RWACha-API/application/api/validate/Exchange.php

<?php

namespace app\api\validate;

use think\Validate;

class Exchange extends Validate
{
    /**
     * 验证规则
     */
    protected $rule = [
 
      'product_id'    => 'require',
      'stock'         => 'require|number|gt:0'
    ];
    
    /**
     * 提示消息
     */
    protected $message = [

      'product_id.require'  => '产品ID有误', 
      'stock'                 => '数量有误'

    ];
    
    /**
     * 验证场景
     */
    protected $scene = [
        'order'      => ['product_id', 'stock'],
     
    ];
  
}