Problem with submit a form and redirect

Hi,

this is the controller function with some simplified code:

PHP Code:

public function index() {
  return view('layout', ['contactform' => $this->getContactform]);
}


public function getContactform() {
   
  if ($this->form_validation->withRequest($this->request)->run(NULL, 'contact') === true) {
    return redirect(current_url());
  } 

  return view('form');
} 


In my template:

PHP Code:

echo $contactform; // Object of class CodeIgniter\HTTP\RedirectResponse could not be converted to string 


I know the reason, but how can i fix this? If the form is valid i want to make a redirect but in this case the variable in the template is an object and not the view. This is the error message:
Object of class CodeIgniter\HTTP\RedirectResponse could not be converted to string