def topic_index():
topics = Tag.query.all()
tags = []
for topic in topics:
if current_user.is_following_tag(topic):
tags.append(topic)
return render_template('topic_index.html', tags=tags)
def unfollow_tag(id):
topic = Tag.query.filter_by(id=id).first()
if topic is None:
flash('Invalid topic.')
return redirect(url_for('main.index'))
if not current_user.is_following_tag(topic):
flash('你还没有关注该话题。')
return redirect(url_for('main.topic', id=id))
topic.followed_at = ''
db.session.add(topic)
db.session.commit()
current_user.unfollow_tag(topic)
flash('你取消了对话题： %s 的关注。' % topic.title)
return redirect(url_for('main.topic', id=id))
def follow_tag(id):
topic = Tag.query.filter_by(id=id).first()
if topic is None:
flash('Invalid topic.')
return redirect(url_for('main.index'))
if current_user.is_following_tag(topic):
flash('你已经关注了该话题。')
return redirect(url_for('main.topic', id=id))
topic.followed_at = datetime.datetime.now()
db.session.add(topic)
db.session.commit()
current_user.follow_tag(topic)
flash('你关注了话题： %s。' % topic.title)
return redirect(url_for('main.topic', id=id))
