def get_non_courseware_topics(request, course_key, course, topic_ids):
"""
Returns a list of topic trees that are not linked to courseware.
Parameters:
request: The django request objects used for build_absolute_uri.
course_key: The key of the course to get discussion threads for.
course: The course for which topics are requested.
topic_ids: A list of topic IDs for which details are requested.
This is optional. If None then all course topics are returned.
Returns:
A list of non-courseware topics and a set of existing topics among
topic_ids.
"""
non_courseware_topics = []
existing_topic_ids = set()
for name, entry in sorted(
course.discussion_topics.items(),
key=lambda item: item[1].get("sort_key", item[0])):
if not topic_ids or entry['id'] in topic_ids:
discussion_topic = DiscussionTopic(
entry["id"], name,
get_thread_list_url(request, course_key, [entry["id"]]))
non_courseware_topics.append(
DiscussionTopicSerializer(discussion_topic).data)
if topic_ids and entry["id"] in topic_ids:
existing_topic_ids.add(entry["id"])
return non_courseware_topics, existing_topic_ids
def get_courseware_topics(request, course_key, course, topic_ids):
"""
Returns a list of topic trees for courseware-linked topics.
Parameters:
request: The django request objects used for build_absolute_uri.
course_key: The key of the course to get discussion threads for.
course: The course for which topics are requested.
topic_ids: A list of topic IDs for which details are requested.
This is optional. If None then all course topics are returned.
Returns:
A list of courseware topics and a set of existing topics among
topic_ids.
"""
courseware_topics = []
existing_topic_ids = set()
def get_xblock_sort_key(xblock):
"""
Get the sort key for the xblock (falling back to the discussion_target
setting if absent)
"""
return xblock.sort_key or xblock.discussion_target
def get_sorted_xblocks(category):
"""Returns key sorted xblocks by category"""
return sorted(xblocks_by_category[category], key=get_xblock_sort_key)
discussion_xblocks = get_accessible_discussion_xblocks(course, request.user)
xblocks_by_category = defaultdict(list)
for xblock in discussion_xblocks:
xblocks_by_category[xblock.discussion_category].append(xblock)
for category in sorted(xblocks_by_category.keys()):
children = []
for xblock in get_sorted_xblocks(category):
if not topic_ids or xblock.discussion_id in topic_ids:
discussion_topic = DiscussionTopic(
xblock.discussion_id,
xblock.discussion_target,
get_thread_list_url(request, course_key, [xblock.discussion_id]),
)
children.append(discussion_topic)
if topic_ids and xblock.discussion_id in topic_ids:
existing_topic_ids.add(xblock.discussion_id)
if not topic_ids or children:
discussion_topic = DiscussionTopic(
None,
category,
get_thread_list_url(request, course_key, [item.discussion_id for item in get_sorted_xblocks(category)]),
children,
)
courseware_topics.append(DiscussionTopicSerializer(discussion_topic).data)
return courseware_topics, existing_topic_ids
