在 Laravel 自定义中间件中设置 Cookie
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Setting Cookie in Laravel Custom Middleware
提问by Gaurav Mehta
I want to set a cookie in a custom Laravel middleware. The idea is to set the cookie value any time a user visits my website through any landing page.
我想在自定义 Laravel 中间件中设置一个 cookie。这个想法是在用户通过任何登录页面访问我的网站时设置 cookie 值。
So what I did was I created a middleware named UUIDMiddleware. I am using this middleware along with web middleware in my routes. Below is its code from the middleware.
所以我所做的是我创建了一个名为UUIDMiddleware. 我在我的路由中使用这个中间件和 web 中间件。下面是来自中间件的代码。
if($request->hasCookie('uuid'))
{
return $next($request);
}
else
{
$uuid = Uuid::generate();
$response = new Response();
return $response->withCookie(cookie()->forever('uuid', $uuid));
}
As you can see I am checking if cookie exists. If not, I am passing control to next request.
如您所见，我正在检查 cookie 是否存在。如果没有，我会将控制权传递给下一个请求。
The problem is when setting a cookie using return $response, I cannot pass control to next request. How do I resolve this?
问题是在使用 设置 cookie 时return $response，我无法将控制权传递给下一个请求。我该如何解决？
What happens in this case is if a cookie is not set, it sets a cookie and a blank screen shows up. If I refresh, I see the website with a cookie set.
在这种情况下会发生什么，如果没有设置 cookie，它会设置一个 cookie 并显示一个空白屏幕。如果我刷新，我会看到带有 cookie 集的网站。
There has to be a way to set cookie using middleware in the right way. How do I do it?
必须有一种方法以正确的方式使用中间件设置 cookie。我该怎么做？
回答by Rai
You can obtain the response object in middlewarelike so:
您可以像这样在中间件中获取响应对象：
public function handle($request, Closure $next)
{
$response = $next($request);
// Do something after the request is handled by the application
return $response;
}
So you could do something like this
所以你可以做这样的事情
if($request->hasCookie('uuid')) {
return $next($request);
}
$uuid = Uuid::generate();
$response = $next($request);
return $response->withCookie(cookie()->forever('uuid', $uuid));
回答by Eric McWinNEr
If you're using Laravel 5.8 and like me you want a solution that allows you set the expiration time of the cookie instead of setting it to forever, you could also do something like this in the middleware:
如果您使用的是 Laravel 5.8 并且像我一样想要一个允许您设置 cookie 的过期时间而不是将其设置为永远的解决方案，您也可以在中间件中执行以下操作：
public function handle($request, Closure $next)
{
$time = time() + 60 * 60 * 24; //One day
$res = $next($request);
return $res->cookie('cookie_name', $cookieValue, $time, "/");
}
This would set the cookie when the controller is done with the request and is returning a response.
这将在控制器完成请求并返回响应时设置 cookie。
