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ThinkPHP5+jQuery+MySql method to implement voting function

藏色散人forward: 2020-01-21 17:45:043182browse

The following column ThinkPHP Tutorial will introduce to you how to implement the voting function in ThinkPHP5 jQuery MySql. I hope it will also be helpful to friends in need!

The first rendering is as follows:

ThinkPHP5+jQuery+MySql method to implement voting function

Then share the code as follows:

Front-end code:

<!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(&#39;&#39;,1);
    
    $(".redhand").click(function(){
        getdata("red",1);
    });
    $(".bluehand").click(function(){
        getdata("blue",1);
    });
});
function getdata(type,vid){
    $.ajax({
      url: "{:url(&#39;/index/vote/vote&#39;)}",
      data: {type:type,vid:vid},
      type:&#39;POST&#39;,
      dataType: &#39;json&#39;,
      success: function (res) {
          console.log(res)
          if (res.status == 0) {
              alert(&#39;投票成功&#39;)
              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(&#39;投票失败&#39;);
          }
      }
    });
}
</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>

Controller:

<?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()
    {
        $data = input(&#39;post.&#39;);
        if (!empty($data)) {
            $data[&#39;ip&#39;] = get_ip();    //获取Ip
            // 先检测当前ip是否已经投过票
            $count = model(&#39;Vote&#39;)->checkIp($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($data[&#39;type&#39;])) {
                if ($count == &#39;0&#39;) {    //当前还未投过票 
                    // 更新票数  添加用户ip表
                    $res = model(&#39;Vote&#39;)->postVote($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(&#39;投票失败&#39;);
                    }
                }else{
                    // 已经投过票
                    return return_error(&#39;您已经投过票了&#39;);
                }
            }else{
                // 初次渲染,获取初始数据
                $info = $this->getPercent($data);
                return return_succ($info);
            }
        }else{
            return return_error(&#39;数据不能为空&#39;);
        }
    }
    // 计算比例
    public function getPercent($data)
    {
        // 投票成功  获取当前各自的票数
        $info = model(&#39;Vote&#39;)->getInfo($data);
        // 计算比例 保留3位小数
        $info[&#39;red_percent&#39;] = round($info[&#39;rednum&#39;] / ($info[&#39;rednum&#39;] + $info[&#39;bluenum&#39;]),3);
        $info[&#39;blue_percent&#39;] = 1 - $info[&#39;red_percent&#39;];
        return $info;
    }
}

Model:

<?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)
    {
        $res = Db::table(&#39;votes_ip&#39;)->where([&#39;vid&#39;=>$data[&#39;vid&#39;],&#39;ip&#39;=>$data[&#39;ip&#39;]])->count();
        return $res;
    }
    // 投票
    public function postVote($data)
    {
        $info = $this->getInfo($data);
        if ($info) {
            Db::startTrans();
            try {
                
                if ($data[&#39;type&#39;] == "red") {
                    // 更新票数表  
                    Db::table(&#39;votes&#39;)->where([&#39;id&#39;=>$data[&#39;vid&#39;]])->update([&#39;rednum&#39;=>$info[&#39;rednum&#39;]+1]);
                }elseif ($data[&#39;type&#39;] == "blue") {
                    Db::table(&#39;votes&#39;)->where([&#39;id&#39;=>$data[&#39;vid&#39;]])->update([&#39;bluenum&#39;=>$info[&#39;bluenum&#39;]+1]);
                }
                // 添加用户投票ip
                Db::table(&#39;votes_ip&#39;)->insert([&#39;vid&#39;=>$data[&#39;vid&#39;],&#39;ip&#39;=>$data[&#39;ip&#39;]]);
                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
        $info = Db::table(&#39;votes&#39;)->where([&#39;id&#39;=>$data[&#39;vid&#39;]])->find();
        return $info;
    }
}

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