php - Eloquent - 在 selectRaw() 中插入变量

Question

如何在 $TotalDistance 中插入变量( selectRaw() )使用 Eloquent ？

public function totalPace()
{

    $TotalDistance = $this->hasMany(Runners_List::class, 'run_list_id')->sum('distance'); //60 karon
    $TotalPace = $this->hasMany(Runners_List::class, 'run_list_id')->selectRaw('SEC_TO_TIME( SUM( 
            TIME_TO_SEC( `pace` ) ) / '$TotalDistance') as total')->first();
 
     return $TotalPace;
    }

如果我替换 $TotalDistance 就可以了用一个数字。

Answer 1

尝试这个:

public function totalPace()
{

    $TotalDistance = $this->hasMany(Runners_List::class, 'run_list_id')->sum('distance'); //60 karon
    $TotalPace = $this->hasMany(Runners_List::class, 'run_list_id')->selectRaw('SEC_TO_TIME( SUM( 
        TIME_TO_SEC( `pace` ) ) / ?) as total', [$TotalDistance])->first();

        return $TotalPace;
}