<?php
namespace Cas\Dao;

use KIF\Dao\DBAgileDev;
use KIF\Core\Request;
use KIF\Cache\Memcached;


/**
 * 
 * 活动[投票]
 *   
 * @author lihuanchun@qq.com
 *
 */
class LotteryEventsVote extends DBAgileDev {
	protected $tableName = 'lottery_events_vote';
	
	
	/**
	 * 数据库里的真实字段
	 * @var array
	 */
	protected $other_field = array(
		'events_id',
		'title',
		'img_url',
		'num',
		'add_num'	
	);
	
	/**
	 * 获取当前活动的投票数据
	 */
	public function getThisEventData($events_id){
		$condition = array(
			'events_id' => $events_id
		);
		$ids = $this->findIdsBy($condition);
		
		if(!$ids){
			return null;
		}
		return $this->gets($ids);
	}
	
	/**
	 * 投票数增加
	 */
	public function upNum($id,$num=1){
		$data = $this->get($id);
		$info = array(
				'num' => $data['num'] + $num
		);
		return $this->modify($info,array('id' => $id));
	}
	
	/**
	 * 投票数递减
	 * @param unknown $id
	 * @param number $num
	 * @return Ambigous <\KIF\Data\ResultWrapper, \KIF\Data\ResultWrapper>
	 */
	public function decrNum($id, $num = 1) {
		$data = $this->get($id);
		$info = array(
			'num' => $data['num'] - $num
		);
		return $this->modify($info,array('id' => $id));
	}
}