def post(self, request):
"""Enrolls the currently logged-in user in a course.
Server-to-server calls may deactivate or modify the mode of existing enrollments. All other requests
go through `add_enrollment()`, which allows creation of new and reactivation of old enrollments.
"""
# Get the User, Course ID, and Mode from the request.
username = request.DATA.get('user', request.user.username)
course_id = request.DATA.get('course_details', {}).get('course_id')
if not course_id:
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={
"message":
u"Course ID must be specified to create a new enrollment."
})
try:
course_id = CourseKey.from_string(course_id)
except InvalidKeyError:
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={
"message":
u"No course '{course_id}' found for enrollment".format(
course_id=course_id)
})
mode = request.DATA.get('mode', CourseMode.HONOR)
has_api_key_permissions = self.has_api_key_permissions(request)
# Check that the user specified is either the same user, or this is a server-to-server request.
if not username:
username = request.user.username
if username != request.user.username and not has_api_key_permissions:
# Return a 404 instead of a 403 (Unauthorized). If one user is looking up
# other users, do not let them deduce the existence of an enrollment.
return Response(status=status.HTTP_404_NOT_FOUND)
if mode != CourseMode.HONOR and not has_api_key_permissions:
return Response(
status=status.HTTP_403_FORBIDDEN,
data={
"message":
u"User does not have permission to create enrollment with mode [{mode}]."
.format(mode=mode)
})
try:
# Lookup the user, instead of using request.user, since request.user may not match the username POSTed.
user = User.objects.get(username=username)
except ObjectDoesNotExist:
return Response(status=status.HTTP_406_NOT_ACCEPTABLE,
data={
'message':
u'The user {} does not exist.'.format(username)
})
embargo_response = embargo_api.get_embargo_response(
request, course_id, user)
if embargo_response:
return embargo_response
try:
is_active = request.DATA.get('is_active')
# Check if the requested activation status is None or a Boolean
if is_active is not None and not isinstance(is_active, bool):
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={
'message':
(u"'{value}' is an invalid enrollment activation status."
).format(value=is_active)
})
enrollment_attributes = request.DATA.get('enrollment_attributes')
enrollment = api.get_enrollment(username, unicode(course_id))
mode_changed = enrollment and mode is not None and enrollment[
'mode'] != mode
active_changed = enrollment and is_active is not None and enrollment[
'is_active'] != is_active
missing_attrs = []
if enrollment_attributes:
actual_attrs = [
u"{namespace}:{name}".format(**attr)
for attr in enrollment_attributes
]
missing_attrs = set(REQUIRED_ATTRIBUTES.get(
mode, [])) - set(actual_attrs)
if has_api_key_permissions and (mode_changed or active_changed):
if mode_changed and active_changed and not is_active:
# if the requester wanted to deactivate but specified the wrong mode, fail
# the request (on the assumption that the requester had outdated information
# about the currently active enrollment).
msg = u"Enrollment mode mismatch: active mode={}, requested mode={}. Won't deactivate.".format(
enrollment["mode"], mode)
log.warning(msg)
return Response(status=status.HTTP_400_BAD_REQUEST,
data={"message": msg})
if len(missing_attrs) > 0:
msg = u"Missing enrollment attributes: requested mode={} required attributes={}".format(
mode, REQUIRED_ATTRIBUTES.get(mode))
log.warning(msg)
return Response(status=status.HTTP_400_BAD_REQUEST,
data={"message": msg})
response = api.update_enrollment(
username,
unicode(course_id),
mode=mode,
is_active=is_active,
enrollment_attributes=enrollment_attributes)
else:
# Will reactivate inactive enrollments.
response = api.add_enrollment(username,
unicode(course_id),
mode=mode,
is_active=is_active)
email_opt_in = request.DATA.get('email_opt_in', None)
if email_opt_in is not None:
org = course_id.org
update_email_opt_in(request.user, org, email_opt_in)
return Response(response)
except CourseModeNotFoundError as error:
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={
"message":
(u"The course mode '{mode}' is not available for course '{course_id}'."
).format(mode="honor", course_id=course_id),
"course_details":
error.data
})
except CourseNotFoundError:
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={
"message":
u"No course '{course_id}' found for enrollment".format(
course_id=course_id)
})
except CourseEnrollmentExistsError as error:
return Response(data=error.enrollment)
except CourseEnrollmentError:
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={
"message":
(u"An error occurred while creating the new course enrollment for user "
u"'{username}' in course '{course_id}'").format(
username=username, course_id=course_id)
})
finally:
# Assumes that the ecommerce service uses an API key to authenticate.
if has_api_key_permissions:
current_enrollment = api.get_enrollment(
username, unicode(course_id))
audit_log('enrollment_change_requested',
course_id=unicode(course_id),
requested_mode=mode,
actual_mode=current_enrollment['mode']
if current_enrollment else None,
requested_activation=is_active,
actual_activation=current_enrollment['is_active']
if current_enrollment else None,
user_id=user.id)
def post(self, request):
"""Enrolls the currently logged-in user in a course.
Server-to-server calls may deactivate or modify the mode of existing enrollments. All other requests
go through `add_enrollment()`, which allows creation of new and reactivation of old enrollments.
"""
# Get the User, Course ID, and Mode from the request.
username = request.data.get('user', request.user.username)
course_id = request.data.get('course_details', {}).get('course_id')
if not course_id:
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={"message": u"Course ID must be specified to create a new enrollment."}
)
try:
course_id = CourseKey.from_string(course_id)
except InvalidKeyError:
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={
"message": u"No course '{course_id}' found for enrollment".format(course_id=course_id)
}
)
mode = request.data.get('mode')
has_api_key_permissions = self.has_api_key_permissions(request)
# Check that the user specified is either the same user, or this is a server-to-server request.
if not username:
username = request.user.username
if username != request.user.username and not has_api_key_permissions:
# Return a 404 instead of a 403 (Unauthorized). If one user is looking up
# other users, do not let them deduce the existence of an enrollment.
return Response(status=status.HTTP_404_NOT_FOUND)
if mode not in (CourseMode.AUDIT, CourseMode.HONOR, None) and not has_api_key_permissions:
return Response(
status=status.HTTP_403_FORBIDDEN,
data={
"message": u"User does not have permission to create enrollment with mode [{mode}].".format(
mode=mode
)
}
)
try:
# Lookup the user, instead of using request.user, since request.user may not match the username POSTed.
user = User.objects.get(username=username)
except ObjectDoesNotExist:
return Response(
status=status.HTTP_406_NOT_ACCEPTABLE,
data={
'message': u'The user {} does not exist.'.format(username)
}
)
embargo_response = embargo_api.get_embargo_response(request, course_id, user)
if embargo_response:
return embargo_response
try:
is_active = request.data.get('is_active')
# Check if the requested activation status is None or a Boolean
if is_active is not None and not isinstance(is_active, bool):
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={
'message': (u"'{value}' is an invalid enrollment activation status.").format(value=is_active)
}
)
enrollment_attributes = request.data.get('enrollment_attributes')
enrollment = api.get_enrollment(username, unicode(course_id))
mode_changed = enrollment and mode is not None and enrollment['mode'] != mode
active_changed = enrollment and is_active is not None and enrollment['is_active'] != is_active
missing_attrs = []
if enrollment_attributes:
actual_attrs = [
u"{namespace}:{name}".format(**attr)
for attr in enrollment_attributes
]
missing_attrs = set(REQUIRED_ATTRIBUTES.get(mode, [])) - set(actual_attrs)
if has_api_key_permissions and (mode_changed or active_changed):
if mode_changed and active_changed and not is_active:
# if the requester wanted to deactivate but specified the wrong mode, fail
# the request (on the assumption that the requester had outdated information
# about the currently active enrollment).
msg = u"Enrollment mode mismatch: active mode={}, requested mode={}. Won't deactivate.".format(
enrollment["mode"], mode
)
log.warning(msg)
return Response(status=status.HTTP_400_BAD_REQUEST, data={"message": msg})
if len(missing_attrs) > 0:
msg = u"Missing enrollment attributes: requested mode={} required attributes={}".format(
mode, REQUIRED_ATTRIBUTES.get(mode)
)
log.warning(msg)
return Response(status=status.HTTP_400_BAD_REQUEST, data={"message": msg})
response = api.update_enrollment(
username,
unicode(course_id),
mode=mode,
is_active=is_active,
enrollment_attributes=enrollment_attributes
)
else:
# Will reactivate inactive enrollments.
response = api.add_enrollment(username, unicode(course_id), mode=mode, is_active=is_active)
email_opt_in = request.data.get('email_opt_in', None)
if email_opt_in is not None:
org = course_id.org
update_email_opt_in(request.user, org, email_opt_in)
return Response(response)
except CourseModeNotFoundError as error:
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={
"message": (
u"The course mode '{mode}' is not available for course '{course_id}'."
).format(mode=mode, course_id=course_id),
"course_details": error.data
})
except CourseNotFoundError:
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={
"message": u"No course '{course_id}' found for enrollment".format(course_id=course_id)
}
)
except CourseEnrollmentExistsError as error:
return Response(data=error.enrollment)
except CourseEnrollmentError:
return Response(
status=status.HTTP_400_BAD_REQUEST,
data={
"message": (
u"An error occurred while creating the new course enrollment for user "
u"'{username}' in course '{course_id}'"
).format(username=username, course_id=course_id)
}
)
finally:
# Assumes that the ecommerce service uses an API key to authenticate.
if has_api_key_permissions:
current_enrollment = api.get_enrollment(username, unicode(course_id))
audit_log(
'enrollment_change_requested',
course_id=unicode(course_id),
requested_mode=mode,
actual_mode=current_enrollment['mode'] if current_enrollment else None,
requested_activation=is_active,
actual_activation=current_enrollment['is_active'] if current_enrollment else None,
user_id=user.id
)