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# -*- coding: utf-8 -*-
from __future__ import division
__copyright__ = "Copyright (C) 2014 Andreas Kloeckner"
__license__ = """
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
"""
from django.shortcuts import ( # noqa
get_object_or_404, redirect)
from django.db import transaction
from django.core.exceptions import ( # noqa
PermissionDenied, SuspiciousOperation,
ObjectDoesNotExist)
from django import http
from course.models import (
FlowSession, FlowPageData, FlowPageVisit, FlowPageVisitGrade,
GradeChange,
get_flow_grading_opportunity)
from course.constants import participation_role
from course.utils import (
course_view, render_course_page,
FlowPageContext)
@course_view
@transaction.atomic
def grade_flow_page(pctx, flow_session_id, page_ordinal):
# request = pctx.request
if pctx.role not in [
participation_role.instructor,
participation_role.teaching_assistant]:
raise PermissionDenied("must be instructor or TA to view grades")
flow_session = get_object_or_404(FlowSession, id=int(flow_session_id))
if flow_session.course.pk != pctx.course.pk:
raise SuspiciousOperation("Flow session not part of specified course")
fpctx = FlowPageContext(pctx.repo, pctx.course, flow_session.flow_id,
page_ordinal, participation=flow_session.participation,
flow_session=flow_session)
if fpctx.page_desc is None:
raise http.Http404()
# {{{ reproduce student view
if fpctx.page.expects_answer():
if fpctx.prev_answer_visit is not None:
answer_data = fpctx.prev_answer_visit.answer
most_recent_grade = fpctx.prev_answer_visit.get_most_recent_grade()
if most_recent_grade is not None:
if most_recent_grade.feedback is not None:
from course.page import AnswerFeedback
feedback = AnswerFeedback.from_json(
most_recent_grade.feedback)
else:
feedback = None
grade_data = most_recent_grade.grade_data
else:
feedback = None
grade_data = None
else:
feedback = None
form = fpctx.page.make_form(
fpctx.page_context, fpctx.page_data.data,
answer_data, answer_is_final=True)
else:
form = None
feedback = None
if form is not None:
form_html = fpctx.page.form_to_html(pctx.request, form, answer_data)
else:
form_html = None
max_points = None
points_awarded = None
if fpctx.page.expects_answer():
max_points = fpctx.page.max_points(fpctx.page_data)
if feedback is not None and feedback.correctness is not None:
points_awarded = max_points * feedback.correctness
# }}}
grading_opportunity = get_flow_grading_opportunity(
pctx.course, flow_session.flow_id, fpctx.flow_desc)
return render_course_page(
pctx,
"course/grade-flow-page.html",
{
"flow_identifier": fpctx.flow_identifier,
"flow_session": flow_session,
"flow_desc": fpctx.flow_desc,
"ordinal": fpctx.ordinal,
"page_data": fpctx.page_data,
"body": fpctx.page.body(
fpctx.page_context, fpctx.page_data.data),
"form": form,
"form_html": form_html,
"feedback": feedback,
"max_points": max_points,
"points_awarded": points_awarded,
"grading_opportunity": grading_opportunity,
})
# vim: foldmethod=marker