MarvinLabs\SetupWizard\Controllers\WizardController::previousStep PHP Метод

    protected function previousStep(Request $request)
    {
        try {
            // Undo the previous step. If success, we can redirect to its form
            $previousStep = \SetupWizard::previousStep();
            if (!$previousStep->undo()) {
                return view()->make('setup_wizard::steps.default', ['errors' => $previousStep->getMessageBag()]);
            }
            return redirect()->route('setup_wizard.show', ['slug' => $previousStep->getSlug()]);
        } catch (StepNotFoundException $e) {
            return redirect()->route('setup_wizard.show');
        }
    }