flow.py

        render_args.update(kwargs)
        return render_course_page(
                pctx, template, render_args,
                allow_instant_flow_requests=False)

    if request.method == "POST":
        if "submit" not in request.POST:
            raise SuspiciousOperation("odd POST parameters")

        if not flow_session.in_progress:
            raise PermissionDenied("Can't end a session that's already ended")

        # Actually end the flow session

        request.session["flow_session_id"] = None

        grade_info = finish_flow_session(fctx, flow_session, current_access_rule)

        if answered_count + unanswered_count:
            # This is a graded flow.

            if grade_info is None:
                messages.add_message(request, messages.INFO,
                        "A grade for your work has not yet been assigned. "
                        "Please check back later for grade information.")

                return render_finish_response(
                        "course/flow-completion.html",
                        last_page_nr=None,
                        completion_text=completion_text)

            return render_finish_response(
                    "course/flow-completion-grade.html",
                    completion_text=completion_text,
                    grade_info=grade_info)

        else:
            # {{{ no grade

            return render_finish_response(
                    "course/flow-completion.html",
                    last_page_nr=None,
                    completion_text=completion_text)

            # }}}

    if (answered_count + unanswered_count == 0
            and fctx.flow_commit_sha == fctx.course_commit_sha):
        # Not serious--no questions in flow, and no new version available.
        # No need to end the flow visit.

        return render_finish_response(
                "course/flow-completion.html",
                last_page_nr=flow_session.page_count-1,
                completion_text=completion_text)

    elif not flow_session.in_progress:
        # Just reviewing: re-show grades.
        grade_info = gather_grade_info(flow_session, answer_visits)

        return render_finish_response(
                "course/flow-completion-grade.html",
                completion_text=completion_text,
                grade_info=grade_info)

    else:
        # confirm ending flow
        return render_finish_response(
                "course/flow-confirm-completion.html",
                last_page_nr=flow_session.page_count-1,
                answered_count=answered_count,
                unanswered_count=unanswered_count,
                total_count=answered_count+unanswered_count)

# }}}

# vim: foldmethod=marker