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How to implement backend login interface in thinkphp5

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May 15, 2020 am 09:15 AM

thinkphp5

How to implement backend login interface in thinkphp5

1. Unzip the "tp5" compressed package to "thinkphp_5.0.24_with_extend\"(E);

2. Put the unzipped "tp5 folder"— >Rename "demo (you can give other names)"->Copy the demo folder to the WWW directory;

3. Enter "http://127.0.0.1/demo/public" in the browser "—> Check whether tp5 can be used;

4. Create or import a database (I imported it);

5. In the application folder—> Create the admin folder —>In the admin folder—>Create controller,

model, and view folders respectively—>In the controller folder—>Create Login.php;

D: \phpStudy\WWW\demo\application\admin\controller\Login.php

Content

<?php
namespace app\admin\controller;
use think\Controller;
use app\admin\model\Login as Log;
class Login extends Controller
{
    public function index()
    {
        // $linkres= \think\Db::name(&#39;link&#39;)->paginate(3);
        // $this->assign(&#39;linkres&#39;,$linkres);
        if(request()->isPost()){
            $login=new Log;
            $status=$login->login(input(&#39;username&#39;),input(&#39;password&#39;));
            if($status==1){
                return $this->success(&#39;登录成功，正在跳转！&#39;,&#39;Index/index&#39;);
            }elseif($status==2){
                return $this->error(&#39;账号或者密码错误!&#39;);
            }else{
                return $this->error(&#39;用户不存在!&#39;);
            }
        }
        return $this->fetch(&#39;login&#39;);
    }
 
    public function logout(){
        session(null);
        return $this->success(&#39;退出成功！&#39;,url(&#39;index&#39;));
    }
 
 
}

6. In the model folder—>Create the Login.php file

D:\phpStudy\WWW\demo\application\admin\model\Login.php

Content:

<?php
namespace app\admin\model;
use think\Model;
class Login extends Model
{
    public function login($username,$password){
        $admin= \think\Db::name(&#39;admin&#39;)->where(&#39;username&#39;,&#39;=&#39;,$username)->find();
        if($admin){
            if($admin[&#39;password&#39;]==md5($password)){
                \think\Session::set(&#39;id&#39;,$admin[&#39;id&#39;]);
                \think\Session::set(&#39;username&#39;,$admin[&#39;username&#39;]);
                return 1;
            }else{
                return 2;
            }
 
        }else{
            return 3;
        }
    }
}

7. In the view folder—>Create the Login folder—> ;In the Login folder—>Create the login.html file

D:\phpStudy\WWW\demo\application\admin\view\Login\login.html

Content:

<!doctype html>
<html>
<head>
    <meta charset="UTF-8">
    <title>后台登录</title>
    <link href="__PUBLIC__/static/admin/css/admin_login.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div class="admin_login_wrap">
    <h1 id="后台管理">后台管理</h1>
    <div class="adming_login_border">
        <div class="admin_input">
            <form action="" method="post">
                <ul class="admin_items">
                    <li>
                        <label for="user">用户名：</label>
                        <input type="text" name="username" value="admin" id="user" size="35" class="admin_input_style" />
                    </li>
                    <li>
                        <label for="pwd">密码：</label>
                        <input type="password" name="password" value="admin" id="pwd" size="35" class="admin_input_style" />
                    </li>
                    <li>
                        <input type="submit" tabindex="3" value="提交" class="btn btn-primary" />
                    </li>
                </ul>
            </form>
        </div>
    </div>
</div>
</body>
</html>

8.D:\phpStudy\WWW\demo\application\config.php

// 应用调试模式
 &#39;app_debug&#39;              => false,

Modify it to:

&#39;app_debug&#39;              => true,

and you will see the bug!

The template file does not exist: D:\phpStudy\WWW\demo\public/../application/admin\view\login\login.html

The login file name under view is wrong! ! ! *Use uppercase Login in Login.php under controller and model, and lowercase Login in login.html under view!

SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: NO) The bug appears because there is no connection to the database

D:\phpStudy\WWW\ demo\application\database.php

Fill in the content

return [
    // 数据库类型
    &#39;type&#39;            => &#39;mysql&#39;,
    // 服务器地址
    &#39;hostname&#39;        => &#39;127.0.0.1&#39;,
    // 数据库名
    &#39;database&#39;        => &#39;youme&#39;, //你创建或导入的数据库名
    // 用户名
    &#39;username&#39;        => &#39;root&#39;,
    // 密码
    &#39;password&#39;        => &#39;****&#39;,
    // 端口
    &#39;hostport&#39;        => &#39;&#39;,
    // 连接dsn
    &#39;dsn&#39;             => &#39;&#39;,
    // 数据库连接参数
    &#39;params&#39;          => [],
    // 数据库编码默认采用utf8
    &#39;charset&#39;         => &#39;utf8&#39;,
    // 数据库表前缀
    &#39;prefix&#39;          => &#39;ym_&#39;,  // 你创建或导入数据库表名的前缀
 
 
*****************************************************************************************
  SQLSTATE[42S02]: Base table or view not found: 1146 Table &#39;youhe.admin&#39; doesn&#39;t exist（Bug）

D:\phpStudy\WWW\demo\application\admin\model\Login.php

<?php
namespace app\admin\model;
use think\Model;
class Login extends Model
{
    public function login($username,$password){
//        $admin= \think\Db::name(&#39;admin&#39;)->where(&#39;username&#39;,&#39;=&#39;,$username)->find();
        $user= \think\Db::name(&#39;user&#39;)->where(&#39;username&#39;,&#39;=&#39;,$username)->find();
//        if($admin){
        if($user){
//            if($admin[&#39;password&#39;]==md5($password)){
            if($user[&#39;password&#39;]==$password){
//                \think\Session::set(&#39;id&#39;,$admin[&#39;id&#39;]);
                \think\Session::set(&#39;id&#39;,$user[&#39;id&#39;]);
//                \think\Session::set(&#39;username&#39;,$admin[&#39;username&#39;]);
                \think\Session::set(&#39;username&#39;,$user[&#39;username&#39;]);
                return 1;
            }else{
                return 2;
            }
        }else{
            return 3;
        }
    }
}