Laravel 5.2 add Auth::id() to Posted data

I started to learn working with Laravel 5.2 framework about 3 hours ago ^^

I did add task form and it works but i made task_starter_id column in database

and data that posted by form is only task title and content from input values

And finally my question is i want to add starter id with Auth::id(); i can't do it

I know the old way to post data in laravel 4

$task = new App\Tasks();
 // inputs
$task->save();

But i want to do this with laravel 5 way if it's possible

Here's route.php

Route::post('tasks', function(Request $req) {

    // return $req::all();

    $task = App\Tasks::create($req::all());

    return redirect('tasks');

});

Blade template :

            <div class="panel-body">
                    {!! Form::open() !!}
                <div class="form-group">
                    {!! Form::label('task_title', 'Task Title :') !!}
                    {!! Form::text('task_title', null, 
                                    array(
                                        'class' => 'form-control', 
                                        'id' => 'task_title', 
                                        'placeholder' => 'Task Title'
                                        )) !!}
                </div>
                <div class="form-group">
                    {!! Form::label('task_content', 'Task Content :') !!}
                    {!! Form::text('task_content', null, 
                                    array(
                                        'class' => 'form-control', 
                                        'id' => 'task_content', 
                                        'placeholder' => 'Task Content'
                                        )) !!}
                </div>
                {!! Form::submit('Add Task', ['class' => 'btn btn-primary btn-sm']) !!}
                    {!! Form::close() !!}
            </div>

Model

class Tasks extends Model
{

    protected $table = 'tasks';

    protected $fillable = ['task_title','task_content','task_starter_id'];

}

I hope that i explained perfectly what i want, Thanks all.

via Chebli Mohamed