在Laravel中,在会话中传递不同类型的Flash消息的最佳方式

一种解决方案是将两个变量闪存到会话中:

消息本身

警报的"级别"

例如:

Session::flash('message', 'This is a message!'); 
Session::flash('alert-class', 'alert-danger'); 

然后在你看来:

@if(Session::has('message'))
<p class="alert {{ Session::get('alert-class', 'alert-info') }}">{{ Session::get('message') }}</p>
@endif

注意我已将默认值放入Session::get().这样你只需要覆盖它,如果警告应该是alert-info类以外的东西.

(这是一个快速的例子,未经测试:))

您可以制作多条消息并使用不同类型.请按照以下步骤操作:

创建一个文件:" app/Components/FlashMessages.php"

namespace App\Components;

trait FlashMessages
{
  protected static function message($level = 'info', $message = null)
  {
      if (session()->has('messages')) {
          $messages = session()->pull('messages');
      }

      $messages[] = $message = ['level' => $level, 'message' => $message];

      session()->flash('messages', $messages);

      return $message;
  }

  protected static function messages()
  {
      return self::hasMessages() ? session()->pull('messages') : [];
  }

  protected static function hasMessages()
  {
      return session()->has('messages');
  }

  protected static function success($message)
  {
      return self::message('success', $message);
  }

  protected static function info($message)
  {
      return self::message('info', $message);
  }

  protected static function warning($message)
  {
      return self::message('warning', $message);
  }

  protected static function danger($message)
  {
      return self::message('danger', $message);
  }
}

在您的基本控制器" app/Http/Controllers/Controller.php"上.

namespace App\Http\Controllers;

use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Routing\Controller as BaseController;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use Illuminate\Foundation\Auth\Access\AuthorizesResources;

use App\Components\FlashMessages;

class Controller extends BaseController
{
    use AuthorizesRequests, AuthorizesResources, DispatchesJobs, ValidatesRequests;

    use FlashMessages;
}

这将使FlashMessages所有扩展此类的控制器都可以使用该特征.

为我们的消息创建刀片模板:" views/partials/messages.blade.php"

@if (count($messages))
<div class="row">
  <div class="col-md-12">
  @foreach ($messages as $message)
      <div class="alert alert-{{ $message['level'] }}">{!! $message['message'] !!}</div>
  @endforeach
  </div>
</div>
@endif

关于" boot()"的方法app/Providers/AppServiceProvider.php:

namespace App\Providers;

use Illuminate\Support\ServiceProvider; 

use App\Components\FlashMessages;

class AppServiceProvider extends ServiceProvider
{
  use FlashMessages;

    public function boot()
    {
        view()->composer('partials.messages', function ($view) {

          $messages = self::messages();

          return $view->with('messages', $messages);
      });
    }

    ...
}

这将使$messages变量views/partials/message.blade.php在被调用时可用于" "模板.

在您的模板上,添加我们的消息模板 - " views/partials/messages.blade.php"

<div class="row">
  <p>Page title goes here</p>
</div>

@include ('partials.messages')

<div class="row">
  <div class="col-md-12">
      Page content goes here
  </div>
</div>

您只需要在您要在页面上显示消息的位置包含消息模板.

在您的控制器上,您只需执行此操作即可推送Flash消息:

use App\Components\FlashMessages;

class ProductsController {

  use FlashMessages;

  public function store(Request $request)
  {
      self::message('info', 'Just a plain message.');
      self::message('success', 'Item has been added.');
      self::message('warning', 'Service is currently under maintenance.');
      self::message('danger', 'An unknown error occured.');

      //or

      self::info('Just a plain message.');
      self::success('Item has been added.');
      self::warning('Service is currently under maintenance.');
      self::danger('An unknown error occured.');
  }

  ...

希望它能帮到你.

在你看来:

<div class="flash-message">
  @foreach (['danger', 'warning', 'success', 'info'] as $msg)
    @if(Session::has('alert-' . $msg))
    <p class="alert alert-{{ $msg }}">{{ Session::get('alert-' . $msg) }}</p>
    @endif
  @endforeach
</div>

然后在控制器中设置flash消息:

Session::flash('alert-danger', 'danger');
Session::flash('alert-warning', 'warning');
Session::flash('alert-success', 'success');
Session::flash('alert-info', 'info');

只需返回您想要处理的"标志",而无需使用任何其他用户功能.控制者:

return \Redirect::back()->withSuccess( 'Message you want show in View' );

请注意,我使用了"Success"标志.

风景:

@if( Session::has( 'success' ))
     {{ Session::get( 'success' ) }}
@elseif( Session::has( 'warning' ))
     {{ Session::get( 'warning' ) }} <!-- here to 'withWarning()' -->
@endif

是的,它确实有效!

我的方法是始终Redirect :: back()或Redirect :: to():

Redirect::back()->with('message', 'error|There was an error...');

Redirect::back()->with('message', 'message|Record updated.');

Redirect::to('/')->with('message', 'success|Record updated.');

我有一个帮助函数,使它适合我,通常这是在一个单独的服务:

function displayAlert()
{
      if (Session::has('message'))
      {
         list($type, $message) = explode('|', Session::get('message'));

         $type = $type == 'error' : 'danger';
         $type = $type == 'message' : 'info';

         return sprintf('<div class="alert alert-%s">%s</div>', $type, message);
      }

      return '';
}

在我的观点或布局中,我只是这样做

{{ displayAlert() }}

另一个解决方案是创建一个帮助器类 如何在这里创建帮助器类

class Helper{
     public static function format_message($message,$type)
    {
         return '<p class="alert alert-'.$type.'">'.$message.'</p>'
    }
}

然后你就可以做到这一点.

Redirect::to('users/login')->with('message', Helper::format_message('A bla blah occured','error'));

要么

Redirect::to('users/login')->with('message', Helper::format_message('Thanks for registering!','info'));

并在你看来

@if(Session::has('message'))
    {{Session::get('message')}}
@endif