截至目前我有2个不同的ModelProductModel.php这是我的产品清单。ProductRelated.php这是每个特定产品分配的相关产品。场景是，如果我id = 1的ProductModel.id (primary key of Product Model)在我的ProductRelated.php我有这个prodID（这相当于id (primary key of Product Model) 这将用于识别相关产品被分配的特定产品 ID。prodRelatedID这是与该产品相关的产品。所以我ProductModel会有这些数据  id | prodTitle | prodDesc    | More fields here...   1 | Product 1 | Description | More FIeld value here ..   2 | Product 2 | Description | More FIeld value here ..   3 | Product 3 | Description | More FIeld value here ..在我的ProductRelated遗嘱中有这些数据  id | prodID | prodRelatedID | More fields here...   1 | 1      | 2             | More FIeld value here ..   2 | 1      |  3            | More FIeld value here ..这意味着，id = 1来自ProductModel有 2 个不同的prodRelatedID这些是2 and 3我这样做的想法是使用hasMany()这是我的ProductModelnamespace App\Models;use Illuminate\Database\Eloquent\Model;use App\User;class ProductModel extends Model{public $timestamps = true;protected $table = 'product';/** * The attributes that are mass assignable. * * @var array */protected $fillable = [    'id',    'prodTitle',    'prodDesc',    'prodCategory',    'attachment',    'prodSize',    'prodPrice',    'created_by',    'is_best_seller',        'prod_included',    'prod_instruction',];}我的ProductRelatednamespace App\Models;use Illuminate\Database\Eloquent\Model;use App\User;class ProductRelated extends Model{public $timestamps = true;protected $table = 'product_related';/** * The attributes that are mass assignable. * * @var array */protected $fillable = [    'id',    'prodID',    'prodRelatedID',    'created_by'];}