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[PHP] - Laravel - 列表、新增、修改、删除例子

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09/23
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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