def _get_resume_course_info(self, request, course_id):
"""
Returns information relevant to resume course functionality.
Returns a tuple: (has_visited_course, resume_course_url)
has_visited_course: True if the user has ever completed a block, False otherwise.
resume_course_url: The URL of the 'resume course' block if the user has completed a block,
otherwise the URL of the first block to start the course.
"""
course_outline_root_block = get_course_outline_block_tree(
request, course_id, request.user)
resume_block = get_resume_block(
course_outline_root_block) if course_outline_root_block else None
has_visited_course = bool(resume_block)
if resume_block:
resume_course_url = resume_block['lms_web_url']
else:
start_block = get_start_block(
course_outline_root_block
) if course_outline_root_block else None
resume_course_url = start_block[
'lms_web_url'] if start_block else None
return has_visited_course, resume_course_url
def get(self, request, *args, **kwargs):
course_key_string = kwargs.get('course_key_string')
course_key = CourseKey.from_string(course_key_string)
course_usage_key = modulestore().make_course_usage_key(course_key)
if not course_home_mfe_outline_tab_is_active(course_key):
raise Http404
# Enable NR tracing for this view based on course
monitoring_utils.set_custom_attribute('course_id', course_key_string)
monitoring_utils.set_custom_attribute('user_id', request.user.id)
monitoring_utils.set_custom_attribute('is_staff',
request.user.is_staff)
course = get_course_with_access(request.user,
'load',
course_key,
check_if_enrolled=False)
masquerade_object, request.user = setup_masquerade(
request,
course_key,
staff_access=has_access(request.user, 'staff', course_key),
reset_masquerade_data=True,
)
user_is_masquerading = is_masquerading(
request.user, course_key, course_masquerade=masquerade_object)
course_overview = CourseOverview.get_from_id(course_key)
enrollment = CourseEnrollment.get_enrollment(request.user, course_key)
allow_anonymous = COURSE_ENABLE_UNENROLLED_ACCESS_FLAG.is_enabled(
course_key)
allow_public = allow_anonymous and course.course_visibility == COURSE_VISIBILITY_PUBLIC
allow_public_outline = allow_anonymous and course.course_visibility == COURSE_VISIBILITY_PUBLIC_OUTLINE
# User locale settings
user_timezone_locale = user_timezone_locale_prefs(request)
user_timezone = user_timezone_locale['user_timezone']
dates_tab_link = request.build_absolute_uri(
reverse('dates', args=[course.id]))
if course_home_mfe_dates_tab_is_active(course.id):
dates_tab_link = get_learning_mfe_home_url(course_key=course.id,
view_name='dates')
# Set all of the defaults
access_expiration = None
course_blocks = None
course_goals = {'goal_options': [], 'selected_goal': None}
course_tools = CourseToolsPluginManager.get_enabled_course_tools(
request, course_key)
dates_widget = {
'course_date_blocks': [],
'dates_tab_link': dates_tab_link,
'user_timezone': user_timezone,
}
enroll_alert = {
'can_enroll': True,
'extra_text': None,
}
handouts_html = None
offer_data = None
resume_course = {
'has_visited_course': False,
'url': None,
}
welcome_message_html = None
is_enrolled = enrollment and enrollment.is_active
is_staff = bool(has_access(request.user, 'staff', course_key))
show_enrolled = is_enrolled or is_staff
if show_enrolled:
course_blocks = get_course_outline_block_tree(
request, course_key_string, request.user)
date_blocks = get_course_date_blocks(course,
request.user,
request,
num_assignments=1)
dates_widget['course_date_blocks'] = [
block for block in date_blocks
if not isinstance(block, TodaysDate)
]
handouts_html = get_course_info_section(request, request.user,
course, 'handouts')
welcome_message_html = get_current_update_for_user(request, course)
offer_data = generate_offer_data(request.user, course_overview)
access_expiration = get_access_expiration_data(
request.user, course_overview)
# Only show the set course goal message for enrolled, unverified
# users in a course that allows for verified statuses.
is_already_verified = CourseEnrollment.is_enrolled_as_verified(
request.user, course_key)
if not is_already_verified and has_course_goal_permission(
request, course_key_string, {'is_enrolled': is_enrolled}):
course_goals = {
'goal_options':
valid_course_goals_ordered(include_unsure=True),
'selected_goal': None
}
selected_goal = get_course_goal(request.user, course_key)
if selected_goal:
course_goals['selected_goal'] = {
'key': selected_goal.goal_key,
'text': get_course_goal_text(selected_goal.goal_key),
}
try:
resume_block = get_key_to_last_completed_block(
request.user, course.id)
resume_course['has_visited_course'] = True
resume_path = reverse('jump_to',
kwargs={
'course_id': course_key_string,
'location': str(resume_block)
})
resume_course['url'] = request.build_absolute_uri(resume_path)
except UnavailableCompletionData:
start_block = get_start_block(course_blocks)
resume_course['url'] = start_block['lms_web_url']
elif allow_public_outline or allow_public or user_is_masquerading:
course_blocks = get_course_outline_block_tree(
request, course_key_string, None)
if allow_public or user_is_masquerading:
handouts_html = get_course_info_section(
request, request.user, course, 'handouts')
if not show_enrolled:
if CourseMode.is_masters_only(course_key):
enroll_alert['can_enroll'] = False
enroll_alert['extra_text'] = _(
'Please contact your degree administrator or '
'edX Support if you have questions.')
elif course.invitation_only:
enroll_alert['can_enroll'] = False
data = {
'access_expiration': access_expiration,
'course_blocks': course_blocks,
'course_goals': course_goals,
'course_tools': course_tools,
'dates_widget': dates_widget,
'enroll_alert': enroll_alert,
'handouts_html': handouts_html,
'has_ended': course.has_ended(),
'offer': offer_data,
'resume_course': resume_course,
'welcome_message_html': welcome_message_html,
}
context = self.get_serializer_context()
context['course_overview'] = course_overview
context['enable_links'] = show_enrolled or allow_public
context['enrollment'] = enrollment
serializer = self.get_serializer_class()(data, context=context)
return Response(serializer.data)
def get(self, request, *args, **kwargs):
course_key_string = kwargs.get('course_key_string')
course_key = CourseKey.from_string(course_key_string)
course_usage_key = modulestore().make_course_usage_key(course_key)
if course_home_legacy_is_active(course_key):
raise Http404
# Enable NR tracing for this view based on course
monitoring_utils.set_custom_attribute('course_id', course_key_string)
monitoring_utils.set_custom_attribute('user_id', request.user.id)
monitoring_utils.set_custom_attribute('is_staff',
request.user.is_staff)
course = get_course_with_access(request.user,
'load',
course_key,
check_if_enrolled=False)
masquerade_object, request.user = setup_masquerade(
request,
course_key,
staff_access=has_access(request.user, 'staff', course_key),
reset_masquerade_data=True,
)
user_is_masquerading = is_masquerading(
request.user, course_key, course_masquerade=masquerade_object)
course_overview = CourseOverview.get_from_id(course_key)
enrollment = CourseEnrollment.get_enrollment(request.user, course_key)
allow_anonymous = COURSE_ENABLE_UNENROLLED_ACCESS_FLAG.is_enabled(
course_key)
allow_public = allow_anonymous and course.course_visibility == COURSE_VISIBILITY_PUBLIC
allow_public_outline = allow_anonymous and course.course_visibility == COURSE_VISIBILITY_PUBLIC_OUTLINE
# User locale settings
user_timezone_locale = user_timezone_locale_prefs(request)
user_timezone = user_timezone_locale['user_timezone']
if course_home_legacy_is_active(course.id):
dates_tab_link = request.build_absolute_uri(
reverse('dates', args=[course.id]))
else:
dates_tab_link = get_learning_mfe_home_url(course_key=course.id,
view_name='dates')
# Set all of the defaults
access_expiration = None
cert_data = None
course_blocks = None
course_goals = {'goal_options': [], 'selected_goal': None}
course_tools = CourseToolsPluginManager.get_enabled_course_tools(
request, course_key)
dates_widget = {
'course_date_blocks': [],
'dates_tab_link': dates_tab_link,
'user_timezone': user_timezone,
}
enroll_alert = {
'can_enroll': True,
'extra_text': None,
}
handouts_html = None
offer_data = None
resume_course = {
'has_visited_course': False,
'url': None,
}
welcome_message_html = None
is_enrolled = enrollment and enrollment.is_active
is_staff = bool(has_access(request.user, 'staff', course_key))
show_enrolled = is_enrolled or is_staff
if show_enrolled:
course_blocks = get_course_outline_block_tree(
request, course_key_string, request.user)
date_blocks = get_course_date_blocks(course,
request.user,
request,
num_assignments=1)
dates_widget['course_date_blocks'] = [
block for block in date_blocks
if not isinstance(block, TodaysDate)
]
handouts_html = get_course_info_section(request, request.user,
course, 'handouts')
welcome_message_html = get_current_update_for_user(request, course)
offer_data = generate_offer_data(request.user, course_overview)
access_expiration = get_access_expiration_data(
request.user, course_overview)
cert_data = get_cert_data(request.user, course,
enrollment.mode) if is_enrolled else None
# Only show the set course goal message for enrolled, unverified
# users in a course that allows for verified statuses.
is_already_verified = CourseEnrollment.is_enrolled_as_verified(
request.user, course_key)
if not is_already_verified and has_course_goal_permission(
request, course_key_string, {'is_enrolled': is_enrolled}):
course_goals = {
'goal_options':
valid_course_goals_ordered(include_unsure=True),
'selected_goal': None
}
selected_goal = get_course_goal(request.user, course_key)
if selected_goal:
course_goals['selected_goal'] = {
'key': selected_goal.goal_key,
'text': get_course_goal_text(selected_goal.goal_key),
}
try:
resume_block = get_key_to_last_completed_block(
request.user, course.id)
resume_course['has_visited_course'] = True
resume_path = reverse('jump_to',
kwargs={
'course_id': course_key_string,
'location': str(resume_block)
})
resume_course['url'] = request.build_absolute_uri(resume_path)
except UnavailableCompletionData:
start_block = get_start_block(course_blocks)
resume_course['url'] = start_block['lms_web_url']
elif allow_public_outline or allow_public or user_is_masquerading:
course_blocks = get_course_outline_block_tree(
request, course_key_string, None)
if allow_public or user_is_masquerading:
handouts_html = get_course_info_section(
request, request.user, course, 'handouts')
if not show_enrolled:
if CourseMode.is_masters_only(course_key):
enroll_alert['can_enroll'] = False
enroll_alert['extra_text'] = _(
'Please contact your degree administrator or '
'edX Support if you have questions.')
elif course.invitation_only:
enroll_alert['can_enroll'] = False
# Sometimes there are sequences returned by Course Blocks that we
# don't actually want to show to the user, such as when a sequence is
# composed entirely of units that the user can't access. The Learning
# Sequences API knows how to roll this up, so we use it determine which
# sequences we should remove from course_blocks.
#
# The long term goal is to remove the Course Blocks API call entirely,
# so this is a tiny first step in that migration.
if course_blocks and learning_sequences_api_available(
course_key, request.user):
user_course_outline = get_user_course_outline(
course_key, request.user, datetime.now(tz=timezone.utc))
available_seq_ids = {
str(usage_key)
for usage_key in user_course_outline.sequences
}
# course_blocks is a reference to the root of the course, so we go
# through the chapters (sections) to look for sequences to remove.
for chapter_data in course_blocks['children']:
chapter_data['children'] = [
seq_data for seq_data in chapter_data['children'] if
(seq_data['id'] in available_seq_ids or
# Edge case: Sometimes we have weird course structures.
# We expect only sequentials here, but if there is
# another type, just skip it (don't filter it out).
seq_data['type'] != 'sequential')
] if 'children' in chapter_data else []
data = {
'access_expiration': access_expiration,
'cert_data': cert_data,
'course_blocks': course_blocks,
'course_goals': course_goals,
'course_tools': course_tools,
'dates_widget': dates_widget,
'enroll_alert': enroll_alert,
'handouts_html': handouts_html,
'has_ended': course.has_ended(),
'offer': offer_data,
'resume_course': resume_course,
'welcome_message_html': welcome_message_html,
}
context = self.get_serializer_context()
context['course_overview'] = course_overview
context['enable_links'] = show_enrolled or allow_public
context['enrollment'] = enrollment
serializer = self.get_serializer_class()(data, context=context)
return Response(serializer.data)