hainan/app/Models/ProductSpec.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class ProductSpec extends Model
{
    use HasFactory;

	protected $fillable = ['name', 'stock', 'original_price', 'price'];

	public function __construct(array $attributes = [])
	{
		parent::__construct($attributes);
		$this->timestamps = false;
	}

	public function product()
	{
		return $this->belongsTo(Product::class);
	}
}