def feed(tag_name, _user):
"""
Display recent public posts on a particular topic (Tag).
"""
from pyaspora.post.models import Post, Share
from pyaspora.post.views import json_posts
tag = Tag.get_by_name(tag_name, create=False)
if not tag:
abort(404, 'No such tag')
data = json_tag(tag)
posts = db.session.query(Post). \
join(PostTag). \
join(Tag). \
join(Share). \
filter(Tag.Queries.public_posts_for_tags([tag.id])). \
order_by(desc(Post.thread_modified_at)). \
group_by(Post.id). \
limit(100)
data['feed'] = json_posts([(p, None) for p in posts])
add_logged_in_user_to_data(data, _user)
return render_response('tags_feed.tpl', data)
