[project @ bkuhn@ebb.org-20081117203130-hiystvmr6i0lhx90]
Released feeds code as currently running on SFLC site.
This commit is contained in:
Bradley M. Kuhn
parent
956d39e3f6
commit
61a40d7119
1 changed files with 528 additions and 0 deletions
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feeds.py
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feeds.py
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# Copyright (C) 2008 Bradley M. Kuhn <bkuhn@ebb.org>
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# Copyright (C) 2006, 2007 Software Freedom Law Center, Inc.
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#
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# This software's license gives you freedom; you can copy, convey,
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# propogate, redistribute and/or modify this program under the terms of
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# the GNU Affero General Public License (AGPL) as published by the Free
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# Software Foundation (FSF), either version 3 of the License, or (at your
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# option) any later version of the AGPL published by the FSF.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero
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# General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program in a file in the toplevel directory called
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# "AGPLv3". If not, see <http://www.gnu.org/licenses/>.
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#
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# FIXME: There are lot of SFLC hard-codes in this file.
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from django.contrib.syndication.feeds import Feed
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from django.utils.feedgenerator import Rss201rev2Feed
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from sflc.apps.blog.models import Entry as BlogEntry
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from sflc.apps.blog.models import EntryTag as BlogEntryTag
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from sflc.apps.staff.models import Person
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from sflc.apps.news.models import PressRelease
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from sflc.apps.podcast.models import Podcast
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from sflc.apps.events.models import Event, EventMedia
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from sflc.apps.events.view_helpers import organize_media_by_event
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from django.shortcuts import render_to_response
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from django.conf import settings
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from datetime import datetime
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import itertools
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import operator
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class SFLCFeedBase(Feed):
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def copyright_holder(self): return "Software Freedom Law Center"
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def license_no_html(self): return "Licensed under a Creative Commons Attribution-No Derivative Works 3.0 United States License."
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def item_copyright(self, item):
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year = 2008
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for attr in ('pub_date', 'date_created', 'date_last_modified'):
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if hasattr(item, attr):
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if hasattr(getattr(item, attr), 'year'):
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year = getattr(getattr(item, attr), 'year')
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break
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return 'Copyright (C) %d, %s. %s' % (year, self.copyright_holder(), self.license_no_html())
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def item_extra_kwargs(self, item):
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year = 2008
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for attr in ('pub_date', 'date_created', 'date_last_modified'):
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if hasattr(item, attr):
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if hasattr(getattr(item, attr), 'year'):
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year = getattr(getattr(item, attr), 'year')
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break
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return { 'year' : year }
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def for_podcast_feed_extra_kwargs(self, obj):
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return { 'managingEditorNames' : 'Bradley and Karen',
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'rssImage' : { 'url' : 'http://www.softwarefreedom.org/img/podcast/sflc-key-200x200.jpg',
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'width' : '200', 'height' : '200' },
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'webMaster' : 'press@softwarefreedom.org',
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'dcCreator' : 'podcast@softwarefreedom.org (Bradley and Karen)',
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'iTunesExplicit' : 'No',
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'iTunesBlock' : 'No',
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'iTunesImage' : { 'url' : 'http://www.softwarefreedom.org/img/podcast/sflc-key-blue-background-with-text_300x300.jpg',
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'title' : 'Software Freedom Law Center',
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'link' : self.author_link,
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'type' : 'video/jpg'},
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'category' : { 'name' : 'Technology', 'scheme' : 'http://www.itunes.com/dtds/podcast-1.0.dtd',
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'subcats' : [ 'Computers', 'Information Technology', 'Operating Systems' ] },
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'keywords' : 'open source opensource freesoftware software freedom legal law linux free license gpl lgpl agpl bsd',
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'iTunesAuthor' : 'Software Freedom Law Center',
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'iTunesSubtitle' : 'Bi-Weekly Discussion of Legal Issues in the Free, Libre, and Open Source Software (FLOSS) World',
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'copyrightHolder' : self.copyright_holder(),
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'copyrightLicense' : self.license_no_html() }
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def for_podcast_item_extra_kwargs(self, item):
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return { 'duration' : item.duration,
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'year' : item.date_created.year,
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'dcCreator' : 'podcast@softwarefreedom.org (Bradley and Karen)',
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'intheitembkuhn' : item.__dict__.__str__()}
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def podcast_helper_add_root_elements(self, handler):
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handler.addQuickElement('managingEditor', self.feed['author_email']
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+ ' (' + self.feed['managingEditorNames'] + ')')
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handler.startElement('image', {})
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handler.addQuickElement('url', self.feed['rssImage']['url'])
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handler.addQuickElement('title', self.feed['author_name'])
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handler.addQuickElement('link', self.feed['link'])
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handler.addQuickElement('width', self.feed['rssImage']['width'])
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handler.addQuickElement('height', self.feed['rssImage']['height'])
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handler.endElement('image')
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handler.addQuickElement('webMaster', self.feed['webMaster'])
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handler.addQuickElement('dc:creator', self.feed['dcCreator'])
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handler.addQuickElement('itunes:explicit', self.feed['iTunesExplicit'])
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handler.addQuickElement('itunes:block', self.feed['iTunesBlock'])
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handler.addQuickElement('generator', 'http://www.softwarefreedom.org/code')
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handler.addQuickElement('media:thumbnail', '' , { 'url' : self.feed['rssImage']['url'] })
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handler.startElement('itunes:image', {})
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handler.addQuickElement('url', self.feed['iTunesImage']['url'])
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handler.addQuickElement('title', self.feed['iTunesImage']['title'])
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handler.addQuickElement('link', self.feed['iTunesImage']['link'])
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handler.endElement('itunes:image')
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handler.addQuickElement('itunes:link', '', { 'href' : self.feed['iTunesImage']['url'],
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'type' : self.feed['iTunesImage']['type']})
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handler.addQuickElement(u"media:category", self.feed['category']['name'],
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{ 'scheme': self.feed['category']['scheme']})
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if not (self.feed['category']['subcats'] and len(self.feed['category']['subcats']) > 0):
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handler.addQuickElement(u"itunes:category", '', { 'text': self.feed['category']['name']})
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else:
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handler.startElement(u"itunes:category", { 'text': self.feed['category']['name']})
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for cc in self.feed['category']['subcats']:
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handler.addQuickElement(u"itunes:category", '', { 'text': cc })
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handler.endElement(u"itunes:category")
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handler.addQuickElement(u"media:keywords", self.feed['keywords'].replace(" ", ","))
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handler.startElement(u"itunes:owner", {})
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handler.addQuickElement(u"itunes:email", self.feed['author_email'])
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handler.addQuickElement(u"itunes:name", self.feed['author_name'])
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handler.endElement(u"itunes:owner")
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handler.addQuickElement(u"itunes:summary", self.feed['description'])
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handler.addQuickElement(u"itunes:subtitle", self.feed['iTunesSubtitle'])
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handler.addQuickElement(u"itunes:author", self.feed['iTunesAuthor'])
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handler.addQuickElement(u'atom:link', '', { 'rel' : "self", 'href' : self.feed['feed_url'],
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'type' : "application/rss+xml"})
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years = {}
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for ii in self.items: years[ii['year']] = 1
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copyrightString = ""
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ll = years.keys()
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ll.sort()
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for yy in ll: copyrightString += "%d, " % yy
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copyrightString += "%s. %s" % (self.feed['copyrightHolder'], self.feed['copyrightLicense'])
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handler.addQuickElement('copyright', copyrightString)
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handler.addQuickElement('media:copyright', "Copyright (C) " + copyrightString)
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def podcast_helper_add_item_elements(self, handler, item):
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handler.addQuickElement("itunes:explicit", self.feed['iTunesExplicit'])
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handler.addQuickElement("itunes:block", self.feed['iTunesBlock'])
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handler.addQuickElement(u"itunes:keywords", self.feed['keywords'])
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handler.addQuickElement('dc:creator', self.feed['dcCreator'])
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handler.addQuickElement("itunes:author", item['author_name'])
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handler.addQuickElement("itunes:duration", item['duration'])
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handler.addQuickElement('media:content', '', { 'url' : item['enclosure'].url,
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'fileSize' : item['enclosure'].length,
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'type' : item['enclosure'].mime_type})
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class OmnibusFeedType(Rss201rev2Feed):
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def root_attributes(self):
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attrs = super(OmnibusFeedType, self).root_attributes()
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attrs['xmlns:itunes'] = 'http://www.itunes.com/dtds/podcast-1.0.dtd'
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attrs['xmlns:atom'] = 'http://www.w3.org/2005/Atom'
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attrs['xmlns:media'] = 'http://search.yahoo.com/mrss/'
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attrs['xmlns:dc'] = "http://purl.org/dc/elements/1.1/"
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return attrs
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def add_root_elements(self, handler):
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super(OmnibusFeedType, self).add_root_elements(handler)
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podcast_helper_add_root_elements(self, handler)
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def add_item_elements(self, handler, item):
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super(OmnibusFeedType, self).add_item_elements(handler, item)
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# The below is a bit of a cheat, I assume anything in the ominbus
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# feed that has an enclosure must be a podcast. Probably not true
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# as such in the general case, but enough for this case, I think.
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if item['enclosure']:
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podcast_helper_add_item_elements(self, handler, item)
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else:
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# Block things that don't have an enclosure from iTunes in
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# case someone uploads this feed there.
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handler.addQuickElement("itunes:block", 'Yes')
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class OmnibusFeed(SFLCFeedBase):
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feed_type = OmnibusFeedType
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link ="/omnibus/"
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title = "The Software Freedom Law Center"
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description = "An aggregated feed of all RSS content available from the Software Freedom Law Center, including news items, blogs, podcasts, and future events."
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title_template = "feeds/omnibus_title.html"
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description_template = "feeds/omnibus_description.html"
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author_email = "info@softwarefreedom.org"
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author_link = "http://www.softwarefreedom.org/"
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author_name = "Software Freedom Law Center"
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def item_enclosure_mime_type(self): return "audio/mpeg"
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def item_enclosure_url(self, item):
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if hasattr(item, 'mp3_path'):
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return "http://www.softwarefreedom.org" + item.mp3_path
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def item_enclosure_length(self, item):
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if hasattr(item, 'mp3_path'):
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return item.mp3_length
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def item_pubdate(self, item):
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return item.pub_date
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def item_author_name(self, item):
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if item.omnibus_type == "blog":
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return item.author.formal_name
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elif item.omnibus_type == "podcast":
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return "Software Freedom Law Show"
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else:
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return "Software Freedom Law Center"
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def item_author_link(self, obj):
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return "http://www.softwarefreedom.org"
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def item_author_email(self, item):
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if item.omnibus_type == "news":
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return "press@softwarefreedom.org"
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elif item.omnibus_type == "podcast":
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return "podcast@softwarefreedom.org"
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elif hasattr(item, 'author'):
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return "%s@softwarefreedom.org" % item.author
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else:
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return "info@softwarefreedom.org"
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def item_pubdate(self, item):
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if item.omnibus_type == "event":
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return item.date_created
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else:
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return item.pub_date
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def item_link(self, item):
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return item.get_absolute_url()
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# http://groups.google.ca/group/django-users/browse_thread/thread/d22e8a8f378cf0e2
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def items(self):
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blogs = BlogEntry.objects.filter(pub_date__lte=datetime.now()).order_by('-pub_date')[:25]
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for bb in blogs:
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bb.omnibus_type = "blog"
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bb.omnibus_feed_description_template = "feeds/blog_description.html"
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bb.omnibus_feed_title_template = "feeds/blog_title.html"
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news = PressRelease.objects.filter(pub_date__lte=datetime.now(),
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sites__id__exact=settings.SITE_ID).order_by('-pub_date')[:25]
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for nn in news:
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nn.omnibus_type = "news"
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nn.omnibus_feed_description_template = "feeds/news_description.html"
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nn.omnibus_feed_title_template = "feeds/news_title.html"
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events = Event.future.order_by('-date_created')[:25]
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for ee in events:
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ee.omnibus_type = "event"
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ee.omnibus_feed_description_template = "feeds/future-events_description.html"
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ee.omnibus_feed_title_template = "feeds/future-events_title.html"
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# events don't have a pub_date, so change it to date_created
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podcasts = Podcast.objects.filter(pub_date__lte=datetime.now()).order_by('-pub_date')
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for pp in podcasts:
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pp.omnibus_type = "podcast"
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pp.omnibus_feed_description_template = "feeds/podcast_description.html"
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pp.omnibus_feed_title_template = "feeds/podcast_title.html"
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a = [ ii for ii in itertools.chain(blogs, news, events, podcasts)]
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a.sort(key=operator.attrgetter('pub_date'), reverse=True)
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return a
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def feed_extra_kwargs(self, obj):
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# Currently podcast feed is the only one that has a special dict
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# returned here.
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return for_podcast_feed_extra_kwargs(self, obj)
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def item_extra_kwargs(self, item):
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# Currently podcast feed is the only one that has a special dict
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# returned here.
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if item.omnibus_type == 'podcast':
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return for_podcast_item_extra_kwargs(self, item)
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else:
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return super(OmnibusFeed, self).item_extra_kwargs(item)
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class BlogFeed(SFLCFeedBase):
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link = "/blog/"
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def title(self):
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answer = "The Software Freedom Law Center Blog"
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GET = self.request.GET
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tags = []
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if 'author' in GET:
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tags = GET.getlist('author')
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if 'tag' in GET:
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tags += GET.getlist('tag')
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if len(tags) == 1:
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answer += " (" + tags[0] + ")"
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elif len(tags) > 1:
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firstTime = True
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done = {}
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for tag in tags:
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if done.has_key(tag): continue
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if firstTime:
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answer += " ("
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firstTime = False
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else:
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answer += ", "
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answer += tag
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done[tag] = tag
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answer += ")"
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else:
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answer += "."
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return answer
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def description(self):
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answer = "Blogs at the Software Freedom Law Center"
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GET = self.request.GET
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tags = []
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if 'author' in GET: tags = GET.getlist('author')
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if 'tag' in GET: tags += GET.getlist('tag')
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done = {}
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if len(tags) == 1:
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answer += " tagged with " + tags[0]
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elif len(tags) > 1:
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firstTime = True
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for tag in tags:
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if done.has_key(tag): continue
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if firstTime:
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answer += " tagged with "
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firstTime = False
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else:
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answer += " or "
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answer += tag
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done[tag] = tag
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else:
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answer = "All blogs at the Software Freedom Law Center"
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answer += "."
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return answer
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def item_author_name(self, item):
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return item.author.formal_name
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def item_author_email(self, item):
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GET = self.request.GET
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if not 'author' in GET:
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return "%s@softwarefreedom.org" % item.author
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else:
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answer = ""
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authors = GET.getlist('author')
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firstTime = True
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for author in authors:
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if not firstTime:
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answer = "%s@softwarefreedom.org" % author
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firstTime = False
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else:
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answer += ",%s@softwarefreedom.org" % author
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def item_pubdate(self, item):
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return item.pub_date
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def items(self):
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GET = self.request.GET
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def OR_filter(field_name, subfield_name, objs):
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from django.db.models import Q
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return reduce(lambda x, y: x | y,
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[Q(**{'%s__%s' % (field_name, subfield_name): x})
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for x in objs])
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queryset = BlogEntry.objects.filter(pub_date__lte=datetime.now())
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if 'author' in GET:
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authors = GET.getlist('author')
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queryset = queryset.filter(OR_filter('author', 'username', authors))
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if 'tag' in GET:
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tags = GET.getlist('tag')
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queryset = queryset.filter(OR_filter('tags', 'slug', tags))
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return queryset.order_by('-pub_date')[:10]
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class TechBlogFeed(BlogFeed):
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title = "Bradley M. Kuhn's SFLC Blog"
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link = "/blog/?author=bkuhn"
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description = "The Software Freedom Law Center Blog, written by our Policy Analyst and Technology Director, Bradley M. Kuhn."
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def items(self):
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return BlogEntry.objects.filter(author__username__exact="bkuhn", pub_date__lte=datetime.now()).order_by('-pub_date')[:10]
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class PressReleaseFeed(SFLCFeedBase):
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title = "SFLC News Releases"
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link = "/news/"
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description = "News releases from the Software Freedom Law Center."
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def items(self):
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return PressRelease.objects.filter(pub_date__lte=datetime.now(),
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sites__id__exact=settings.SITE_ID).order_by('-pub_date')[:10]
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def item_pubdate(self, item):
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return item.pub_date
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class UpcomingEventFeed(SFLCFeedBase):
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title = "SFLC Upcoming Events"
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link = "/events/"
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description = "Upcoming appearances by the staff of the Software Freedom Law Center and other events related to software freedom where the SFLC will participate."
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def items(self):
|
||||
return Event.future.order_by('-date_created')[:10]
|
||||
|
||||
def item_pubdate(self, item):
|
||||
return item.date_created
|
||||
|
||||
class RecentEventMediaFeed(SFLCFeedBase):
|
||||
title = "SFLC Recent Event Media"
|
||||
link = "/events/"
|
||||
description = "Audio, video and transcripts from SFLC engagements"
|
||||
|
||||
# http://www.feedforall.com/itune-tutorial-tags.htm
|
||||
# http://www.feedforall.com/mediarss.htm
|
||||
class iTunesFeedType(Rss201rev2Feed):
|
||||
def root_attributes(self):
|
||||
attrs = super(iTunesFeedType, 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(iTunesFeedType, self).add_root_elements(handler)
|
||||
podcast_helper_add_root_elements(self, handler)
|
||||
|
||||
def add_item_elements(self, handler, item):
|
||||
super(iTunesFeedType, self).add_item_elements(handler, item)
|
||||
podcast_helper_add_item_elements(self, handler, item)
|
||||
|
||||
|
||||
class PodcastFeed(SFLCFeedBase):
|
||||
feed_type = iTunesFeedType
|
||||
title = "The Software Freedom Law Show"
|
||||
link = "/podcast/"
|
||||
description = "A bi-weekly discussion of legal issues in the FLOSS world, including interviews, from the Software Freedom Law Center offices in New York. Presented by Karen Sandler and Bradley M. Kuhn."
|
||||
author_email = "podcast@softwarefreedom.org"
|
||||
author_link = "http://www.softwarefreedom.org/"
|
||||
author_name = "Software Freedom Law Show"
|
||||
title_template = "feeds/podcast_title.html"
|
||||
description_template = "feeds/podcast_description.html"
|
||||
def items(self):
|
||||
return Podcast.objects.filter(pub_date__lte=datetime.now()).order_by('-pub_date')
|
||||
def item_pubdate(self, item):
|
||||
return item.pub_date
|
||||
|
||||
def item_link(self, item):
|
||||
return item.get_absolute_url()
|
||||
|
||||
def item_author_email(self, obj):
|
||||
return "podcast@softwarefreedom.org"
|
||||
|
||||
def item_author_name(self, obj):
|
||||
return "Software Freedom Law Show"
|
||||
|
||||
def item_author_link(self, obj):
|
||||
return "http://www.softwarefreedom.org"
|
||||
|
||||
def item_categories(self, item):
|
||||
return ('Technology',)
|
||||
|
||||
def copyright_holder(self): return "Software Freedom Law Center"
|
||||
|
||||
def license_no_html(self): return "Licensed under a Creative Commons Attribution-No Derivative Works 3.0 United States License."
|
||||
|
||||
def feed_extra_kwargs(self, obj):
|
||||
return for_podcast_feed_extra_kwargs(self, obj)
|
||||
|
||||
def item_extra_kwargs(self, item):
|
||||
return for_podcast_item_extra_kwargs(self, item)
|
||||
|
||||
# FIXME:
|
||||
# GUEST NAME GOES HERE!!!
|
||||
#<itunes:author>
|
||||
# If applicable, at the item level, this tag can contain information
|
||||
# about the person(s) featured on a specific episode.
|
||||
|
||||
|
||||
class Mp3PodcastFeed(PodcastFeed):
|
||||
def item_enclosure_mime_type(self): return "audio/mpeg"
|
||||
def item_enclosure_url(self, item):
|
||||
return "http://www.softwarefreedom.org" + item.mp3_path
|
||||
def item_enclosure_length(self, item):
|
||||
return item.mp3_length
|
||||
|
||||
class OggPodcastFeed(PodcastFeed):
|
||||
def item_enclosure_mime_type(self): return "audio/ogg"
|
||||
def item_enclosure_url(self, item):
|
||||
return "http://www.softwarefreedom.org" + item.ogg_path
|
||||
def item_enclosure_length(self, item):
|
||||
return item.ogg_length
|
||||
|
||||
feed_dict = {
|
||||
'blog': BlogFeed,
|
||||
'podcast-ogg': OggPodcastFeed,
|
||||
'podcast-mp3': Mp3PodcastFeed,
|
||||
'techblog': TechBlogFeed,
|
||||
'news': PressReleaseFeed,
|
||||
'future-events': UpcomingEventFeed,
|
||||
'omnibus': OmnibusFeed,
|
||||
# 'event-media': RecentEventMediaFeed,
|
||||
}
|
||||
|
||||
# make each feed know its canonical url
|
||||
for k, v in feed_dict.items():
|
||||
v.get_absolute_url = '/feeds/%s/' % k
|
||||
|
||||
def view(request):
|
||||
"""Listing of all available feeds
|
||||
"""
|
||||
|
||||
feeds = feed_dict.values()
|
||||
feeds.remove(TechBlogFeed)
|
||||
return render_to_response("feeds.html", {'feeds': feeds})
|
||||
Loading…
Reference in a new issue