from django.shortcuts import redirect
from django.http import HttpResponseRedirect

class RedirectNextMixin:

    def redirect_to_next(self, request):
        """
        If a 'next' parameter was specified, redirect to the next page. This
        is used when the user is required to return to some page after the
        current view has finished its work.
        """

        if 'next' in request.GET:
            next_page = request.GET['next']
            return HttpResponseRedirect(next_page)
        else:
            return redirect('index')