Question

我有以下问题，我有四个型号： MainArea | Institute | institute_level |学生如下：

class MainArea extends Model
{
public function institute(){
 return $this->belongsTo('\App\Institute');     
}
public function places(){

    return $this->hasMany('\App\Place');
}
} 
class Institute extends Model
{
public function insLevel(){
    return $this->hasMany('\App\InstituteLevel');
}
}
class InstituteLevel extends Model
{
public function students(){
    return $this->hasMany('\App\Student','applying_level');
}
}
class Student extends Model
{
public function instituteLevel(){
    return $this->belongsTo('\App\InstituteLevel','institute_level_id');
}
public function place(){
    return $this->belongsTo('\App\Place');
}
}

现在，我希望在同一个机构中获得所有在其中注册的学生数量的区域？它应该是这样的。

        $areas=\App\MainArea::withCount('institute.insLevel.students')->where('institute_id',$id)->get();

有什么建议吗？

Answer 1

不幸的是，“withCount（）”不支持Laravel 5.2中的嵌套关系。

Here's the comment from the contributor in a Github Pull Request.

Laravel5.2有计数

1 个答案: