NDOJ/judge/feed.py

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2020-01-21 06:35:58 +00:00
from django.conf import settings
from django.contrib.auth.models import AnonymousUser
from django.contrib.syndication.views import Feed
from django.core.cache import cache
from django.utils import timezone
from django.utils.feedgenerator import Atom1Feed
from judge.jinja2.markdown import markdown
from judge.models import BlogPost, Comment, Problem
class ProblemFeed(Feed):
title = 'Recently Added %s Problems' % settings.SITE_NAME
link = '/'
description = 'The latest problems added on the %s website' % settings.SITE_LONG_NAME
def items(self):
return Problem.objects.filter(is_public=True, is_organization_private=False).order_by('-date', '-id')[:25]
def item_title(self, problem):
return problem.name
def item_description(self, problem):
key = 'problem_feed:%d' % problem.id
desc = cache.get(key)
if desc is None:
desc = str(markdown(problem.description, 'problem'))[:500] + '...'
cache.set(key, desc, 86400)
return desc
def item_pubdate(self, problem):
return problem.date
item_updateddate = item_pubdate
class AtomProblemFeed(ProblemFeed):
feed_type = Atom1Feed
subtitle = ProblemFeed.description
class CommentFeed(Feed):
title = 'Latest %s Comments' % settings.SITE_NAME
link = '/'
description = 'The latest comments on the %s website' % settings.SITE_LONG_NAME
def items(self):
return Comment.most_recent(AnonymousUser(), 25)
def item_title(self, comment):
return '%s -> %s' % (comment.author.user.username, comment.page_title)
def item_description(self, comment):
key = 'comment_feed:%d' % comment.id
desc = cache.get(key)
if desc is None:
desc = str(markdown(comment.body, 'comment'))
cache.set(key, desc, 86400)
return desc
def item_pubdate(self, comment):
return comment.time
item_updateddate = item_pubdate
class AtomCommentFeed(CommentFeed):
feed_type = Atom1Feed
subtitle = CommentFeed.description
class BlogFeed(Feed):
title = 'Latest %s Blog Posts' % settings.SITE_NAME
link = '/'
description = 'The latest blog posts from the %s' % settings.SITE_LONG_NAME
def items(self):
return BlogPost.objects.filter(visible=True, publish_on__lte=timezone.now()).order_by('-sticky', '-publish_on')
def item_title(self, post):
return post.title
def item_description(self, post):
key = 'blog_feed:%d' % post.id
summary = cache.get(key)
if summary is None:
summary = str(markdown(post.summary or post.content, 'blog'))
cache.set(key, summary, 86400)
return summary
def item_pubdate(self, post):
return post.publish_on
item_updateddate = item_pubdate
class AtomBlogFeed(BlogFeed):
feed_type = Atom1Feed
subtitle = BlogFeed.description