<?php

namespace app\api\model\app\exchange;

use think\Model;
use think\Db;
use app\api\model\app\agent\Level;
class UseLog extends Model
{


    // 表名
    protected $name = 'app_exchange_use_log';


    // 自动写入时间戳字段
    protected $autoWriteTimestamp = 'integer';

    // 定义时间戳字段名
    protected $createTime = 'createtime';
    protected $updateTime = false;
    protected $deleteTime = false;

    // 追加属性
    protected $append = [
    ];


    /**
     * 获取兑换次数
     * @param $userId 用户
     * @param $batchId 批次
     * @return mixed
     */
    public static function getExchangeCount($userId,$batchId){
        return self::where([
            'user_id'=>$userId,
            'batch_id'=>$batchId
        ])->group('code')->count();
    }

    public function batch()
    {
        return $this->belongsTo('Batch', 'batch_id', 'id', [], 'LEFT')->setEagerlyType(0);
    }


    public function course()
    {
        return $this->belongsTo('app\api\model\course\Course', 'goods_id', 'id', [], 'LEFT')->setEagerlyType(0);
    }


}