ThinkPHP5+jQuery+MySql实现投票功能

效果图：

前端代码：

<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>基于THINKPHP5实现红蓝投票功能</title>

<style type="text/css">
    .vote{width:288px; height:300px; margin:40px auto;position:relative}
    .votetitle{width:100%;height:62px; background:url(/static/index/images/icon.png) no-repeat 0 30px; font-size:15px}
    .red{position:absolute; left:0; top:64px; height:80px;}
    .blue{position:absolute; right:0; top:64px; height:80px;}
    .red p,.blue p{line-height:22px}
    .redhand{position:absolute; left:0;width:36px; height:36px; background:url(/static/index/images/icon.png) no-repeat -1px -38px;cursor:pointer}
    .bluehand{position:absolute; right:0;width:36px; height:36px; background:url(/static/index/images/icon.png) no-repeat -41px -38px;cursor:pointer}
    .grayhand{width:34px; height:34px; background:url(/static/index/images/icon.png) no-repeat -83px -38px;cursor:pointer}
    .redbar{position:absolute; left:42px; margin-top:8px;}
    .bluebar{position:absolute; right:42px; margin-top:8px; }
    .redbar span{display:block; height:6px; background:red; width:100%;border-radius:4px;}
    .bluebar span{display:block; height:6px; background:#09f; width:100%;border-radius:4px; position:absolute; right:0}
    .redbar p{line-height:20px; color:red;}
    .bluebar p{line-height:20px; color:#09f; text-align:right; margin-top:6px}
</style>
<script type="text/javascript" src="/static/index/js/jquery.js"></script>

<script type="text/javascript">

$(function(){

    // 获取初始数据
    getdata('',1);
    
    $(".redhand").click(function(){
        getdata("red",1);
    });
    $(".bluehand").click(function(){
        getdata("blue",1);
    });
});

function getdata(type,vid){
    $.ajax({
      url: "{:url('/index/vote/vote')}",
      data: {type:type,vid:vid},
      type:'POST',
      dataType: 'json',
      success: function (res) {
          console.log(res)
          if (res.status == 0) {

              alert('投票成功')
              var w = 208;
            $("#red_num").html(res.msg.rednum);
            $("#red").css("width",res.msg.red_percent*100+"%");
            var red_bar_w = w*res.msg.red_percent-10;
            $("#red_bar").css("width",red_bar_w);
            $("#blue_num").html(res.msg.bluenum);
            $("#blue").css("width",res.msg.blue_percent*100+"%");
            var blue_bar_w = w*res.msg.blue_percent;
            $("#blue_bar").css("width",blue_bar_w);
          }else{
              alert('投票失败');
          }
      }
    });
}
</script>
</head>

<body>

<div id="main">
   <h2 class="top_title"><a href="http://www.jb51.net/article/71504.htm">ThinkPHP5+jQuery+MySql实现红蓝投票功能</a></h2>
   <div class="vote">
        <div class="votetitle">您对Thinkphp5的看法？</div>
        <div class="red" id="red">
            <p>非常实用</p>
            <div class="redhand"></div>
            <div class="redbar" id="red_bar">
                <span></span>
                <p id="red_num"></p>
            </div>
        </div>
        <div class="blue" id="blue">
            <p style="text-align:right">完全不懂</p>
            <div class="bluehand"></div>
            <div class="bluebar" id="blue_bar">
                <span></span>
                <p id="blue_num"></p>
            </div>
        </div>
   </div>
</div>

</body>
</html>

控制器：

<?php
namespace app\index\controller;
use think\Controller;

/**
 * 投票
 */
class Vote extends Controller
{

    /**
     * 首页
     */
    public function index()
    {
        return $this->fetch();
    }


    /**
     * 投票
     * @param vid type ip
     */
    public function Vote()
    {
        $data = input('post.');
        if (!empty($data)) {

            $data['ip'] = get_ip();    //获取Ip

            // 先检测当前ip是否已经投过票
            $count = model('Vote')->checkIp($data);

            // 检测是否提交了type,提交了即代表点击了按钮,没提交即代表页面初次渲染
            if (!empty($data['type'])) {
                if ($count == '0') {    //当前还未投过票 

                    // 更新票数  添加用户ip表
                    $res = model('Vote')->postVote($data);

                    if ($res) {
                        
                        // 投票成功  获取当前各自的票数
                        $info = $this->getPercent($data);
                        return return_succ($info);
                    }else{
                        return return_error('投票失败');
                    }
                }else{
                    // 已经投过票
                    return return_error('您已经投过票了');
                }
            }else{
                // 初次渲染,获取初始数据
                $info = $this->getPercent($data);
                return return_succ($info);
            }
        }else{
            return return_error('数据不能为空');
        }

    }

    // 计算比例
    public function getPercent($data)
    {
        // 投票成功  获取当前各自的票数
        $info = model('Vote')->getInfo($data);
        // 计算比例 保留3位小数
        $info['red_percent'] = round($info['rednum'] / ($info['rednum'] + $info['bluenum']),3);
        $info['blue_percent'] = 1 - $info['red_percent'];
        return $info;
    }


}

模型：

<?php
namespace app\index\model;
use think\Model;
use think\Db;

class Vote extends Model
{
    // 检测当前ip是否已经投过票
    public function checkIp($data)
    {
        $res = Db::table('votes_ip')->where(['vid'=>$data['vid'],'ip'=>$data['ip']])->count();
        return $res;
    }

    // 投票
    public function postVote($data)
    {
        $info = $this->getInfo($data);
        if ($info) {

            Db::startTrans();
            try {
                
                if ($data['type'] == "red") {

                    // 更新票数表  
                    Db::table('votes')->where(['id'=>$data['vid']])->update(['rednum'=>$info['rednum']+1]);
                }elseif ($data['type'] == "blue") {

                    Db::table('votes')->where(['id'=>$data['vid']])->update(['bluenum'=>$info['bluenum']+1]);
                }
                // 添加用户投票ip
                Db::table('votes_ip')->insert(['vid'=>$data['vid'],'ip'=>$data['ip']]);

                Db::commit();
                return true;
            } catch (Exception $e) {
                Db::rollback();
                return false;
            }
        }
    }

    // 获取当前各自的票数
    public function getInfo($data)
    {
        // 获取各自的票数
        $info = Db::table('votes')->where(['id'=>$data['vid']])->find();
        return $info;
    }

}

posted @ 2020-01-16 14:26 下页、再停留阅读(668) 评论(0) 编辑收藏举报

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