对整数的成员函数addEagerConstraints（）的错误调用

Question

1. 这是正常代码
2. TractorTable类

3. [UserReviews类后续代码。

   public function getReviewAvgAndCount() {
       return $this->hasMany(UserReview::class, 'tractor_id');
   }
   
   function getAverageRatingAttribute() {
       return ($this->getReviewAvgAndCount()->count());
    }
   

UserReview：

public function tractorTable()
{ 
     return $this ->belongsTo('App\Model\TractorTable','tractor_id');
} 

呼叫控制器：

TractorTable::with('tractorImage','tractorSpecData','getAverageRatingAttribute','drive')->orderBy('tractor_id', 'desc')->take(5)->get();

Answer 1

急切加载（带有）只能用于关系：https://laravel.com/docs/6.x/eloquent-relationships#eager-loading

所以getAverageRatingAttribute无效。