Laravel 5.4 : Get logged in user id inside __construct()

问题

I am trying to access Auth::user()->id; inside constructor but it always return the error Trying to get property of non-object. I study in the laravel documentation that Session is not accessible inside constructor and also search on SO for this. I need logged in user id inside constructor because I have to fetch data from database and make it available for all its method. My current code is :

public function __construct(){
    $this->middleware('auth');
    $induction_status = TrainingStatusRecord::where('user_id',Auth::user()->id)->where('training','=','induction')->get();
    View::share('ind_status',$induction_status);
}

Is there any way (easy way) to get logged in user id inside constructor.

I will appreciate any help.

Thank You

回答1:

To share a variable in view AppServiceProvider is a good approach

Go to App\Providers\AppServiceProvider.php

Include facade on top of the page

use Illuminate\Support\Facades\Auth;

use App\TrainingStatusRecord;

and paste below code in boot method

view()->composer('*', function($view){
        if(Auth::user()){
            $induction_status = TrainingStatusRecord::where('user_id',Auth::user()->id)->where('training','=','induction')->get();
            View::share('induction_status',$induction_status);
        }
    });

Now you will be able to get your variable $induction_status in your app.

Reference https://laravel.com/docs/5.4/providers#the-boot-method

Hope it will help you.

回答2:

To solve this problem App\Providers\AppServiceProvider was indeed my first guess. This would work mostly but with an exception to access Session data.

So If you try to access Session data within boot method of AppServiceProvider you will get null. So to do this so it works perfectly good in any case Middleware is a good option. You can write this logic of sharing a variable to all your desired views. Just create a middleware and include that in your route or routegroup .

回答3:

Try this:

public function __construct(){
    $this->middleware(function ($request, $next) {
        $induction_status = TrainingStatusRecord::where('user_id',Auth::user()->id)->where('training','=','induction')->get();
    }
    View::share('induction_status',$induction_status);
}

来源：https://stackoverflow.com/questions/43133361/laravel-5-4-get-logged-in-user-id-inside-construct

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php

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laravel-5

laravel-5.4