Redirect back in Flask

Question

I have a DB Table called Item. Item has a status attribute, that can be either of

new
todo
doing
done

On my website I have two

Answer 1

I'm using the helper function which is recommended here: http://flask.pocoo.org/docs/reqcontext/

def redirect_url(default='index'):
    return request.args.get('next') or \
           request.referrer or \
           url_for(default)

Use it in in the view

def some_view():
    # some action
    return redirect(redirect_url())

Without any parameters it will redirect the user back to where he came from (request.referrer). You can add the get parameter next to specify a url. This is useful for oauth for example.

instagram.authorize(callback=url_for(".oauth_authorized",
                                                next=redirect_url(),
                                                _external=True))

I also added a default view if there should be no referrer for some reason

redirect_url('.another_view')

The snippet you linked basically does the same but more secure by ensuring you cannot get redirected to a malicious attacker's page on another host.