In GAE (Python), using the webApp Framework, calling self.redirect('some_url') redirects the user to that URL via the GET method. Is it possible to do a (redirect) via the POST method with some parameters as well?
If possible, how?
This is not possible due to how most clients implement redirection :
However, most existing user agent implementations treat 302 as if it were a 303 response, performing a GET on the Location field-value regardless of the original request method.
So you must use a workaround (like simply calling the method post() from the RequestHandler) or forget the idea.