def post(self, course_uuid, assignment_uuid):
course = Course.get_active_by_uuid_or_404(course_uuid)
assignment = Assignment.get_active_by_uuid_or_404(assignment_uuid)
if not assignment.answer_grace and not allow(MANAGE, assignment):
abort(
403,
title="Answer Not Submitted",
message=
"Sorry, the answer deadline has passed. No answers can be submitted after the deadline unless the instructor submits the answer for you."
)
require(
CREATE,
Answer(course_id=course.id),
title="Answer Not Submitted",
message=
"Answers can be submitted only by those enrolled in the course. Please double-check your enrollment in this course."
)
restrict_user = not allow(MANAGE, assignment)
answer = Answer(assignment_id=assignment.id)
params = new_answer_parser.parse_args()
answer.content = params.get("content")
answer.draft = params.get("draft")
file_uuid = params.get('file_id')
attachment = None
if file_uuid:
attachment = File.get_by_uuid_or_404(file_uuid)
answer.file_id = attachment.id
else:
answer.file_id = None
# non-drafts must have content
if not answer.draft and not answer.content and not file_uuid:
abort(
400,
title="Answer Not Submitted",
message=
"Please provide content in the text editor or upload a file and try submitting again."
)
user_uuid = params.get("user_id")
group_uuid = params.get("group_id")
# we allow instructor and TA to submit multiple answers for other users in the class
if user_uuid and not allow(MANAGE, Answer(course_id=course.id)):
abort(
400,
title="Answer Not Submitted",
message=
"Only instructors and teaching assistants can submit an answer on behalf of another."
)
if group_uuid and not assignment.enable_group_answers:
abort(400,
title="Answer Not Submitted",
message="Group answers are not allowed for this assignment.")
if group_uuid and not allow(MANAGE, Answer(course_id=course.id)):
abort(
400,
title="Answer Not Submitted",
message=
"Only instructors and teaching assistants can submit an answer on behalf of a group."
)
if group_uuid and user_uuid:
abort(
400,
title="Answer Not Submitted",
message=
"You cannot submit an answer for a user and a group at the same time."
)
user = User.get_by_uuid_or_404(
user_uuid) if user_uuid else current_user
group = Group.get_active_by_uuid_or_404(
group_uuid) if group_uuid else None
if restrict_user and assignment.enable_group_answers and not group:
group = current_user.get_course_group(course.id)
if group == None:
abort(
400,
title="Answer Not Submitted",
message=
"You are currently not in any group for this course. Please contact your instructor to be added to a group."
)
check_for_existing_answers = False
if group and assignment.enable_group_answers:
if group.course_id != course.id:
abort(
400,
title="Answer Not Submitted",
message=
"Group answers can be submitted to courses they belong in."
)
answer.user_id = None
answer.group_id = group.id
answer.comparable = True
check_for_existing_answers = True
else:
answer.user_id = user.id
answer.group_id = None
course_role = User.get_user_course_role(answer.user_id, course.id)
# only system admin can add answers for themselves to a class without being enrolled in it
# required for managing comparison examples as system admin
if (not course_role or course_role == CourseRole.dropped
) and current_user.system_role != SystemRole.sys_admin:
abort(
400,
title="Answer Not Submitted",
message=
"Answers can be submitted only by those enrolled in the course. Please double-check your enrollment in this course."
)
if course_role == CourseRole.student and assignment.enable_group_answers:
abort(
400,
title="Answer Not Submitted",
message=
"Students can only submit group answers for this assignment."
)
# we allow instructor and TA to submit multiple answers for their own,
# but not for student. Each student can only have one answer.
if course_role and course_role == CourseRole.student:
check_for_existing_answers = True
answer.comparable = True
else:
# instructor / TA / Sys Admin can mark the answer as non-comparable, unless the answer is for a student
answer.comparable = params.get("comparable")
if check_for_existing_answers:
# check for answers with user_id or group_id
prev_answers = Answer.query \
.filter_by(
assignment_id=assignment.id,
user_id=answer.user_id,
group_id=answer.group_id,
active=True
) \
.all()
# check if there is a previous answer submitted for the student
non_draft_answers = [
prev_answer for prev_answer in prev_answers
if not prev_answer.draft
]
if len(non_draft_answers) > 0:
abort(
400,
title="Answer Not Submitted",
message=
"An answer has already been submitted for this assignment by you or on your behalf."
)
# check if there is a previous draft answer submitted for the student (soft-delete if present)
draft_answers = [
prev_answer for prev_answer in prev_answers
if prev_answer.draft
]
for draft_answer in draft_answers:
draft_answer.active = False
# set submission date if answer is being submitted for the first time
if not answer.draft and not answer.submission_date:
answer.submission_date = datetime.datetime.utcnow()
answer.update_attempt(params.get('attempt_uuid'),
params.get('attempt_started', None),
params.get('attempt_ended', None))
db.session.add(answer)
db.session.commit()
on_answer_create.send(self,
event_name=on_answer_create.name,
user=current_user,
course_id=course.id,
answer=answer,
data=marshal(
answer,
dataformat.get_answer(restrict_user)))
if attachment:
on_attach_file.send(self,
event_name=on_attach_file.name,
user=current_user,
course_id=course.id,
file=attachment,
data={
'answer_id': answer.id,
'file_id': attachment.id
})
# update course & assignment grade for user if answer is fully submitted
if not answer.draft:
if answer.user:
assignment.calculate_grade(answer.user)
course.calculate_grade(answer.user)
elif answer.group:
assignment.calculate_group_grade(answer.group)
course.calculate_group_grade(answer.group)
return marshal(answer, dataformat.get_answer(restrict_user))
def post(self, course_uuid, assignment_uuid):
course = Course.get_active_by_uuid_or_404(course_uuid)
assignment = Assignment.get_active_by_uuid_or_404(assignment_uuid)
if not assignment.answer_grace and not allow(MANAGE, assignment):
abort(403, title="Answer Not Submitted", message="Sorry, the answer deadline has passed. No answers can be submitted after the deadline unless the instructor submits the answer for you.")
require(CREATE, Answer(course_id=course.id),
title="Answer Not Submitted",
message="Answers can be submitted only by those enrolled in the course. Please double-check your enrollment in this course.")
restrict_user = not allow(MANAGE, assignment)
answer = Answer(assignment_id=assignment.id)
params = new_answer_parser.parse_args()
answer.content = params.get("content")
answer.draft = params.get("draft")
file_uuid = params.get('file_id')
attachment = None
if file_uuid:
attachment = File.get_by_uuid_or_404(file_uuid)
answer.file_id = attachment.id
else:
answer.file_id = None
# non-drafts must have content
if not answer.draft and not answer.content and not file_uuid:
abort(400, title="Answer Not Submitted", message="Please provide content in the text editor or upload a file and try submitting again.")
user_uuid = params.get("user_id")
group_uuid = params.get("group_id")
# we allow instructor and TA to submit multiple answers for other users in the class
if user_uuid and not allow(MANAGE, Answer(course_id=course.id)):
abort(400, title="Answer Not Submitted", message="Only instructors and teaching assistants can submit an answer on behalf of another.")
if group_uuid and not assignment.enable_group_answers:
abort(400, title="Answer Not Submitted", message="Group answers are not allowed for this assignment.")
if group_uuid and not allow(MANAGE, Answer(course_id=course.id)):
abort(400, title="Answer Not Submitted", message="Only instructors and teaching assistants can submit an answer on behalf of a group.")
if group_uuid and user_uuid:
abort(400, title="Answer Not Submitted", message="You cannot submit an answer for a user and a group at the same time.")
user = User.get_by_uuid_or_404(user_uuid) if user_uuid else current_user
group = Group.get_active_by_uuid_or_404(group_uuid) if group_uuid else None
if restrict_user and assignment.enable_group_answers and not group:
group = current_user.get_course_group(course.id)
if group == None:
abort(400, title="Answer Not Submitted",
message="You are currently not in any group for this course. Please contact your instructor to be added to a group.")
check_for_existing_answers = False
if group and assignment.enable_group_answers:
if group.course_id != course.id:
abort(400, title="Answer Not Submitted",
message="Group answers can be submitted to courses they belong in.")
answer.user_id = None
answer.group_id = group.id
answer.comparable = True
check_for_existing_answers = True
else:
answer.user_id = user.id
answer.group_id = None
course_role = User.get_user_course_role(answer.user_id, course.id)
# only system admin can add answers for themselves to a class without being enrolled in it
# required for managing comparison examples as system admin
if (not course_role or course_role == CourseRole.dropped) and current_user.system_role != SystemRole.sys_admin:
abort(400, title="Answer Not Submitted", message="Answers can be submitted only by those enrolled in the course. Please double-check your enrollment in this course.")
if course_role == CourseRole.student and assignment.enable_group_answers:
abort(400, title="Answer Not Submitted", message="Students can only submit group answers for this assignment.")
# we allow instructor and TA to submit multiple answers for their own,
# but not for student. Each student can only have one answer.
if course_role and course_role == CourseRole.student:
check_for_existing_answers = True
answer.comparable = True
else:
# instructor / TA / Sys Admin can mark the answer as non-comparable, unless the answer is for a student
answer.comparable = params.get("comparable")
if check_for_existing_answers:
# check for answers with user_id or group_id
prev_answers = Answer.query \
.filter_by(
assignment_id=assignment.id,
user_id=answer.user_id,
group_id=answer.group_id,
active=True
) \
.all()
# check if there is a previous answer submitted for the student
non_draft_answers = [prev_answer for prev_answer in prev_answers if not prev_answer.draft]
if len(non_draft_answers) > 0:
abort(400, title="Answer Not Submitted", message="An answer has already been submitted for this assignment by you or on your behalf.")
# check if there is a previous draft answer submitted for the student (soft-delete if present)
draft_answers = [prev_answer for prev_answer in prev_answers if prev_answer.draft]
for draft_answer in draft_answers:
draft_answer.active = False
# set submission date if answer is being submitted for the first time
if not answer.draft and not answer.submission_date:
answer.submission_date = datetime.datetime.utcnow()
answer.update_attempt(
params.get('attempt_uuid'),
params.get('attempt_started', None),
params.get('attempt_ended', None)
)
db.session.add(answer)
db.session.commit()
on_answer_create.send(
self,
event_name=on_answer_create.name,
user=current_user,
course_id=course.id,
answer=answer,
data=marshal(answer, dataformat.get_answer(restrict_user)))
if attachment:
on_attach_file.send(
self,
event_name=on_attach_file.name,
user=current_user,
course_id=course.id,
file=attachment,
data={'answer_id': answer.id, 'file_id': attachment.id})
# update course & assignment grade for user if answer is fully submitted
if not answer.draft:
if answer.user:
assignment.calculate_grade(answer.user)
course.calculate_grade(answer.user)
elif answer.group:
assignment.calculate_group_grade(answer.group)
course.calculate_group_grade(answer.group)
return marshal(answer, dataformat.get_answer(restrict_user))
