Laravel - 如何在 AppServiceProvider 中获取当前用户 [英] Laravel - How to get current user in AppServiceProvider

问题描述

所以我通常使用 Auth::user() 获取当前用户，当我确定用户是否实际登录 Auth::check 时.但是，这在我的 AppServiceProvider 中似乎不起作用.我正在使用它在所有视图中共享数据.我 var_dump Auth::user() 和 Auth::check() 在登录时我得到 NULL> 和 false.

So I am usually getting the current user using Auth::user() and when I am determining if a user is actually logged in Auth::check. However this doesn't seem to work in my AppServiceProvider. I am using it to share data across all views. I var_dump both Auth::user() and Auth::check() while logged in and I get NULL and false.

如何在我的 AppServiceProvider 中获取当前用户?如果这是不可能的，那么如何在所有视图中获取每个用户唯一的数据(根据 user_id 不同的数据).这是我的澄清代码.

How can I get the current user inside my AppServiceProvider ? If that isn't possible, what is the way to get data that is unique for each user (data that is different according to the user_id) across all views. Here is my code for clarification.

if (Auth::check()) {
        $cart = Cart::where('user_id', Auth::user()->id);
        if ($cart) {
            view()->share('cart', $cart);

        }
    } else {
        view()->share('cartItems', Session::get('items'));
    }

推荐答案

Laravel 会话在中间件中初始化，因此您无法从服务提供者访问会话，因为它们在中间件之前 执行在请求生命周期中

Laravel session is initialized in a middleware so you can't access the session from a Service Provider, because they execute before the middleware in the request lifecycle

您应该使用中间件来共享会话中的变量

You should use a middleware to share your varibles from the session

如果由于其他原因您想在服务提供商处执行此操作，您可以使用 查看作曲家带有回调，如下所示:

If for some other reason you want to do it in a service provider, you could use a view composer with a callback, like this:

public function boot()
{
    //compose all the views....
    view()->composer('*', function ($view) 
    {
        $cart = Cart::where('user_id', Auth::user()->id);

        //...with this variable
        $view->with('cart', $cart );    
    });  
}

回调只会在视图真正被组合时执行，所以中间件已经被执行并且会话将可用

The callback will be executed only when the view is actually being composed, so middlewares will be already executed and session will be available

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