App\Http\Middleware\WalledGarden::handle PHP Method

    public function handle($request, Closure $next)
    {
        $exempt = false;
        $walled_garden_enabled = Setting::get('walled-garden.enabled');
        $exemptionPath = Setting::get('walled-garden.exemptions-path');
        $exemptionsRegEx = Setting::get('walled-garden.exemptions-regex');
        // Redirect to the login page if the user is not authenticated and the site
        // is configured as a walled garden, except if the request is going to a page
        // or route that is exempt from authentication.
        if ($walled_garden_enabled) {
            $authenticated = $this->auth->check();
            if (!$authenticated) {
                $requestURI = $request->getUri();
                $requestPath = $request->path();
                foreach ($exemptionPath as $exPath) {
                    if ($exPath == $requestPath) {
                        $exempt = true;
                        break;
                    }
                }
                if (!$exempt) {
                    foreach ($exemptionsRegEx as $regEx) {
                        if (preg_match($regEx, $requestPath)) {
                            $exempt = true;
                            break;
                        }
                    }
                }
                if (!$exempt) {
                    //                    $request->flashExcept(['password', 'password_confirmation']);
                    $request->session()->reflash();
                    return redirect()->guest('auth/login');
                }
            }
        }
        // Otherwise just continue on.
        return $next($request);
    }