laravel 访问控制器中的当前请求
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Accessing the current request in controller
提问by PHPst
In other MVC frameworks, accessing to the current request object is as simple as $this->request. However in the Laravel, I generally see that Request $requestis generally injected to each action (public function edit($id, Request $request)). It seems like a boilerplate. Is there any better way to access the request? (I now that I can use inheritance to use $this->request, I am looking for the Laravel way to do that.)
在其他 MVC 框架中，访问当前请求对象就像$this->request. 但是在 Laravel 中，我一般看到Request $request一般是注入到每个动作中（public function edit($id, Request $request)）。这似乎是一个样板。有没有更好的方法来访问请求？（我现在可以使用继承来使用$this->request，我正在寻找 Laravel 的方式来做到这一点。）
update:
更新：
I found out using app('request')I can access to the current request. However, I am not sure of its potential pros and cons.
我发现使用app('request')我可以访问当前请求。但是，我不确定它的潜在优点和缺点。
回答by miken32
In Laravel 5, you can use the request()helper:
在 Laravel 5 中，您可以使用request()帮助程序：
// to get the current request object
$request = request();
// or to just get a value from the request
$value = request("field", "default");
