Laravel 5框架学习之向视图传送数据_php实例
我们在Routes.php中新建一个路由
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
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:
php artisan
可以看到laravel提供的功能。
php artisan make:controller PagesController
ok,在 app->http->controller 下面生成了 PagesController.php
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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:
php artisan make:controller PagesController --plain
再看一下生成的结果
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
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。
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:
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
About
That's it. 运行浏览器查看吧,😄
向视图传送数据
修改PagesController.php
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
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:
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:
$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:
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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