def _get_children(course_id, children, category, now):
result = []
items = [get_item(course_id, category, item_id)
for item_id in _get_item_id_list(children, category)]
items = filter(lambda x: x and x.start < now, items)
for item in items:
data = {
"display_name": item.display_name,
"location": str(item.location),
"start": item.start,
"children": item.children,
}
result.append(data)
return result
def get(self, request, course_name, format=None):
""" Get course navigational elements """
course = get_course(course_name)
now = datetime.now(UTC())
# try:
# courses = CourseEnrollment.objects.get(
# user=request.user, course_id=course_name, is_active=True)
# except:
# return Response(status=status.HTTP_404_NOT_FOUND)
is_enrolled = CourseEnrollment.is_enrolled(request.user, course_name)
if not is_enrolled:
return Response(status=status.HTTP_404_NOT_FOUND)
result = {
"success": True,
"course": {
"display_name": course.display_name,
"location": str(course.location),
"start": course.start,
"children": _get_children(course_name, course.children, 'chapter', now),
}
}
chapters = result['course']['children']
for chapter in chapters:
sequentials = chapter['children'] = _get_children(
course_name, chapter['children'], 'sequential', now)
for sequential in sequentials:
verticals = sequential['children'] = _get_children(
course_name, sequential['children'], 'vertical', now)
for vertical in verticals:
children = [get_item(course_name, 'video', item_id) for item_id in _get_item_id_list(
vertical['children'], 'video')]
children = filter(lambda x: x and x.start < now, children)
vertical['children'] = []
course_key = SlashSeparatedCourseKey.from_string(course_name)
for video in children:
data = {
'display_name': video.display_name,
'location': str(video.location),
'start': video.start,
'track_zh': get_track_zh(video, course_key),
'track_en': get_track_en(video, course_key),
'source': get_video_source(video),
}
try:
ccsource = video.ccsource.strip()
data['length'] = VideoInfo.objects.get(
vid=ccsource).duration
except:
data['length'] = 0
vertical['children'].append(data)
return Response(result)
