def get_object(self):
try:
video = (Video.objects.select_related('teamvideo').get(
video_id=self.kwargs['video_id']))
except Video.DoesNotExist:
if self.request.user.is_staff:
raise http.Http404
else:
raise PermissionDenied()
workflow = video.get_workflow()
if not workflow.user_can_view_video(self.request.user):
raise PermissionDenied()
SubtitleLanguage.bulk_has_public_version(
video.all_subtitle_languages())
return video
def to_representation(self, qs):
# Do some optimizations to reduce the number of queries before passing
# the result to the default to_representation() method
# Note: we have to use prefetch_related the teamvideo attributes,
# otherwise it will filter out non-team videos. I think this is a
# django 1.4 bug.
qs = (qs.select_related('teamvideo').prefetch_related(
'teamvideo__team', 'teamvideo__project', 'newsubtitlelanguage_set',
'videourl_set'))
# run bulk_has_public_version(), otherwise we have a query for each
# language of each video
videos = list(qs)
all_languages = []
for v in videos:
all_languages.extend(v.all_subtitle_languages())
SubtitleLanguage.bulk_has_public_version(all_languages)
return super(VideoListSerializer, self).to_representation(videos)