from django.contrib.syndication.views import Feed from django.utils.feedgenerator import Rss201rev2Feed from conservancy.apps.news.models import PressRelease from conservancy.apps.blog.models import Entry as BlogEntry from django.shortcuts import render from django.conf import settings from datetime import datetime import itertools import operator from functools import reduce class ConservancyFeedBase(Feed): def copyright_holder(self): return "Software Freedom Conservancy" def license_no_html(self): return "Licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License." def item_copyright(self, item): year = 2008 for attr in ('pub_date', 'date_created', 'date_last_modified'): if hasattr(item, attr): if hasattr(getattr(item, attr), 'year'): year = getattr(getattr(item, attr), 'year') break return 'Copyright (C) %d, %s. %s' % (year, self.copyright_holder(), self.license_no_html()) def item_extra_kwargs(self, item): year = 2008 for attr in ('pub_date', 'date_created', 'date_last_modified'): if hasattr(item, attr): if hasattr(getattr(item, attr), 'year'): year = getattr(getattr(item, attr), 'year') break return { 'year' : year } class PressReleaseFeed(Feed): get_absolute_url = '/feeds/news/' title = "Software Freedom Conservancy News" link = "/news/" description = "" def items(self): return PressRelease.objects.filter(pub_date__lte=datetime.now(), sites__id__exact=settings.SITE_ID).order_by('-pub_date')[:10] def item_title(self, item): return item.headline def item_description(self, item): return item.summary def item_pubdate(self, item): return item.pub_date class OmnibusFeedType(Rss201rev2Feed): def root_attributes(self): attrs = super(OmnibusFeedType, self).root_attributes() attrs['xmlns:itunes'] = 'http://www.itunes.com/dtds/podcast-1.0.dtd' attrs['xmlns:atom'] = 'http://www.w3.org/2005/Atom' attrs['xmlns:media'] = 'http://search.yahoo.com/mrss/' attrs['xmlns:dc'] = "http://purl.org/dc/elements/1.1/" return attrs def add_root_elements(self, handler): super(OmnibusFeedType, self).add_root_elements(handler) def add_item_elements(self, handler, item): super(OmnibusFeedType, self).add_item_elements(handler, item) # Block things that don't have an enclosure from iTunes in # case someone uploads this feed there. handler.addQuickElement("itunes:block", 'Yes') class OmnibusFeed(ConservancyFeedBase): get_absolute_url = '/feeds/omnibus/' feed_type = OmnibusFeedType link ="/news/" title = "The Software Freedom Conservancy" description = "An aggregated feed of all RSS content available from the Software Freedom Conservancy, including both news items and blogs." title_template = "feeds/omnibus_title.html" description_template = "feeds/omnibus_description.html" author_email = "info@sfconservancy.org" author_link = "https://sfconservancy.org/" author_name = "Software Freedom Conservancy" def item_title(self, item): return item.headline def item_description(self, item): return item.summary def item_enclosure_mime_type(self): return "audio/mpeg" def item_enclosure_url(self, item): if hasattr(item, 'mp3_path'): return "https://sfconservancy.org" + item.mp3_path def item_enclosure_length(self, item): if hasattr(item, 'mp3_path'): return item.mp3_length def item_pubdate(self, item): return item.pub_date def item_author_name(self, item): if item.omnibus_type == "blog": return item.author.formal_name else: return "Software Freedom Conservancy" def item_author_link(self, obj): return "https://sfconservancy.org" def item_author_email(self, item): if item.omnibus_type == "news": return "info@sfconservancy.org" elif hasattr(item, 'author'): return "%s@sfconservancy.org" % item.author else: return "info@sfconservancy.org" def item_pubdate(self, item): if item.omnibus_type == "event": return item.date_created else: return item.pub_date def item_link(self, item): return item.get_absolute_url() # http://groups.google.ca/group/django-users/browse_thread/thread/d22e8a8f378cf0e2 def items(self): blogs = BlogEntry.objects.filter(pub_date__lte=datetime.now()).order_by('-pub_date')[:25] for bb in blogs: bb.omnibus_type = "blog" bb.omnibus_feed_description_template = "feeds/blog_description.html" bb.omnibus_feed_title_template = "feeds/blog_title.html" news = PressRelease.objects.filter(pub_date__lte=datetime.now(), sites__id__exact=settings.SITE_ID).order_by('-pub_date')[:25] for nn in news: nn.omnibus_type = "news" nn.omnibus_feed_description_template = "feeds/news_description.html" nn.omnibus_feed_title_template = "feeds/news_title.html" a = [ ii for ii in itertools.chain(blogs, news)] a.sort(key=operator.attrgetter('pub_date'), reverse=True) return a def item_extra_kwargs(self, item): return super(OmnibusFeed, self).item_extra_kwargs(item) class BlogFeed(ConservancyFeedBase): link = "/blog/" get_absolute_url = '/feeds/blog/' def get_object(self, request): return request def title(self, obj): answer = "The Software Freedom Conservancy Blog" GET = obj.GET tags = [] if 'author' in GET: tags = GET.getlist('author') if 'tag' in GET: tags += GET.getlist('tag') if len(tags) == 1: answer += " (" + tags[0] + ")" elif len(tags) > 1: firstTime = True done = {} for tag in tags: if tag in done: continue if firstTime: answer += " (" firstTime = False else: answer += ", " answer += tag done[tag] = tag answer += ")" else: answer += "." return answer def description(self, obj): answer = "Blogs at the Software Freedom Conservancy" GET = obj.GET tags = [] if 'author' in GET: tags = GET.getlist('author') if 'tag' in GET: tags += GET.getlist('tag') done = {} if len(tags) == 1: answer += " tagged with " + tags[0] elif len(tags) > 1: firstTime = True for tag in tags: if tag in done: continue if firstTime: answer += " tagged with " firstTime = False else: answer += " or " answer += tag done[tag] = tag else: answer = "All blogs at the Software Freedom Conservancy" answer += "." return answer def item_title(self, item): return item.headline def item_description(self, item): return item.summary def item_author_name(self, item): return item.author.formal_name def item_author_email(self, item): return "%s@sfconservancy.org" % item.author def item_pubdate(self, item): return item.pub_date def items(self, obj): GET = obj.GET def OR_filter(field_name, subfield_name, objs): from django.db.models import Q return reduce(lambda x, y: x | y, [Q(**{'%s__%s' % (field_name, subfield_name): x}) for x in objs]) queryset = BlogEntry.objects.filter(pub_date__lte=datetime.now()) if 'author' in GET: authors = GET.getlist('author') queryset = queryset.filter(OR_filter('author', 'username', authors)) if 'tag' in GET: tags = GET.getlist('tag') queryset = queryset.filter(OR_filter('tags', 'slug', tags)) return queryset.order_by('-pub_date')[:10] def view(request): """Listing of all available feeds """ feeds = (PressReleaseFeed, BlogFeed, OmnibusFeed) return render(request, "feeds.html", {'feeds': feeds})