def topic_context(topic):
"""
Given a topic node, create all context related to showing that topic
in a template.
"""
videos = topic_tools.get_videos(topic)
exercises = topic_tools.get_exercises(topic)
topics = topic_tools.get_live_topics(topic)
# Get video counts if they'll be used, on-demand only.
#
# Check in this order so that the initial counts are always updated
if video_counts_need_update() or not 'nvideos_local' in topic:
(topic,_,_) = get_video_counts(topic=topic, videos_path=settings.CONTENT_ROOT)
my_topics = [dict((k, t[k]) for k in ('title', 'path', 'nvideos_local', 'nvideos_known')) for t in topics]
context = {
"topic": topic,
"title": topic["title"],
"description": re.sub(r'<[^>]*?>', '', topic["description"] or ""),
"videos": videos,
"exercises": exercises,
"topics": my_topics,
"backup_vids_available": bool(settings.BACKUP_VIDEO_SOURCE),
}
return context
def recount_videos_and_invalidate_parents(node, force=False):
"""
Call get_video_counts (if necessary); if a change has been detected,
then check parents to see if their counts should be invalidated.
"""
do_it = force
do_it = do_it or "nvideos_local" not in node
do_it = do_it or any(["nvideos_local" not in child for child in node.get("children", [])])
if do_it:
logging.debug("Adding video counts to topic (and all descendants) %s" % node["path"])
changed = get_video_counts(topic=node, force=force)
if changed and node.get("parent") and "nvideos_local" in node["parent"]:
strip_counts_from_ancestors(node)
return node
import json
import os
import settings
from shared import topic_tools
from shared.videos import get_video_urls, get_video_counts
TOPICS = topic_tools.get_topic_tree()
NODE_CACHE = topic_tools.get_node_cache()
ID2SLUG_MAP = topic_tools.get_id2slug_map()
# Add initial video counts
get_video_counts(topic=TOPICS, videos_path=settings.CONTENT_ROOT)
# Compute video URLs. Must use videos from topics, as the NODE_CACHE doesn't contain all video objects. :-/
for video in topic_tools.get_topic_videos(path="/"):
video["available"] = video["on_disk"] or bool(settings.BACKUP_VIDEO_SOURCE)
(video["stream_url"], video["thumbnail_url"], video["subtitles_url"]) = get_video_urls(video["youtube_id"], "mp4", video["on_disk"])
