在我的自定义类中注入 Silex $app [英] Inject Silex $app in my custom class

问题描述

我在参与 Silex 项目，我使用类进行不同的处理:

I'm on a Silex project and I use classes to different treatments:

$connection = new Connection($app);
$app->match('/connection', function () use ($app, $connection) {
    $connexion->connectMember();
    return $app->redirect($app['url_generator']->generate('goHome'));
})->method('GET|POST')->bind('doConnection');

在我的类Connection"的函数connectMember()"中，我有:

In the function 'connectMember()' of my class 'Connection', I have :

   [...]
if($isMember){
   [...]
}else{
   return $this->_app['twig']->render(
      'message.twig', 
      array('msg' => "This member does not exist.", 'class' => 'Warning'));
}
   [...]

但是render()方法不起作用.我想显示的错误消息没有显示，而是启动了$ app->redirect (...)".

But the render () method is not working. The error message I want to display is not displayed and "$ app-> redirect (...)" is launched instead.

如何让我的班级使用当前对象 Silex\Application ?是否有更好的方法将自定义类绑定到 Silex 应用程序的实例?

How to make my class uses the current object Silex\Application ? Is there a better method to bind a custom class to the instance of the Silex application?

非常感谢您的回答！

版本:添加信息

如果我使用:

return $connexion->connectMember();

显示错误消息.但这不是一个好的解决方案.连接"类调用其他也使用此代码的类:

The error message is displayed. But it's not a good solution. The 'connection' class calls other classes that also use this code:

$this->_app['twig']->render(...). 

如何使 $this->_app(存在于我的类中)对应于我在控制器中创建的变量 $app?

How to make $ this->_app (present in my classes) correspond to the variable $app created in my controller?

推荐答案

为Connection(或Connexion??)类创建一个服务并注入应用程序:

Create a service for the Connection (or Connexion??) class and inject the application:

use Silex\Application;

class Connection
{
    private $_app;

    public function __construct(Application $app)
    {
        $this->_app = $app;
    }

    // ...
}

$app['connection'] = function () use ($app) {
    return new Connection($app); // inject the app on initialization
};

$app->match('/connection', function () use ($app) {
    // $app['connection'] executes the closure which creates a Connection instance (which is returned)
    return $app['connection']->connectMember();

    // seems useless now?
    return $app->redirect($app['url_generator']->generate('goHome'));
})->method('GET|POST')->bind('doConnection');

在 silex 和 pimple(pimple 是 silex 使用的容器).

Read more about it in the documentation of silex and pimple (pimple is the container used by silex).

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