Route with http verb

Hi,
This may have been answered, but as the forum search is not working I need to ask.

I am trying to redirect to a page with parameters, but not sure how to configure the redirect, the route or even if the route is necessary.

Essentially I am trying to replicate the following http://mydomain/mypage/mymethod?weekending='something' in the redirect, i.e.

PHP Code:

return redirect()->route('named_route/weekending/25-10-2020'); 


And assuming my route would look something like

PHP Code:

$routes->post('named_route/varName/varValue', 'myPage::myMethod/parameters'); 


which would interact with my controller

PHP Code:

class myPage extends BaseController {
    
    public function index() {
    
         //This does something
    }

    
    public function myMethod() {
    
        if($this->request->getGetPost('weekending')) {
            
            //this does something else    
            
            }else{
            return redirect()->route('404');
            }
    }
}