txx2023/app/api/model/GoodSpec.php

<?php
declare (strict_types = 1);

namespace app\api\model;

use think\Model;

/**
 * @mixin \think\Model
 */
class GoodSpec extends Model
{
    public function spec(){
		return $this->belongsTo(Specs::class,'spec_id')->bind(['spec_name']);
	}
	
	public function SpecInfo(){
		return $this->belongsTo(SpecValue::class,'spec_value_id')->bind(['spec_value_name'=>'spec_value']);
	}
}