.net转php laraval框架学习系列（三）项目实战---Route&Controllers

本章来学习laravel的路由

一个简单的路由列子

Route::get(‘/‘, function()
{
    return ‘Hello World‘;
});

路由的写法和Node的风格很相似。上面的路由直接返回ContentResult 这样容易理解一些。

再看一个复杂的Route的

Route::filter(‘old‘, function()//这是一个filter
{
    if (Input::get(‘age‘) < 200)
    {
        return Redirect::to(‘home‘);
    }
});

Route::get(‘user/profile‘, 　　　　　　 array(

　　　　　　‘as‘ => ‘profile‘,//路由名字

　　　　　　‘before‘ => ‘auth|old‘,//多个filter　　　　　  ‘uses‘ => ‘[email protected]‘));//controller 和action

更多理由信息 http://v4.golaravel.com/docs/4.1/routing

接下来是Controller,Laravel框架里的controller在App/controllers文件夹下面。

所有的Controller都是继承basecontroller。

laravel的控制器和asp.net mvc也有很多类似的地方

比方说 Controller Filters.上面的路由已经用到了。

还是看代码，完整的route.php代码

<?php

/* 模型绑定 */
Route::model(‘post‘, ‘Post‘);
Route::model(‘comment‘, ‘Comment‘);

/* 匿名用户可以访问的路由 */
Route::get(‘/post/{post}/show‘, [‘as‘ => ‘post.show‘, ‘uses‘ => ‘[email protected]‘]);
Route::post(‘/post/{post}/comment‘, [‘as‘ => ‘comment.new‘, ‘uses‘ => ‘[email protected]‘]);

/* 管理群组路由需要认证 */
Route::group([‘prefix‘ => ‘admin‘, ‘before‘ => ‘auth‘], function () {
    /*get routes
    Route::get(‘/‘, [‘use‘=>‘[email protected]‘]);
    */

    Route::get(‘/‘, function () {
        $layout = View::make(‘shared.layout‘);
        $layout->title = ‘DashBoard‘;
        $username = Auth::user()->username;
        $layout->main = View::make(‘post.index‘);
        return $layout;
    });

    Route::get(‘/post/list‘, [‘as‘ => ‘post.list‘, ‘uses‘ => ‘[email protected]‘]);
    Route::get(‘/post/new‘, [‘as‘ => ‘post.new‘, ‘uses‘ => ‘[email protected]‘]);

    /* 模型绑定 */
    Route::get(‘/post/{post}/edit‘, [‘as‘ => ‘post.edit‘, ‘uses‘ => ‘[email protected]‘]);
    Route::get(‘/post/{post}/delete‘, [‘as‘ => ‘post.delete‘, ‘uses‘ => ‘[email protected]‘]);

    Route::get(‘/comment/list‘, [‘as‘ => ‘comment.list‘, ‘uses‘ => ‘[email protected]‘]);

    /* 模型绑定 */
    Route::get(‘/comment/{comment}/show‘, [‘as‘ => ‘comment.show‘, ‘uses‘ => ‘[email protected]‘]);
    Route::get(‘/comment/{comment}/delete‘, [‘as‘ => ‘comment.delete‘, ‘uses‘ => ‘[email protected]‘]);

    /*post routes*/
    Route::post(‘/post/save‘, [‘as‘ => ‘post.save‘, ‘uses‘ => ‘[email protected]‘]);
    Route::post(‘/post/{post}/update‘, [‘as‘ => ‘post.update‘, ‘uses‘ => ‘[email protected]‘]);
    Route::post(‘/comment/{comment}/update‘, [‘as‘ => ‘comment.update‘, ‘uses‘ => ‘[email protected]‘]);

});

/* RESTful Controllers 理由处理一系列的路由有点类似于ASP.net MVC 的通配路由 */
Route::controller(‘/‘, ‘BlogController‘);

/* 视图合成器 */
View::composer(‘shared.sidebar‘, function ($view) {
    $view->recentPosts = Post::orderBy(‘id‘, ‘desc‘)->take(5)->get();
});

从 Route::controller的 BlogController 来分析：

<?php

class BlogController extends BaseController
{

    public function __construct()
    {
        //updated: prevents re-login.
         //$this->beforeFilter(‘guest‘, [‘only‘ => [‘getLogin‘]]);//这里游客的权限注释掉了，有和没有是一样的
        $this->beforeFilter(‘auth‘, [‘only‘ => [‘getLogout‘]]);//设置只有logout需要有认证的权限
    }

    public function getIndex()
    {
        $posts = Post::orderBy(‘id‘, ‘desc‘)->paginate(10);

        $this->layout->title = ‘Home Page | Laravel 4 Blog‘;　　　　　//这里初学者可能有点难理解，这里和laravel的view 相关　　　　　//这里layout模板在basecontroller中指定了布局页，布局页中有一个main的子视图，这里是把blog文件夹下home的模版合并index模板并传入参数$posts　　　　　//至于compact方法可以查看php相关文档。
        $this->layout->main = View::make(‘blog.home‘)->nest(‘content‘, ‘blog.index‘, compact(‘posts‘));
    }

    public function getLogin()
    {
        $this->layout->title = ‘login‘;
        $this->layout->main = View::make(‘blog.login‘);
    }

    public function postLogin()
    {
        $credentials = [
            ‘username‘ => Input::get(‘username‘),
            ‘password‘ => Input::get(‘password‘)
        ];
        $rules = [
            ‘username‘ => ‘required‘,
            ‘password‘ => ‘required‘
        ];
        $validator = Validator::make($credentials, $rules);
        if ($validator->passes()) {
            if (Auth::attempt($credentials))
                return Redirect::to(‘admin/‘);
            return Redirect::back()->withInput()->with(‘failure‘, ‘username or password is invalid!‘);
        } else {
            return Redirect::back()->withErrors($validator)->withInput();
        }
    }

    public function getLogout()
    {
        Auth::logout();
        return Redirect::to(‘/‘);
    }

}

这一章如果详细写的话需要写的内容太多了，代码不一一贴出来了，在下一章 我把完整代码贴出来