 id， 但它没有 cocrrected

'loan'=>function($s) {
      $s->with(['schedule'=>function($schedule){
      $schedule->select(DB::raw('loan_id, schedule_date, principal as schedule_principal','max(id) as id'));
   }]);
}]);

Answer 1

更改select为：

DB::raw('loan_id, schedule_date, principal as schedule_principal, max(id) as id')