def post(self, topic_id):
username = self.current_user
s = yield gen.maybe_future(
Subscription.get_by_user_topic(username, topic_id))
if s:
raise exceptions.TopicAlreadySubscribed()
else:
yield gen.maybe_future(Subscription.create(username, topic_id))
def delete(self, topic_id):
username = self.current_user
s = yield gen.maybe_future(
Subscription.get_by_user_topic(username, topic_id))
if s:
yield gen.maybe_future(s.delete())
else:
raise exceptions.TopicHasNotBeenSubscribed()
def _topic_info(username, topic):
is_subed = False
if username is not None:
exists = Subscription.get_by_user_topic(username, topic.id)
if exists:
is_subed = True
info = topic.to_dict()
info.update({'is_subscribed': is_subed})
return info
def get(self, topic_id):
topic = yield gen.maybe_future(Topic.get(topic_id))
if not topic:
raise HTTPError(404)
admin = yield gen.maybe_future(User.get(topic.admin_id))
is_subscribed = False
if self.current_user:
is_subscribed = yield gen.maybe_future(
Subscription.get_by_user_topic(self.current_user, topic.id))
self.render(
'topic.html',
title=topic.name,
keywords=topic.name + ', 2L',
description=topic.description,
topic_id=topic_id,
admin=admin.username,
avatar=topic.avatar,
rules=topic.rules,
is_subscribed=int(bool(is_subscribed)),
)
