Laravel 5 how to use get parameter from url with controller's sign in method

When you have an URI such as login?r=articles, you can retrieve articles like this:

request()->r

You can also use request()->has('r') to determine if it's present in the URI.

And request()->filled('r') to find out if it's present in the URI and its value is not empty.

// only query

$query_array = $request->query();

or

$query = $request->query('r');

// Without Query String...

$url = $request->url();

// With Query String...

$url = $request->fullUrl();

If you are using Laravel then use their helper which works just out of the box, i.e. if your route or url has a auth middlewere and user is not logged in then it goes to login and in your postSign or inside attempt just

 return redirect()->intended('home'); //home is the fallback if no intended url is provide

UserController

public function postSignIn(Request $request){
$this->validate($request, [
    'login-email' => 'required|email',
    'login-password' => 'required'
]);

if ( Auth::attempt(['email' => $request['login-email'], 'password' => $request['login-password']]) )
{

    return redirect()->intended('user.account);
}
return redirect()->back();

}