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Home Backend Development PHP Tutorial Laravel 5框架学习之向视图传送数据_php实例

Laravel 5框架学习之向视图传送数据_php实例

Jun 07, 2016 pm 05:13 PM
php framework laravel

我们在Routes.php中新建一个路由

复制代码 代码如下:

Route::get('about', 'PagesController@about');

在浏览器中浏览会获得一个错误,错误信息仅仅是一个提示信息,缺少细节,在生产环境 It' ok,但是开发阶段我们希望获得详细信息。

在项目的根目录找到 .env 文件,修改

复制代码 代码如下:

APP_DEBUG=true

这将显示详细的错误信息,PagesController 不存在。但在生产环境一定要设置为 false

我们可以手工新建控制器,但更快的方式是利用 laravel 提供的生成器。在命令行当前项目目录中运行:

复制代码 代码如下:

php artisan

可以看到laravel提供的功能。

复制代码 代码如下:

php artisan make:controller PagesController

ok,在 app->http->controller 下面生成了 PagesController.php

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<&#63;php namespace App\Http\Controllers;

 

use App\Http\Requests;

use App\Http\Controllers\Controller;

 

use Illuminate\Http\Request;

 

class PagesController extends Controller {

 

 /**

 * Display a listing of the resource.

 *

 * @return Response

 */

 public function index()

 {

 //

 }

 

 /**

 * Show the form for creating a new resource.

 *

 * @return Response

 */

 public function create()

 {

 //

 }

 

 /**

 * Store a newly created resource in storage.

 *

 * @return Response

 */

 public function store()

 {

 //

 }

 

 /**

 * Display the specified resource.

 *

 * @param int $id

 * @return Response

 */

 public function show($id)

 {

 //

 }

 

 /**

 * Show the form for editing the specified resource.

 *

 * @param int $id

 * @return Response

 */

 public function edit($id)

 {

 //

 }

 

 /**

 * Update the specified resource in storage.

 *

 * @param int $id

 * @return Response

 */

 public function update($id)

 {

 //

 }

 

 /**

 * Remove the specified resource from storage.

 *

 * @param int $id

 * @return Response

 */

 public function destroy($id)

 {

 //

 }

 

}

Copy after login

这样生成的controller包含了全部所需要的RESTful方法,我们可以简化一下。删除生成的PagesController.php,在命令行运行:

复制代码 代码如下:

php artisan make:controller PagesController --plain

再看一下生成的结果

复制代码 代码如下:

use App\Http\Requests;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
class PagesController extends Controller {
 //
}

基本上是一个空的controller,所有的方法我们需要自己创建。

如果你想知道到底有什么参数我们可以在命令行执行,你可以运行下面的命令来查看帮助

复制代码 代码如下:

php artisan help make:controller

ok, 你可以经常使用help命令来帮助你了解这些参数。

在PagesController中建立about方法。

复制代码 代码如下:

 public function about() {
        return 'About Page';
    }

在浏览器冲查看结果,错误消失,返回简单的信息。

返回视图

我们当然希望返回html文档,修改about方法的返回:

复制代码 代码如下:

 public function about() {
        return view('pages.about');
    }

注意:返回的结果是 pages.about ,这表示在 views 子目录中的 pages 子目录中的 about.balde.php 文件。让我们创建 resources\views\pages\about.balde.php 文件

复制代码 代码如下:




   
    Document


About




That's it. 运行浏览器查看吧,😄

向视图传送数据

修改PagesController.php

复制代码 代码如下:

 public function about() {
        $name = 'Zhang Jinlgin';
        return view('pages.about')->with('name', $name);
    }

修改我们的视图文件 about.blade.php

复制代码 代码如下:

About


Bingo,查看结果吧。

我们使用的laravel使用了blade模板,我们可以利用这个好处修改视图:

复制代码 代码如下:

About {{ $name }}


看起来更好了,在blade中,{{}}是转义html的语义的,让我来修改一个数据:

复制代码 代码如下:

$name = 'Zhang Jinlgin';

查看结果,发现所有的html元素都被转义了。但是如果不需要转义html,可以使用 {!! !!},修改视图:

复制代码 代码如下:

About {!! $name !!}


再看结果,👌

以上所述就是本文的全部内容了,希望能够对大家熟练掌握Laravel5有所帮助。

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