src/ShopifyApp/Traits/AuthControllerTrait.php
protected function returnTo()
    {
        // Set in AuthShop middleware
        $return_to = Session::get('return_to');
        if ($return_to) {
            Session::forget('return_to');

            return Redirect::to($return_to);
        }

        // No return_to, go to home route
        return Redirect::route('home');
    }
protected function returnTo()
    {
        // Set in AuthShop middleware
        $return_to = Session::get('return_to');
        if ($return_to) {
            Session::forget('return_to');

            return Redirect::to($return_to);
        }

        // No return_to, go to home route
        return Redirect::route('home');
    }
Determines where to redirect after successfull auth.

@return string