ThinkPHP 3.2.3 实例一：从零开始打造留言板

2018-03-11 本文已影响52人 27efec53a72d

项目需求

1.用户注册、登陆
2.发表留言
3.删除本人留言
4.查看本人留言

项目环境参数

ThinkPHP3.2.3
PhpStorm

项目结构

message_board.png

Mysql数据库建表

注意 sql语句中 `` 与 '' 的区别
创建用户表

DROP TABLE
IF EXISTS `jiat_user`;

CREATE TABLE `jiat_user` (
    `user_id` INT (10) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT '用户ID',
    `username` VARCHAR (40) NOT NULL,
    `password` CHAR (32) NOT NULL,
    `create_at` INT (10) NOT NULL,
    PRIMARY KEY (`user_id`),
    KEY `createAt` (`create_at`) USING BTREE,
    KEY `username` (`username`) USING BTREE
) ENGINE = MyISAM AUTO_INCREMENT = 1 DEFAULT CHARSET = utf8;

创建留言表

DROP TABLE
IF EXISTS `jiat_message`;

CREATE TABLE `jiat_message` (
    `message_id` INT (10) UNSIGNED NOT NULL AUTO_INCREMENT,
    `content` VARCHAR (100) NOT NULL,
    `create_at` INT (10) NOT NULL,
    `user_id` INT (10) UNSIGNED NOT NULL,
    PRIMARY KEY (`message_id`),
    KEY `createAt` (`create_at`) USING BTREE,
    KEY `userId` (`user_id`) USING BTREE
) ENGINE = MyISAM AUTO_INCREMENT = 1 DEFAULT CHARSET = utf8;

ThinkPHP中的数据库配置

路径：message_borad/Application/Home/Conf/config.php

<?php
return array(
    //'配置项'=>'配置值'
    'DB_TYPE' => 'mysql',
    'DB_HOST' => 'localhost',
    'DB_PORT' => 3306,
    'DB_USER' => 'root',
    'DB_PWD' => '',
    'DB_NAME' => 'message_board',
    'DB_PREFIX' => 'jiat_'
);

Model层

创建MessageViewModel.class.php
路径：message_borad/Application/Home/Model/MessageViewModel.class.php

<?php
/**
 * Created by PhpStorm.
 * User: tao1024
 * Date: 2018/3/9
 * Time: 23:25
 */

namespace Home\Model;


use Think\Model\ViewModel;

class MessageViewModel extends ViewModel {

    public $viewFields = array(
        'Message' => array('message_id', 'content', 'create_at'),
        'User' => array('user_id', 'username', '_on' => 'Message.user_id=User.user_id')
    );

}

Controller层

1.创建UserController.class.php
路径：message_borad/Application/Home/Controller/UserController.class.php

<?php
/**
 * Created by PhpStorm.
 * User: tao1024
 * Date: 2018/3/9
 * Time: 23:35
 * 用户控制器
 */

namespace Home\Controller;


use think\Controller;
use think\Error;
use Think\Model;

class UserController extends Controller {

    //注册
    function register() {
        $this->display();
    }

    //注册处理
    function do_register() {
        $username = I('username');
        $password = I('password');
        $password_repeat = I('password_repeat');

        if (empty($username)) {
            $this->error('用户名不能为空');
        }
        if (empty($password)) {
            $this->error('密码不能为空');
        }
        if ($password != $password_repeat) {
            $this->error('两次输入的密码不一致');
        }

        $userModel = new Model('User');
        $user = $userModel->where(array("username" => $username))->find();
        if (!empty($user)) {
            $this->error('用户名已存在');
        }
        $userInfo = array("username" => $username, "password" => md5($password), "create_at" => time());
        if (!($userModel->create($userInfo) && $userModel->add())) {
            $this->error('注册失败' . $userModel->getDbError);
        }
        $this->success('注册成功', U('login'));
    }


    //登陆
    function login() {
        $this->display();
    }


    //登陆处理
    function do_login() {
        $username = I('username');
        $password = I('password');

        if (empty($username)) {
            $this->error('用户名不能为空');
        }
        if (empty($password)) {
            $this->error('密码不能为空');
        }

        $userModel = new Model('User');
        $user = $userModel->where(array("username" => $username))->find();
        if (empty($user)) {
            $this->error('用户不存在');
        }
        if ($user["password"] != md5($password)) {
            $this->error('密码错误');
        }
        //写入session
        session('user.user_id', $user['user_id']);
        session('user.username', $user['username']);
        //跳转首页
        $this->redirect('Index/index');
    }


    //退出
    function logout() {
        if (!session('user.user_id')) {
            $this->error('请登录');
        }
        session_destroy();
        $this->success('退出成功', U('Index/index'));
    }

}

2.创建IndexController.class.php
路径：message_borad/Application/Home/Controller/IndexController.class.php

<?php
/**
 * Created by PhpStorm.
 * User: tao1024
 * Date: 2018/3/9
 * Time: 23:35
 * 留言控制器
 */

namespace Home\Controller;

use Home\Model\MessageViewModel;
use Think\Controller;
use Think\Model;
use Think\Page;

class IndexController extends Controller {

    /**
     * 留言列表
     */
    public function index() {
        $messageModel = new MessageViewModel();
        $count = $messageModel->count();
        $page = new Page($count, 10);
        $show = $page->show();
        $message_list = $messageModel->order("message_id desc")->limit($page->firstRow . "," . $page->listRows)->select();
        dump($message_list);
        die();
        $this->assign("page", $show);
        $this->assign("message_list", $message_list);
        $this->display();
    }

    /**
     * 发表留言
     */
    public function add() {
        //$this->check_login();
        $this->display();
    }

    /**
     * 处理发表留言
     */
    public function do_add() {
        $this->check_login();
        $content = I("content");
        if (empty($content)) {
            $this->error("留言内容不能为空");
        }
        if (mb_strlen(trim($content), "utf-8") > 100) {
            $this->error("留言内容不能超过100个字");
        }
        $messageModel = new Model("Message");
        $user_id = session("user.user_id");
        $data = array("content" => $content, "user_id" => $user_id, "create_at" => time());
        if (!($messageModel->create($data) && $messageModel->add())) {
            $this->error("发表留言失败");
        }
        $this->success("发表留言成功！", U("Index/index"));
    }

    /**
     * 删除留言
     */
    public function delete() {
        $message_id = I("message_id");
        if (empty($message_id)) {
            $this->error("缺少参数");
        }
        $this->check_login();
        $messageModel = new Model("Message");
        $result = $messageModel->where(array("message_id" => $message_id, "user_id" => session('user.user_id')))->delete();
        if (!$result) {
            $this->error("删除失败");
        }
        $this->success("删除成功！", U("Index/index"));
    }

    /**
     * 检测登陆
     */
    public function check_login() {
        if (!session("user.user_id")) {
            $this->error("请先登陆", U("User/login"));
        }
    }

}

View层

1.创建register.html
路径：message_borad/Application/Home/View/User/register.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>注册</title>
</head>
<body>
<h1>用户注册</h1>
<form method="post" action="/index/do_register">
    <table>
        <tr>
            <td><label for="username">账号</label></td>
            <td><input type="text" name="username" id="username" required/></td>
        </tr>
        <tr>
            <td><label for="password">密码</label></td>
            <td><input type="password" name="password" id="password" required/></td>
        </tr>
        <tr>
            <td><label for="password_repeat">再次输入密码</label></td>
            <td><input type="password" name="password_repeat" id="password_repeat" required/></td>
        </tr>
        <tr>
            <td colspan="2" align="center">
                <button>注册</button>
                <button type="reset">重置</button>
            </td>
        </tr>
    </table>
</form>
<p>
    <a href="/index/login">已有账号？点击登录</a>
</p>

</body>
</html>
<!--注意点：
/index：当前模块的url地址，不包含域名
：当前项目的url地址，不包含域名
-->

2.创建login.html
路径：message_borad/Application/Home/View/User/login.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>登陆</title>
</head>
<body>
<h1>用户登陆</h1>
<form method="post" action="/index/do_login">
    <table>
        <tr>
            <td><label for="username">账号</label></td>
            <td><input type="text" name="username" id="username" required/></td>
        </tr>
        <tr>
            <td><label for="password">密码</label></td>
            <td><input type="password" name="password" id="password" required/></td>
        </tr>
        <tr>
            <td colspan="2" align="center">
                <button>登陆</button>
                <button type="reset">重置</button>
            </td>
        </tr>
    </table>
</form>
<p>
    <a href="/index/register">没有有账号？点击注册</a>
</p>

</body>
</html>

3.创建add.html
路径：message_borad/Application/Home/View/Index/add.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>发表留言</title>
</head>
<body>
<form method="post" action="/index/do_add">
    <label for="content">留言内容</label><br/>
    <textarea type="text" name="content" id="content" maxlength="100" rows="4" required></textarea><br/>
    <button>发表</button>
    <button type="reset">重置</button>
</form>
<p><a href="/index/index">首页</a></p>
</body>
</html>

4.创建index.html
路径：message_borad/Application/Home/View/Index/index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>留言板</title>
</head>
<body>
<h1>留言板</h1>
<div>
    <empty name="Think.session.user.username">
        <a href="{:U('User/login')}">登陆</a>
        <a href="{:U('User/register')}">注册</a>
        <else/>
        <p>{$Think.session.user.username},欢迎您！<a href="{:U('Index/add')}">发表留言</a> <a href="{:U('User/logout')}">退出登录</a></p>
    </empty>
    <volist name="message_list" id="item">
        <div>
            {$item.content}<br/>
            留言者：{$item.user_id}
            留言时间：{$item.create_at|date='Y-m-d H:i:s',###}
            <eq name="Think.session.user.user_id" value="$item.user_id">
                <a href="{:U('delete?message_id='.$item['message_id'])}" onclick="return confirm('确定删除此条留言？')">删除</a>
            </eq>
        </div>
    </volist>
</div>

</body>
</html>
<!--注意点：
{:U('')}的用法
{$item.content}与value="$item.content"的区别-->