如何在laravel5.0 eloqeunt關係中使用max id？

Question

心中已經使用下面的函數從正點表中選擇最後一個ID，但它不是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到：

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