[PHP] - Laravel - 列表、新增、修改、删除例子

前言

Laravel默认是自带了CURD的功能，使用路由的Route::resource可以做到。

但真正的项目中，这往往不是我们所需要的。因为一个项目会有比较复杂的计算、验证等功能。

下面是对项目中的列表、新增、修改、删除写了一个简单的view层的模型例子

---

 

 

一、路由配置

在app\Http\routes.php加入如下：

Route::group(["prefix" => "my2"], function() {

   Route::controller("/", "my\MyTest2Controller");

});

 

二、控制器基类

在app\Http\Controllers目录下新建一php类文件：BaseController.php

<?php

namespace App\Http\Controllers;



use App\Http\Controllers\Controller;



class BaseController extends Controller

{

    public function __construct() {

        $this->beforeFilter(function() {

            $this->before();

        });

    }

    

    protected function before() {

    }

}



?>

 

三、视图模型

视图模型基类

在app\models目录下新增php类文件：BaseModel.php （Laravel 5好像默认没有这个目录，需要自已新建）

<?php

namespace App\models;



use Validator;



/**

 * Model基类

 * @author Robin

 *

 */

abstract class BaseModel

{

    /**

     * 验证类

     * @var Validator

     */

    private $_validator;

    

    /**

     * 错误验证信息

     * @var Array

     */

    protected $messages = [

        "integer" => "应为整型值",

        "required" => "必填字段",

        "confirmed" => "密码两次输入不一致",

        "email" => "邮件地址格式不正确",

        "date" => "日期格式不正确",

        "between" => "值区间为:min 到 :max",

        "min" => "最小值为:min",

        "max" => "最大值为:max",

        "in" => "值应为:values",

        "size" => "大小为:size",

    ];

 

    /**

     * 加载函数

     * @param Input $input

     * @param Rule $rule

     */

    protected function init($input, $rule = array())

    {

        $this->_validator = Validator::make($input, $rule, $this->messages);

 

        $formKey = array_keys(get_class_vars(get_class($this)));

        // 遍历表单键值 并赋予类成员

        foreach ($formKey as $value)

        {

            if(isset($input[$value]))

            {

                $this->$value = $input[$value];

            }

        }

    }

 

    /**

     * 取得验证器

     */

    public function validator()

    {

        return $$this->_validator;

    }

 

    /**

     * 判断是否验证成功

     * @return boolean

     */

    public function isValid()

    {

        return !$this->_validator->fails();

    }

    

    /**

     * 取得验证错误信息

     */

    public function messages() {

        return $this->_validator->messages();

    }

 

}



?>

 

视图模型类

在app\models目录下新建my2目录，在my2目录下新建php类：MyUser.php

<?php

namespace App\models\my2;



use App\models\BaseModel;



class MyUser extends BaseModel

{

    public $id;

    public $name;

    public $email;

    public $age;

    public $birthday;

    public $password;

    public $password_confirmation;

    public $homepage;

    

    public function __construct() {

        

    }

    

    public function convert($input) {

        //-----------------------------------------------------

        // 字段验证

        //-----------------------------------------------------

        $rule = array(

            "name" => "required|min:4|max:10",

            "email" => "required|email",

            "age" => "required|integer|between:1,100",

            "birthday" => "required|date",

            "password" => "required|between:6,12|confirmed",

            "password_confirmation" => "required",

            "homepage" => "required|regex:/^http:\/\/.+/",

        );

        

        //-----------------------------------------------------

        // 加入自定义验证错误信息

        //-----------------------------------------------------

        $selfMessages = [

            "homepage.regex" => "主页地址不正确",

            "name.min" => "最小:min个字符",

            "name.max" => "最多:max个字符",

        ];

        $this->messages = array_merge($this->messages, $selfMessages);

        

        //-----------------------------------------------------

        // 调用父类方法

        //-----------------------------------------------------

        $this->init($input, $rule);

    }

}



?>

由于Laravel是没有直接对用户提交的数据映射成model的功能，所以写了一个模型基类做这个事。当然，这个基类也包括了对模型的数据验证。

 

四、控制器

在app\Http\Controllers目录下新建目录my2，在my2目录下新建php类文件：MyTest2Controller.php

<?php

namespace App\Http\Controllers\my;



use App\models\my2\MyUser;

use App\Http\Controllers\BaseController;

use Redirect;

use Route;

use View;

use Input;

use Request;

use URL;

use Session;

use Response;



class MyTest2Controller extends BaseController

{

    /**

     * 设置路径

     */

    private $path;



    function __construct()

    {

        $this->path = [

            "add" => URL::action("my\MyTest2Controller@getAdd"),

            "edit" => URL::action("my\MyTest2Controller@getEdit"),

        ];

    }

    

    public function getIndex() {

        $data = array(

            ["id" => 1, "name" => "robin"],

            ["id" => 2, "name" => "zhang"]

        );

        // 取得当前路由名称，如在路由中没有指定名称，返回空

        //$route = Route::currentRouteName();

        // 取得当前请求地址

        //$route = Request::url();

        // 取得当前请求路径

        // $path = Request::path();

        // 取得指定方法的Action

        // $action = action('my\MyTest2Controller@getAdd');

        // 取得指定方法的URL

        // $url = URL::action('my\MyTest2Controller@getEdit');

        

        return View::make("my.MyList", ["data" => $data, "path" => $this->path]);

    }

    

    public function getEdit($id) {

        $myUser = new MyUser();

        $myUser->id = $id;

        return View::make("my.MyEdit", ["user" => $myUser, "path" => $this->path]);

    }

    

    public function postEdit($id) {

        return $this->save($id);

    }

    

    public function getAdd() {

        return View::make("my.MyEdit", ["user" => new MyUser(), "path" => $this->path]);

    }

    

    public function postAdd() {

        return $this->save(0);

    }

    

    private function save($id) {

        $myUser = new MyUser();

        $myUser->id = $id;

        // -----------------------------------------------

        // 将输入值转换为对象

        // -----------------------------------------------

        $myUser->convert(Input::All());

        

        // -----------------------------------------------

        // 验证输入

        // -----------------------------------------------

        if($myUser->isValid()) {

            if($myUser->id == 0) {

                // TODO:

                // 新增

            }

            else {

                // TODO:

                // 更新

            }

            // 成功后重定向

            //return redirect()->to("/my2");

            return redirect()->action("my\MyTest2Controller@getIndex");

        }

        else {

            // 输入验证错误，返回view

            return View::make("my.MyEdit", ["user" => $myUser, "messages" => $myUser->messages(), "path" => $this->path]);

        }

    }

}



?>

 

五、视图

在resources\views\目录下新建my目录，新建php文件：MyList.blade.php

<h1>List page:</h1>

<?php

    foreach ($data as $item) {

        echo($item["name"]);

    }

?>

<br/>

<a href="{{$path['add']}}">Add user</a>

<br/>

@foreach($data as $item)

    <p>ID={{$item["id"]}}, Name={{$item["name"]}}, <a href="{{$path['edit']}}/{{$item["id"]}}">edit</a></p>

@endforeach

同样，新建php文件：MyEdit.blade.php

<?php

?>

@if (isset($messages))

<p>输入错误：</p>

<ul>

    @foreach($messages->all() as $item)

        <li style="color: red;">{{$item}}</li>

    @endforeach

</ul>

<hr/>

@endif

<form name="myform" action="{{$user->id>0 ? $path['edit'].'/'.$user->id : $path['add']}}" method="post">

    User name:<input name="name" type="text" value="{{$user->name}}" />{!!isset($messages) ? $messages->first('name', '<span style="color:red;">:message</span>') : ""!!}<br/>

    Email:<input name="email" type="text" value="{{$user->email}}" />{!!isset($messages) ? $messages->first('email', '<span style="color:red;">:message</span>') : ""!!}<br/>

    Age:<input name="age" type="text" value="{{$user->age}}" />{!!isset($messages) ? $messages->first('age', '<span style="color:red;">:message</span>') : ""!!}<br/>

    Birthday:<input name="birthday" type="text" value="{{$user->birthday}}" />{!!isset($messages) ? $messages->first('birthday', '<span style="color:red;">:message</span>') : ""!!}<br/>

    Password:<input name="password" type="password" value="{{$user->password}}" />{!!isset($messages) ? $messages->first('password', '<span style="color:red;">:message</span>') : ""!!}<br/>

    Confirm Password:<input name="password_confirmation" type="password" value="{{$user->password_confirmation}}" />

        {!!isset($messages) ? $messages->first('password_confirmation', '<span style="color:red;">:message</span>') : ""!!}<br/>

    Home page:<input name="homepage" type="text" value="{{$user->homepage}}" />{!!isset($messages) ? $messages->first('homepage', '<span style="color:red;">:message</span>') : ""!!}<br/>

    <input type="submit" value="save" />

</form>

---

 

运行效果

列表页

 

新增页

 

保存验证页