docs: def edit_announcement_view(request, announcement_pk):
      ''' The view of a single manager announcement. '''
      announce = get_object_or_404(Announcement, pk=announcement_pk)
      profile = UserProfile.objects.get(user=request.user)
      if not (announce.incumbent == profile or request.user.is_superuser):
          return HttpResponseRedirect(
              reverse('managers:view_announcement', kwargs={"announcement_pk": announcement_pk}),
              )
      page_name = "Edit Announcement"
  
      announcement_form = AnnouncementForm(
          request.POST or None,
          instance=announce,
          profile=profile,
          editing=True,
          )
      if announcement_form.is_valid():
          announcement_form.save(request)
          return HttpResponseRedirect(
              reverse('managers:view_announcement', kwargs={"announcement_pk": announcement_pk}),
              )
  
      return render_to_response('edit_announcement.html', {
          'page_name': page_name,
          'announcement_form': announcement_form,
          }, context_instance=RequestContext(request))