def _can_access_descriptor_with_start_date(user, descriptor, course_key): # pylint: disable=invalid-name
"""
Checks if a user has access to a descriptor based on its start date.
If there is no start date specified, grant access.
Else, check if we're past the start date.
Note:
We do NOT check whether the user is staff or if the descriptor
is detached... it is assumed both of these are checked by the caller.
Arguments:
user (User): the user whose descriptor access we are checking.
descriptor (AType): the descriptor for which we are checking access,
where AType is CourseDescriptor, CourseOverview, or any other class
that represents a descriptor and has the attributes .location, .id,
.start, and .days_early_for_beta.
Returns:
AccessResponse: The result of this access check. Possible results are
ACCESS_GRANTED or a StartDateError.
"""
start_dates_disabled = settings.FEATURES['DISABLE_START_DATES']
if start_dates_disabled and not is_masquerading_as_student(
user, course_key):
return ACCESS_GRANTED
else:
now = datetime.now(UTC())
effective_start = _adjust_start_date_for_beta_testers(
user, descriptor, course_key=course_key)
if (descriptor.start is None or now > effective_start
or in_preview_mode()):
return ACCESS_GRANTED
return StartDateError(descriptor.start)
def test_courseware_access(self):
self.login()
course_with_prereq = CourseFactory.create(start=self.LAST_WEEK, mobile_available=True)
prerequisite_course = CourseFactory.create()
set_prerequisite_courses(course_with_prereq.id, [unicode(prerequisite_course.id)])
# Create list of courses with various expected courseware_access responses and corresponding expected codes
courses = [
course_with_prereq,
CourseFactory.create(start=self.NEXT_WEEK, mobile_available=True),
CourseFactory.create(visible_to_staff_only=True, mobile_available=True),
CourseFactory.create(start=self.LAST_WEEK, mobile_available=True, visible_to_staff_only=False),
]
expected_error_codes = [
MilestoneAccessError().error_code, # 'unfulfilled_milestones'
StartDateError(self.NEXT_WEEK).error_code, # 'course_not_started'
VisibilityError().error_code, # 'not_visible_to_user'
None,
]
# Enroll in all the courses
for course in courses:
self.enroll(course.id)
# Verify courses have the correct response through error code. Last enrolled course is first course in response
response = self.api_response()
for course_index in range(len(courses)):
result = response.data[course_index]['course']['courseware_access']
self.assertEqual(result['error_code'], expected_error_codes[::-1][course_index])
if result['error_code'] is not None:
self.assertFalse(result['has_access'])
def check_start_date(user,
days_early_for_beta,
start,
course_key,
display_error_to_user=True):
"""
Verifies whether the given user is allowed access given the
start date and the Beta offset for the given course.
Arguments:
display_error_to_user: If True, display this error to users in the UI.
Returns:
AccessResponse: Either ACCESS_GRANTED or StartDateError.
"""
start_dates_disabled = settings.FEATURES['DISABLE_START_DATES']
masquerading_as_student = is_masquerading_as_student(user, course_key)
if start_dates_disabled and not masquerading_as_student:
return ACCESS_GRANTED
else:
now = datetime.now(UTC)
if start is None or in_preview_mode() or get_course_masquerade(
user, course_key):
return ACCESS_GRANTED
effective_start = adjust_start_date(user, days_early_for_beta, start,
course_key)
if now > effective_start:
return ACCESS_GRANTED
return StartDateError(start,
display_error_to_user=display_error_to_user)
def test_unreleased_course(self):
# ensure the course always starts in the future
self.course = CourseFactory.create(
mobile_available=True, static_asset_path="needed_for_split")
self.course.start = timezone.now() + datetime.timedelta(days=365)
self.init_course_access()
self._verify_response(self.ALLOW_ACCESS_TO_UNRELEASED_COURSE,
StartDateError(self.course.start))
def check_start_date(user, days_early_for_beta, start, course_key):
"""
Verifies whether the given user is allowed access given the
start date and the Beta offset for the given course.
Returns:
AccessResponse: Either ACCESS_GRANTED or StartDateError.
"""
start_dates_disabled = settings.FEATURES['DISABLE_START_DATES']
if start_dates_disabled and not is_masquerading_as_student(user, course_key):
return ACCESS_GRANTED
else:
now = datetime.now(UTC())
effective_start = adjust_start_date(user, days_early_for_beta, start, course_key)
if start is None or now > effective_start or in_preview_mode():
return ACCESS_GRANTED
return StartDateError(start)
def check_start_date(user, days_early_for_beta, start, course_key):
"""
Verifies whether the given user is allowed access given the
start date and the Beta offset for the given course.
Returns:
AccessResponse: Either ACCESS_GRANTED or StartDateError.
"""
start_dates_disabled = settings.FEATURES['DISABLE_START_DATES']
masquerading_as_student = is_masquerading_as_student(user, course_key)
masquerading_as_specific_student = is_masquerading_as_specific_student(
user, course_key)
if start_dates_disabled and not masquerading_as_student:
return ACCESS_GRANTED
else:
now = datetime.now(UTC)
if start is None or in_preview_mode():
return ACCESS_GRANTED
effective_start = adjust_start_date(user, days_early_for_beta, start,
course_key)
if now > effective_start:
return ACCESS_GRANTED
if get_course_masquerade(user, course_key):
if masquerading_as_student or (
masquerading_as_specific_student
and not has_staff_roles(user, course_key)):
request = get_current_request()
PageLevelMessages.register_warning_message(
request,
HTML(
_('This user does not have access to this content due to the content start date'
)),
once_only=True)
return ACCESS_GRANTED
return StartDateError(start)
def test_unreleased_course(self):
self.init_course_access()
self._verify_response(self.ALLOW_ACCESS_TO_UNRELEASED_COURSE,
StartDateError(self.course.start))