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Fixed #6188, #6304, #6618, #6969, #8758, #8989, #10334, #11069, #11973 and #12403 -- Modified the syndication framework to use class-based views. Thanks to Ben Firshman for his work on this patch. 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12338 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Russell Keith-Magee 2010-01-28 13:46:18 +00:00
parent 3f68d255e2
commit c4c27d8a04
17 changed files with 987 additions and 487 deletions
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1
AUTHORS
View File

@ -166,6 +166,7 @@ answer newbie questions, and generally made Django that much better:
Afonso Fernández Nogueira <fonzzo.django@gmail.com>
J. Pablo Fernandez <pupeno@pupeno.com>
Maciej Fijalkowski
Ben Firshman <ben@firshman.co.uk>
Matthew Flanagan <http://wadofstuff.blogspot.com>
Eric Floehr <eric@intellovations.com>
Eric Florenzano <floguy@gmail.com>

4
django/contrib/comments/feeds.py
View File

@ -1,5 +1,5 @@
from django.conf import settings
from django.contrib.syndication.feeds import Feed
from django.contrib.syndication.views import Feed
from django.contrib.sites.models import Site
from django.contrib import comments
from django.utils.translation import ugettext as _
@ -33,6 +33,6 @@ class LatestCommentFeed(Feed):
params = [settings.COMMENTS_BANNED_USERS_GROUP]
qs = qs.extra(where=where, params=params)
return qs.order_by('-submit_date')[:40]
def item_pubdate(self, item):
return item.submit_date

171
django/contrib/syndication/feeds.py
View File

@ -1,78 +1,22 @@
from datetime import datetime, timedelta
from django.contrib.syndication import views
from django.core.exceptions import ObjectDoesNotExist
import warnings
from django.core.exceptions import ImproperlyConfigured, ObjectDoesNotExist
from django.template import loader, Template, TemplateDoesNotExist
from django.contrib.sites.models import Site, RequestSite
from django.utils import feedgenerator
from django.utils.tzinfo import FixedOffset
from django.utils.encoding import smart_unicode, iri_to_uri
from django.conf import settings
from django.template import RequestContext
def add_domain(domain, url):
if not (url.startswith('http://') or url.startswith('https://')):
# 'url' must already be ASCII and URL-quoted, so no need for encoding
# conversions here.
url = iri_to_uri(u'http://%s%s' % (domain, url))
return url
class FeedDoesNotExist(ObjectDoesNotExist):
pass
class Feed(object):
item_pubdate = None
item_enclosure_url = None
feed_type = feedgenerator.DefaultFeed
feed_url = None
title_template = None
description_template = None
# This is part of the deprecated API
from django.contrib.syndication.views import FeedDoesNotExist, add_domain
class Feed(views.Feed):
"""Provided for backwards compatibility."""
def __init__(self, slug, request):
warnings.warn('The syndication feeds.Feed class is deprecated. Please '
'use the new class based view API.',
category=PendingDeprecationWarning)
self.slug = slug
self.request = request
self.feed_url = self.feed_url or request.path
self.title_template_name = self.title_template or ('feeds/%s_title.html' % slug)
self.description_template_name = self.description_template or ('feeds/%s_description.html' % slug)
def item_link(self, item):
try:
return item.get_absolute_url()
except AttributeError:
raise ImproperlyConfigured("Give your %s class a get_absolute_url() method, or define an item_link() method in your Feed class." % item.__class__.__name__)
def __get_dynamic_attr(self, attname, obj, default=None):
try:
attr = getattr(self, attname)
except AttributeError:
return default
if callable(attr):
# Check func_code.co_argcount rather than try/excepting the
# function and catching the TypeError, because something inside
# the function may raise the TypeError. This technique is more
# accurate.
if hasattr(attr, 'func_code'):
argcount = attr.func_code.co_argcount
else:
argcount = attr.__call__.func_code.co_argcount
if argcount == 2: # one argument is 'self'
return attr(obj)
else:
return attr()
return attr
def feed_extra_kwargs(self, obj):
"""
Returns an extra keyword arguments dictionary that is used when
initializing the feed generator.
"""
return {}
def item_extra_kwargs(self, item):
"""
Returns an extra keyword arguments dictionary that is used with
the `add_item` call of the feed generator.
"""
return {}
self.feed_url = getattr(self, 'feed_url', None) or request.path
self.title_template = self.title_template or ('feeds/%s_title.html' % slug)
self.description_template = self.description_template or ('feeds/%s_description.html' % slug)
def get_object(self, bits):
return None
@ -86,94 +30,9 @@ class Feed(object):
bits = url.split('/')
else:
bits = []
try:
obj = self.get_object(bits)
except ObjectDoesNotExist:
raise FeedDoesNotExist
return super(Feed, self).get_feed(obj, self.request)
if Site._meta.installed:
current_site = Site.objects.get_current()
else:
current_site = RequestSite(self.request)
link = self.__get_dynamic_attr('link', obj)
link = add_domain(current_site.domain, link)
feed = self.feed_type(
title = self.__get_dynamic_attr('title', obj),
subtitle = self.__get_dynamic_attr('subtitle', obj),
link = link,
description = self.__get_dynamic_attr('description', obj),
language = settings.LANGUAGE_CODE.decode(),
feed_url = add_domain(current_site.domain,
self.__get_dynamic_attr('feed_url', obj)),
author_name = self.__get_dynamic_attr('author_name', obj),
author_link = self.__get_dynamic_attr('author_link', obj),
author_email = self.__get_dynamic_attr('author_email', obj),
categories = self.__get_dynamic_attr('categories', obj),
feed_copyright = self.__get_dynamic_attr('feed_copyright', obj),
feed_guid = self.__get_dynamic_attr('feed_guid', obj),
ttl = self.__get_dynamic_attr('ttl', obj),
**self.feed_extra_kwargs(obj)
)
try:
title_tmp = loader.get_template(self.title_template_name)
except TemplateDoesNotExist:
title_tmp = Template('{{ obj }}')
try:
description_tmp = loader.get_template(self.description_template_name)
except TemplateDoesNotExist:
description_tmp = Template('{{ obj }}')
for item in self.__get_dynamic_attr('items', obj):
link = add_domain(current_site.domain, self.__get_dynamic_attr('item_link', item))
enc = None
enc_url = self.__get_dynamic_attr('item_enclosure_url', item)
if enc_url:
enc = feedgenerator.Enclosure(
url = smart_unicode(enc_url),
length = smart_unicode(self.__get_dynamic_attr('item_enclosure_length', item)),
mime_type = smart_unicode(self.__get_dynamic_attr('item_enclosure_mime_type', item))
)
author_name = self.__get_dynamic_attr('item_author_name', item)
if author_name is not None:
author_email = self.__get_dynamic_attr('item_author_email', item)
author_link = self.__get_dynamic_attr('item_author_link', item)
else:
author_email = author_link = None
pubdate = self.__get_dynamic_attr('item_pubdate', item)
if pubdate and not pubdate.tzinfo:
now = datetime.now()
utcnow = datetime.utcnow()
# Must always subtract smaller time from larger time here.
if utcnow > now:
sign = -1
tzDifference = (utcnow - now)
else:
sign = 1
tzDifference = (now - utcnow)
# Round the timezone offset to the nearest half hour.
tzOffsetMinutes = sign * ((tzDifference.seconds / 60 + 15) / 30) * 30
tzOffset = timedelta(minutes=tzOffsetMinutes)
pubdate = pubdate.replace(tzinfo=FixedOffset(tzOffset))
feed.add_item(
title = title_tmp.render(RequestContext(self.request, {'obj': item, 'site': current_site})),
link = link,
description = description_tmp.render(RequestContext(self.request, {'obj': item, 'site': current_site})),
unique_id = self.__get_dynamic_attr('item_guid', item, link),
enclosure = enc,
pubdate = pubdate,
author_name = author_name,
author_email = author_email,
author_link = author_link,
categories = self.__get_dynamic_attr('item_categories', item),
item_copyright = self.__get_dynamic_attr('item_copyright', item),
**self.item_extra_kwargs(item)
)
return feed

201
django/contrib/syndication/views.py
View File

@ -1,7 +1,203 @@
from django.contrib.syndication import feeds
import datetime
from django.conf import settings
from django.contrib.sites.models import Site, RequestSite
from django.core.exceptions import ImproperlyConfigured, ObjectDoesNotExist
from django.http import HttpResponse, Http404
from django.template import loader, Template, TemplateDoesNotExist, RequestContext
from django.utils import feedgenerator, tzinfo
from django.utils.encoding import force_unicode, iri_to_uri, smart_unicode
from django.utils.html import escape
def add_domain(domain, url):
if not (url.startswith('http://')
or url.startswith('https://')
or url.startswith('mailto:')):
# 'url' must already be ASCII and URL-quoted, so no need for encoding
# conversions here.
url = iri_to_uri(u'http://%s%s' % (domain, url))
return url
class FeedDoesNotExist(ObjectDoesNotExist):
pass
class Feed(object):
feed_type = feedgenerator.DefaultFeed
title_template = None
description_template = None
def __call__(self, request, *args, **kwargs):
try:
obj = self.get_object(request, *args, **kwargs)
except ObjectDoesNotExist:
raise Http404('Feed object does not exist.')
feedgen = self.get_feed(obj, request)
response = HttpResponse(mimetype=feedgen.mime_type)
feedgen.write(response, 'utf-8')
return response
def item_title(self, item):
# Titles should be double escaped by default (see #6533)
return escape(force_unicode(item))
def item_description(self, item):
return force_unicode(item)
def item_link(self, item):
try:
return item.get_absolute_url()
except AttributeError:
raise ImproperlyConfigured('Give your %s class a get_absolute_url() method, or define an item_link() method in your Feed class.' % item.__class__.__name__)
def __get_dynamic_attr(self, attname, obj, default=None):
try:
attr = getattr(self, attname)
except AttributeError:
return default
if callable(attr):
# Check func_code.co_argcount rather than try/excepting the
# function and catching the TypeError, because something inside
# the function may raise the TypeError. This technique is more
# accurate.
if hasattr(attr, 'func_code'):
argcount = attr.func_code.co_argcount
else:
argcount = attr.__call__.func_code.co_argcount
if argcount == 2: # one argument is 'self'
return attr(obj)
else:
return attr()
return attr
def feed_extra_kwargs(self, obj):
"""
Returns an extra keyword arguments dictionary that is used when
initializing the feed generator.
"""
return {}
def item_extra_kwargs(self, item):
"""
Returns an extra keyword arguments dictionary that is used with
the `add_item` call of the feed generator.
"""
return {}
def get_object(self, request, *args, **kwargs):
return None
def get_feed(self, obj, request):
"""
Returns a feedgenerator.DefaultFeed object, fully populated, for
this feed. Raises FeedDoesNotExist for invalid parameters.
"""
if Site._meta.installed:
current_site = Site.objects.get_current()
else:
current_site = RequestSite(request)
link = self.__get_dynamic_attr('link', obj)
link = add_domain(current_site.domain, link)
feed = self.feed_type(
title = self.__get_dynamic_attr('title', obj),
subtitle = self.__get_dynamic_attr('subtitle', obj),
link = link,
description = self.__get_dynamic_attr('description', obj),
language = settings.LANGUAGE_CODE.decode(),
feed_url = add_domain(current_site.domain,
self.__get_dynamic_attr('feed_url', obj) or request.path),
author_name = self.__get_dynamic_attr('author_name', obj),
author_link = self.__get_dynamic_attr('author_link', obj),
author_email = self.__get_dynamic_attr('author_email', obj),
categories = self.__get_dynamic_attr('categories', obj),
feed_copyright = self.__get_dynamic_attr('feed_copyright', obj),
feed_guid = self.__get_dynamic_attr('feed_guid', obj),
ttl = self.__get_dynamic_attr('ttl', obj),
**self.feed_extra_kwargs(obj)
)
title_tmp = None
if self.title_template is not None:
try:
title_tmp = loader.get_template(self.title_template)
except TemplateDoesNotExist:
pass
description_tmp = None
if self.description_template is not None:
try:
description_tmp = loader.get_template(self.description_template)
except TemplateDoesNotExist:
pass
for item in self.__get_dynamic_attr('items', obj):
if title_tmp is not None:
title = title_tmp.render(RequestContext(request, {'obj': item, 'site': current_site}))
else:
title = self.__get_dynamic_attr('item_title', item)
if description_tmp is not None:
description = description_tmp.render(RequestContext(request, {'obj': item, 'site': current_site}))
else:
description = self.__get_dynamic_attr('item_description', item)
link = add_domain(current_site.domain, self.__get_dynamic_attr('item_link', item))
enc = None
enc_url = self.__get_dynamic_attr('item_enclosure_url', item)
if enc_url:
enc = feedgenerator.Enclosure(
url = smart_unicode(enc_url),
length = smart_unicode(self.__get_dynamic_attr('item_enclosure_length', item)),
mime_type = smart_unicode(self.__get_dynamic_attr('item_enclosure_mime_type', item))
)
author_name = self.__get_dynamic_attr('item_author_name', item)
if author_name is not None:
author_email = self.__get_dynamic_attr('item_author_email', item)
author_link = self.__get_dynamic_attr('item_author_link', item)
else:
author_email = author_link = None
pubdate = self.__get_dynamic_attr('item_pubdate', item)
if pubdate and not pubdate.tzinfo:
now = datetime.datetime.now()
utcnow = datetime.datetime.utcnow()
# Must always subtract smaller time from larger time here.
if utcnow > now:
sign = -1
tzDifference = (utcnow - now)
else:
sign = 1
tzDifference = (now - utcnow)
# Round the timezone offset to the nearest half hour.
tzOffsetMinutes = sign * ((tzDifference.seconds / 60 + 15) / 30) * 30
tzOffset = datetime.timedelta(minutes=tzOffsetMinutes)
pubdate = pubdate.replace(tzinfo=tzinfo.FixedOffset(tzOffset))
feed.add_item(
title = title,
link = link,
description = description,
unique_id = self.__get_dynamic_attr('item_guid', item, link),
enclosure = enc,
pubdate = pubdate,
author_name = author_name,
author_email = author_email,
author_link = author_link,
categories = self.__get_dynamic_attr('item_categories', item),
item_copyright = self.__get_dynamic_attr('item_copyright', item),
**self.item_extra_kwargs(item)
)
return feed
def feed(request, url, feed_dict=None):
"""Provided for backwards compatibility."""
import warnings
warnings.warn('The syndication feed() view is deprecated. Please use the '
'new class based view API.',
category=PendingDeprecationWarning)
if not feed_dict:
raise Http404("No feeds are registered.")
@ -17,9 +213,10 @@ def feed(request, url, feed_dict=None):
try:
feedgen = f(slug, request).get_feed(param)
except feeds.FeedDoesNotExist:
except FeedDoesNotExist:
raise Http404("Invalid feed parameters. Slug %r is valid, but other parameters, or lack thereof, are not." % slug)
response = HttpResponse(mimetype=feedgen.mime_type)
feedgen.write(response, 'utf-8')
return response

28
django/utils/feedgenerator.py
View File

@ -19,8 +19,8 @@ For definitions of the different versions of RSS, see:
http://diveintomark.org/archives/2004/02/04/incompatible-rss
"""
import re
import datetime
import urlparse
from django.utils.xmlutils import SimplerXMLGenerator
from django.utils.encoding import force_unicode, iri_to_uri
@ -46,12 +46,16 @@ def rfc3339_date(date):
return date.strftime('%Y-%m-%dT%H:%M:%SZ')
def get_tag_uri(url, date):
"Creates a TagURI. See http://diveintomark.org/archives/2004/05/28/howto-atom-id"
tag = re.sub('^http://', '', url)
"""
Creates a TagURI.
See http://diveintomark.org/archives/2004/05/28/howto-atom-id
"""
url_split = urlparse.urlparse(url)
d = ''
if date is not None:
tag = re.sub('/', ',%s:/' % date.strftime('%Y-%m-%d'), tag, 1)
tag = re.sub('#', '/', tag)
return u'tag:' + tag
d = ',%s' % date.strftime('%Y-%m-%d')
return u'tag:%s%s:%s/%s' % (url_split.hostname, d, url_split.path, url_split.fragment)
class SyndicationFeed(object):
"Base class for all syndication feeds. Subclasses should provide write()"
@ -61,6 +65,9 @@ class SyndicationFeed(object):
to_unicode = lambda s: force_unicode(s, strings_only=True)
if categories:
categories = [force_unicode(c) for c in categories]
if ttl is not None:
# Force ints to unicode
ttl = force_unicode(ttl)
self.feed = {
'title': to_unicode(title),
'link': iri_to_uri(link),
@ -91,6 +98,9 @@ class SyndicationFeed(object):
to_unicode = lambda s: force_unicode(s, strings_only=True)
if categories:
categories = [to_unicode(c) for c in categories]
if ttl is not None:
# Force ints to unicode
ttl = force_unicode(ttl)
item = {
'title': to_unicode(title),
'link': iri_to_uri(link),
@ -186,7 +196,8 @@ class RssFeed(SyndicationFeed):
handler.endElement(u"rss")
def rss_attributes(self):
return {u"version": self._version}
return {u"version": self._version,
u"xmlns:atom": u"http://www.w3.org/2005/Atom"}
def write_items(self, handler):
for item in self.items:
@ -198,6 +209,7 @@ class RssFeed(SyndicationFeed):
handler.addQuickElement(u"title", self.feed['title'])
handler.addQuickElement(u"link", self.feed['link'])
handler.addQuickElement(u"description", self.feed['description'])
handler.addQuickElement(u"atom:link", None, {u"rel": u"self", u"href": self.feed['feed_url']})
if self.feed['language'] is not None:
handler.addQuickElement(u"language", self.feed['language'])
for cat in self.feed['categories']:
@ -235,7 +247,7 @@ class Rss201rev2Feed(RssFeed):
elif item["author_email"]:
handler.addQuickElement(u"author", item["author_email"])
elif item["author_name"]:
handler.addQuickElement(u"dc:creator", item["author_name"], {"xmlns:dc": u"http://purl.org/dc/elements/1.1/"})
handler.addQuickElement(u"dc:creator", item["author_name"], {u"xmlns:dc": u"http://purl.org/dc/elements/1.1/"})
if item['pubdate'] is not None:
handler.addQuickElement(u"pubDate", rfc2822_date(item['pubdate']).decode('utf-8'))

4
docs/internals/deprecation.txt
View File

@ -82,6 +82,10 @@ their deprecation, as per the :ref:`Django deprecation policy
* The ability to use a function-based test runners will be removed,
along with the ``django.test.simple.run_tests()`` test runner.
* The ``views.feed()`` view and ``feeds.Feed`` class in
``django.contrib.syndication`` have been deprecated since the 1.2
release. The class-based view ``views.Feed`` should be used instead.
* 2.0
* ``django.views.defaults.shortcut()``. This function has been moved
to ``django.contrib.contenttypes.views.shortcut()`` as part of the

403
docs/ref/contrib/syndication.txt
View File

@ -8,14 +8,15 @@ The syndication feed framework
:synopsis: A framework for generating syndication feeds, in RSS and Atom,
quite easily.
Django comes with a high-level syndication-feed-generating framework that makes
creating RSS_ and Atom_ feeds easy.
Django comes with a high-level syndication-feed-generating framework
that makes creating RSS_ and Atom_ feeds easy.
To create any syndication feed, all you have to do is write a short Python
class. You can create as many feeds as you want.
To create any syndication feed, all you have to do is write a short
Python class. You can create as many feeds as you want.
Django also comes with a lower-level feed-generating API. Use this if you want
to generate feeds outside of a Web context, or in some other lower-level way.
Django also comes with a lower-level feed-generating API. Use this if
you want to generate feeds outside of a Web context, or in some other
lower-level way.
.. _RSS: http://www.whatisrss.com/
.. _Atom: http://www.atomenabled.org/
@ -23,74 +24,37 @@ to generate feeds outside of a Web context, or in some other lower-level way.
The high-level framework
========================
.. versionchanged:: 1.2
The high-level feeds framework was refactored in Django 1.2. The
pre-1.2 interface still exists, but it has been deprecated, and
will be removed in Django 1.4. If you need to maintain an old-style
Django feed, please consult the Django 1.1 documentation. For
details on updating to use the new high-level feed framework, see
the :ref:`Django 1.2 release notes <1.2-updating-feeds>`.
Overview
--------
The high-level feed-generating framework is a view that's hooked to ``/feeds/``
by default. Django uses the remainder of the URL (everything after ``/feeds/``)
to determine which feed to output.
To create a feed, just write a :class:`~django.contrib.syndication.feeds.Feed`
class and point to it in your :ref:`URLconf <topics-http-urls>`.
Initialization
--------------
To activate syndication feeds on your Django site, add this line to your
:ref:`URLconf <topics-http-urls>`::
(r'^feeds/(?P<url>.*)/$', 'django.contrib.syndication.views.feed', {'feed_dict': feeds}),
This tells Django to use the RSS framework to handle all URLs starting with
:file:`"feeds/"`. (You can change that :file:`"feeds/"` prefix to fit your own
needs.)
This URLconf line has an extra argument: ``{'feed_dict': feeds}``. Use this
extra argument to pass the syndication framework the feeds that should be
published under that URL.
Specifically, :data:`feed_dict` should be a dictionary that maps a feed's slug
(short URL label) to its :class:`~django.contrib.syndication.feeds.Feed` class.
You can define the ``feed_dict`` in the URLconf itself. Here's a full example
URLconf::
from django.conf.urls.defaults import *
from myproject.feeds import LatestEntries, LatestEntriesByCategory
feeds = {
'latest': LatestEntries,
'categories': LatestEntriesByCategory,
}
urlpatterns = patterns('',
# ...
(r'^feeds/(?P<url>.*)/$', 'django.contrib.syndication.views.feed',
{'feed_dict': feeds}),
# ...
)
The above example registers two feeds:
* The feed represented by ``LatestEntries`` will live at ``feeds/latest/``.
* The feed represented by ``LatestEntriesByCategory`` will live at
``feeds/categories/``.
Once that's set up, you just need to define the
:class:`~django.contrib.syndication.feeds.Feed` classes themselves.
The high-level feed-generating framework is supplied by the
:class:`~django.contrib.syndication.views.Feed` class. To create a
feed, write a :class:`~django.contrib.syndication.views.Feed` class
and point to an instance of it in your :ref:`URLconf
<topics-http-urls>`.
Feed classes
------------
A :class:`~django.contrib.syndication.feeds.Feed` class is a simple Python class
that represents a syndication feed. A feed can be simple (e.g., a "site news"
feed, or a basic feed displaying the latest entries of a blog) or more complex
(e.g., a feed displaying all the blog entries in a particular category, where
the category is variable).
A :class:`~django.contrib.syndication.views.Feed` class is a Python
class that represents a syndication feed. A feed can be simple (e.g.,
a "site news" feed, or a basic feed displaying the latest entries of a
blog) or more complex (e.g., a feed displaying all the blog entries in
a particular category, where the category is variable).
:class:`~django.contrib.syndication.feeds.Feed` classes must subclass
``django.contrib.syndication.feeds.Feed``. They can live anywhere in your
codebase.
Feed classes subclass :class:`django.contrib.syndication.views.Feed`.
They can live anywhere in your codebase.
Instances of :class:`~django.contrib.syndication.views.Feed` classes
are views which can be used in your :ref:`URLconf <topics-http-urls>`.
A simple example
----------------
@ -98,10 +62,10 @@ A simple example
This simple example, taken from `chicagocrime.org`_, describes a feed of the
latest five news items::
from django.contrib.syndication.feeds import Feed
from django.contrib.syndication.views import Feed
from chicagocrime.models import NewsItem
class LatestEntries(Feed):
class LatestEntriesFeed(Feed):
title = "Chicagocrime.org site news"
link = "/sitenews/"
description = "Updates on changes and additions to chicagocrime.org."
@ -109,9 +73,27 @@ latest five news items::
def items(self):
return NewsItem.objects.order_by('-pub_date')[:5]
def item_title(self, item):
return item.title
def item_description(self, item):
return item.description
To connect a URL to this feed, put an instance of the Feed object in
your :ref:`URLconf <topics-http-urls>`. For example::
from django.conf.urls.defaults import *
from myproject.feeds import LatestEntriesFeed
urlpatterns = patterns('',
# ...
(r'^latest/feed/$', LatestEntriesFeed()),
# ...
)
Note:
* The class subclasses ``django.contrib.syndication.feeds.Feed``.
* The Feed class subclasses :class:`django.contrib.syndication.views.Feed`.
* :attr:`title`, :attr:`link` and :attr:`description` correspond to the
standard RSS ``<title>``, ``<link>`` and ``<description>`` elements,
@ -129,17 +111,23 @@ Note:
:attr:`subtitle` attribute instead of the :attr:`description` attribute.
See `Publishing Atom and RSS feeds in tandem`_, later, for an example.
One thing's left to do. In an RSS feed, each ``<item>`` has a ``<title>``,
One thing is left to do. In an RSS feed, each ``<item>`` has a ``<title>``,
``<link>`` and ``<description>``. We need to tell the framework what data to put
into those elements.
* To specify the contents of ``<title>`` and ``<description>``, create
:ref:`Django templates <topics-templates>` called
:file:`feeds/latest_title.html` and
:file:`feeds/latest_description.html`, where :attr:`latest` is the
:attr:`slug` specified in the URLconf for the given feed. Note the
``.html`` extension is required. The RSS system renders that template for
each item, passing it two template context variables:
* For the contents of ``<title>`` and ``<description>``, Django tries
calling the methods :meth:`item_title()` and :meth:`item_description()` on
the :class:`~django.contrib.syndication.views.Feed` class. They are passed
a single parameter, :attr:`item`, which is the object itself. These are
optional; by default, the unicode representation of the object is used for
both.
If you want to do any special formatting for either the title or
description, :ref:`Django templates <topics-templates>` can be used
instead. Their paths can be specified with the ``title_template`` and
``description_template`` attributes on the
:class:`~django.contrib.syndication.views.Feed` class. The templates are
rendered for each item and are passed two template context variables:
* ``{{ obj }}`` -- The current object (one of whichever objects you
returned in :meth:`items()`).
@ -152,152 +140,102 @@ into those elements.
:ref:`RequestSite section of the sites framework documentation
<requestsite-objects>` for more.
If you don't create a template for either the title or description, the
framework will use the template ``"{{ obj }}"`` by default -- that is, the
normal string representation of the object. You can also change the names
of these two templates by specifying ``title_template`` and
``description_template`` as attributes of your
:class:`~django.contrib.syndication.feeds.Feed` class.
See `a complex example`_ below that uses a description template.
* To specify the contents of ``<link>``, you have two options. For each item
in :meth:`items()`, Django first tries calling a method
:meth:`item_link()` in the :class:`~django.contrib.syndication.feeds.Feed`
class, passing it a single parameter, :attr:`item`, which is the object
itself. If that method doesn't exist, Django tries executing a
``get_absolute_url()`` method on that object. . Both
``get_absolute_url()`` and :meth:`item_link()` should return the item's
URL as a normal Python string. As with ``get_absolute_url()``, the result
of :meth:`item_link()` will be included directly in the URL, so you are
responsible for doing all necessary URL quoting and conversion to ASCII
inside the method itself.
* For the LatestEntries example above, we could have very simple feed
templates:
* latest_title.html:
.. code-block:: html+django
{{ obj.title }}
* latest_description.html:
.. code-block:: html+django
{{ obj.description }}
in :meth:`items()`, Django first tries calling the
:meth:`item_link()` method on the
:class:`~django.contrib.syndication.views.Feed` class. In a similar way to
the title and description, it is passed it a single parameter,
:attr:`item`. If that method doesn't exist, Django tries executing a
``get_absolute_url()`` method on that object. Both
:meth:`get_absolute_url()` and :meth:`item_link()` should return the
item's URL as a normal Python string. As with ``get_absolute_url()``, the
result of :meth:`item_link()` will be included directly in the URL, so you
are responsible for doing all necessary URL quoting and conversion to
ASCII inside the method itself.
.. _chicagocrime.org: http://www.chicagocrime.org/
A complex example
-----------------
The framework also supports more complex feeds, via parameters.
The framework also supports more complex feeds, via arguments.
For example, `chicagocrime.org`_ offers an RSS feed of recent crimes for every
police beat in Chicago. It'd be silly to create a separate
:class:`~django.contrib.syndication.feeds.Feed` class for each police beat; that
:class:`~django.contrib.syndication.views.Feed` class for each police beat; that
would violate the :ref:`DRY principle <dry>` and would couple data to
programming logic. Instead, the syndication framework lets you make generic
feeds that output items based on information in the feed's URL.
programming logic. Instead, the syndication framework lets you access the
arguments passed from your :ref:`URLconf <topics-http-urls>` so feeds can output
items based on information in the feed's URL.
On chicagocrime.org, the police-beat feeds are accessible via URLs like this:
* :file:`/rss/beats/0613/` -- Returns recent crimes for beat 0613.
* :file:`/rss/beats/1424/` -- Returns recent crimes for beat 1424.
* :file:`/beats/613/rss/` -- Returns recent crimes for beat 613.
* :file:`/beats/1424/rss/` -- Returns recent crimes for beat 1424.
The slug here is ``"beats"``. The syndication framework sees the extra URL bits
after the slug -- ``0613`` and ``1424`` -- and gives you a hook to tell it what
those URL bits mean, and how they should influence which items get published in
the feed.
These can be matched with a :ref:`URLconf <topics-http-urls>` line such as::
An example makes this clear. Here's the code for these beat-specific feeds::
(r'^beats/(?P<beat_id>\d+)/rss/$', BeatFeed()),
from django.contrib.syndication.feeds import FeedDoesNotExist
from django.core.exceptions import ObjectDoesNotExist
Like a view, the arguments in the URL are passed to the :meth:`get_object()`
method along with the request object.
.. versionchanged:: 1.2
Prior to version 1.2, ``get_object()`` only accepted a ``bits`` argument.
Here's the code for these beat-specific feeds::
from django.contrib.syndication.views import FeedDoesNotExist
from django.shortcuts import get_object_or_404
class BeatFeed(Feed):
def get_object(self, bits):
# In case of "/rss/beats/0613/foo/bar/baz/", or other such clutter,
# check that bits has only one member.
if len(bits) != 1:
raise ObjectDoesNotExist
return Beat.objects.get(beat__exact=bits[0])
description_template = 'feeds/beat_description.html'
def get_object(self, request, beat_id):
return get_object_or_404(Beat, pk=beat_id)
def title(self, obj):
return "Chicagocrime.org: Crimes for beat %s" % obj.beat
def link(self, obj):
if not obj:
raise FeedDoesNotExist
return obj.get_absolute_url()
def description(self, obj):
return "Crimes recently reported in police beat %s" % obj.beat
def items(self, obj):
return Crime.objects.filter(beat__id__exact=obj.id).order_by('-crime_date')[:30]
return Crime.objects.filter(beat=obj).order_by('-crime_date')[:30]
Here's the basic algorithm the RSS framework follows, given this class and a
request to the URL :file:`/rss/beats/0613/`:
To generate the feed's ``<title>``, ``<link>`` and ``<description>``, Django
uses the :meth:`title()`, :meth:`link()` and :meth:`description()` methods. In
the previous example, they were simple string class attributes, but this example
illustrates that they can be either strings *or* methods. For each of
:attr:`title`, :attr:`link` and :attr:`description`, Django follows this
algorithm:
* The framework gets the URL :file:`/rss/beats/0613/` and notices there's an
extra bit of URL after the slug. It splits that remaining string by the
slash character (``"/"``) and calls the
:class:`~django.contrib.syndication.feeds.Feed` class'
:meth:`get_object()` method, passing it the bits. In this case, bits is
``['0613']``. For a request to :file:`/rss/beats/0613/foo/bar/`, bits
would be ``['0613', 'foo', 'bar']``.
* First, it tries to call a method, passing the ``obj`` argument, where
``obj`` is the object returned by :meth:`get_object()`.
* :meth:`get_object()` is responsible for retrieving the given beat, from
the given ``bits``. In this case, it uses the Django database API to
retrieve the beat. Note that :meth:`get_object()` should raise
:exc:`django.core.exceptions.ObjectDoesNotExist` if given invalid
parameters. There's no ``try``/``except`` around the
``Beat.objects.get()`` call, because it's not necessary; that function
raises :exc:`Beat.DoesNotExist` on failure, and :exc:`Beat.DoesNotExist`
is a subclass of :exc:`ObjectDoesNotExist`. Raising
:exc:`ObjectDoesNotExist` in :meth:`get_object()` tells Django to produce
a 404 error for that request.
* Failing that, it tries to call a method with no arguments.
.. versionadded:: 1.0
:meth:`get_object()` can handle the :file:`/rss/beats/` url.
* Failing that, it uses the class attribute.
The :meth:`get_object()` method also has a chance to handle the
:file:`/rss/beats/` url. In this case, :data:`bits` will be an
empty list. In our example, ``len(bits) != 1`` and an
:exc:`ObjectDoesNotExist` exception will be raised, so
:file:`/rss/beats/` will generate a 404 page. But you can handle this case
however you like. For example, you could generate a combined feed for all
beats.
Also note that :meth:`items()` also follows the same algorithm -- first, it
tries :meth:`items(obj)`, then :meth:`items()`, then finally an :attr:`items`
class attribute (which should be a list).
* To generate the feed's ``<title>``, ``<link>`` and ``<description>``,
Django uses the :meth:`title()`, :meth:`link()` and :meth:`description()`
methods. In the previous example, they were simple string class
attributes, but this example illustrates that they can be either strings
*or* methods. For each of :attr:`title`, :attr:`link` and
:attr:`description`, Django follows this algorithm:
We are using a template for the item descriptions. It can be very simple:
* First, it tries to call a method, passing the ``obj`` argument, where
``obj`` is the object returned by :meth:`get_object()`.
.. code-block:: html+django
* Failing that, it tries to call a method with no arguments.
{{ obj.description }}
* Failing that, it uses the class attribute.
Inside the :meth:`link()` method, we handle the possibility that ``obj``
might be ``None``, which can occur when the URL isn't fully specified. In
some cases, you might want to do something else in this case, which would
mean you'd need to check for ``obj`` existing in other methods as well.
(The :meth:`link()` method is called very early in the feed generation
process, so it's a good place to bail out early.)
* Finally, note that :meth:`items()` in this example also takes the ``obj``
argument. The algorithm for :attr:`items` is the same as described in the
previous step -- first, it tries :meth:`items(obj)`, then :meth:`items()`,
then finally an :attr:`items` class attribute (which should be a list).
However, you are free to add formatting as desired.
The ``ExampleFeed`` class below gives full documentation on methods and
attributes of :class:`~django.contrib.syndication.feeds.Feed` classes.
attributes of :class:`~django.contrib.syndication.views.Feed` classes.
Specifying the type of feed
---------------------------
@ -305,7 +243,7 @@ Specifying the type of feed
By default, feeds produced in this framework use RSS 2.0.
To change that, add a ``feed_type`` attribute to your
:class:`~django.contrib.syndication.feeds.Feed` class, like so::
:class:`~django.contrib.syndication.views.Feed` class, like so::
from django.utils.feedgenerator import Atom1Feed
@ -353,13 +291,13 @@ Publishing Atom and RSS feeds in tandem
Some developers like to make available both Atom *and* RSS versions of their
feeds. That's easy to do with Django: Just create a subclass of your
:class:`~django.contrib.syndication.feeds.Feed`
:class:`~django.contrib.syndication.views.Feed`
class and set the :attr:`feed_type` to something different. Then update your
URLconf to add the extra versions.
Here's a full example::
from django.contrib.syndication.feeds import Feed
from django.contrib.syndication.views import Feed
from chicagocrime.models import NewsItem
from django.utils.feedgenerator import Atom1Feed
@ -381,7 +319,7 @@ Here's a full example::
a feed-level "description," but they *do* provide for a "subtitle."
If you provide a :attr:`description` in your
:class:`~django.contrib.syndication.feeds.Feed` class, Django will *not*
:class:`~django.contrib.syndication.views.Feed` class, Django will *not*
automatically put that into the :attr:`subtitle` element, because a
subtitle and description are not necessarily the same thing. Instead, you
should define a :attr:`subtitle` attribute.
@ -394,56 +332,50 @@ And the accompanying URLconf::
from django.conf.urls.defaults import *
from myproject.feeds import RssSiteNewsFeed, AtomSiteNewsFeed
feeds = {
'rss': RssSiteNewsFeed,
'atom': AtomSiteNewsFeed,
}
urlpatterns = patterns('',
# ...
(r'^feeds/(?P<url>.*)/$', 'django.contrib.syndication.views.feed',
{'feed_dict': feeds}),
(r'^sitenews/rss/$', RssSiteNewsFeed()),
(r'^sitenews/atom/$', AtomSiteNewsFeed()),
# ...
)
Feed class reference
--------------------
.. class:: django.contrib.syndication.feeds.Feed
.. class:: django.contrib.syndication.views.Feed
This example illustrates all possible attributes and methods for a
:class:`~django.contrib.syndication.feeds.Feed` class::
:class:`~django.contrib.syndication.views.Feed` class::
from django.contrib.syndication.feeds import Feed
from django.contrib.syndication.views import Feed
from django.utils import feedgenerator
class ExampleFeed(Feed):
# FEED TYPE -- Optional. This should be a class that subclasses
# django.utils.feedgenerator.SyndicationFeed. This designates which
# type of feed this should be: RSS 2.0, Atom 1.0, etc.
# If you don't specify feed_type, your feed will be RSS 2.0.
# This should be a class, not an instance of the class.
# django.utils.feedgenerator.SyndicationFeed. This designates
# which type of feed this should be: RSS 2.0, Atom 1.0, etc. If
# you don't specify feed_type, your feed will be RSS 2.0. This
# should be a class, not an instance of the class.
feed_type = feedgenerator.Rss201rev2Feed
# TEMPLATE NAMES -- Optional. These should be strings representing
# names of Django templates that the system should use in rendering the
# title and description of your feed items. Both are optional.
# If you don't specify one, or either, Django will use the template
# 'feeds/SLUG_title.html' and 'feeds/SLUG_description.html', where SLUG
# is the slug you specify in the URL.
# TEMPLATE NAMES -- Optional. These should be strings
# representing names of Django templates that the system should
# use in rendering the title and description of your feed items.
# Both are optional. If a template is not specified, the
# item_title() or item_description() methods are used instead.
title_template = None
description_template = None
# TITLE -- One of the following three is required. The framework looks
# for them in this order.
# TITLE -- One of the following three is required. The framework
# looks for them in this order.
def title(self, obj):
"""
Takes the object returned by get_object() and returns the feed's
title as a normal Python string.
Takes the object returned by get_object() and returns the
feed's title as a normal Python string.
"""
def title(self):
@ -453,13 +385,13 @@ This example illustrates all possible attributes and methods for a
title = 'foo' # Hard-coded title.
# LINK -- One of the following three is required. The framework looks
# for them in this order.
# LINK -- One of the following three is required. The framework
# looks for them in this order.
def link(self, obj):
"""
Takes the object returned by get_object() and returns the feed's
link as a normal Python string.
# Takes the object returned by get_object() and returns the feed's
# link as a normal Python string.
"""
def link(self):
@ -572,18 +504,18 @@ This example illustrates all possible attributes and methods for a
# COPYRIGHT NOTICE -- One of the following three is optional. The
# framework looks for them in this order.
def copyright(self, obj):
def feed_copyright(self, obj):
"""
Takes the object returned by get_object() and returns the feed's
copyright notice as a normal Python string.
"""
def copyright(self):
def feed_copyright(self):
"""
Returns the feed's copyright notice as a normal Python string.
"""
copyright = 'Copyright (c) 2007, Sally Smith' # Hard-coded copyright notice.
feed_copyright = 'Copyright (c) 2007, Sally Smith' # Hard-coded copyright notice.
# TTL -- One of the following three is optional. The framework looks
# for them in this order. Ignored for Atom feeds.
@ -620,13 +552,44 @@ This example illustrates all possible attributes and methods for a
# GET_OBJECT -- This is required for feeds that publish different data
# for different URL parameters. (See "A complex example" above.)
def get_object(self, bits):
def get_object(self, request, *args, **kwargs):
"""
Takes a list of strings gleaned from the URL and returns an object
represented by this feed. Raises
Takes the current request and the arguments from the URL, and
returns an object represented by this feed. Raises
django.core.exceptions.ObjectDoesNotExist on error.
"""
# ITEM TITLE AND DESCRIPTION -- If title_template or
# description_template are not defined, these are used instead. Both are
# optional, by default they will use the unicode representation of the
# item.
def item_title(self, item):
"""
Takes an item, as returned by items(), and returns the item's
title as a normal Python string.
"""
def item_title(self):
"""
Returns the title for every item in the feed.
"""
item_title = 'Breaking News: Nothing Happening' # Hard-coded title.
def item_description(self, item):
"""
Takes an item, as returned by items(), and returns the item's
description as a normal Python string.
"""
def item_description(self):
"""
Returns the description for every item in the feed.
"""
item_description = 'A description of the item.' # Hard-coded description.
# ITEM LINK -- One of these three is required. The framework looks for
# them in this order.
@ -686,7 +649,7 @@ This example illustrates all possible attributes and methods for a
item_author_email = 'test@example.com' # Hard-coded author e-mail.
# ITEM AUTHOR LINK --One of the following three is optional. The
# ITEM AUTHOR LINK -- One of the following three is optional. The
# framework looks for them in this order. In each case, the URL should
# include the "http://" and domain name.
#

92
docs/releases/1.2.txt
View File

@ -386,6 +386,87 @@ approach. Old style function-based test runners will still work, but
should be updated to use the new :ref:`class-based runners
<topics-testing-test_runner>`.
.. _1.2-updating-feeds:
``Feed`` in ``django.contrib.syndication.feeds``
------------------------------------------------
The :class:`django.contrib.syndication.feeds.Feed` class has been
replaced by the :class:`django.contrib.syndication.views.Feed` class.
The old ``feeds.Feed`` class is deprecated, and will be removed in
Django 1.4.
The new class has an almost identical API, but allows instances to be
used as views. For example, consider the use of the old framework in
the following :ref:`URLconf <topics-http-urls>`::
from django.conf.urls.defaults import *
from myproject.feeds import LatestEntries, LatestEntriesByCategory
feeds = {
'latest': LatestEntries,
'categories': LatestEntriesByCategory,
}
urlpatterns = patterns('',
# ...
(r'^feeds/(?P<url>.*)/$', 'django.contrib.syndication.views.feed',
{'feed_dict': feeds}),
# ...
)
Using the new Feed class, these feeds can be deployed directly as views::
from django.conf.urls.defaults import *
from myproject.feeds import LatestEntries, LatestEntriesByCategory
urlpatterns = patterns('',
# ...
(r'^feeds/latest/$', LatestEntries()),
(r'^feeds/categories/(?P<category_id>\d+)/$', LatestEntriesByCategory()),
# ...
)
If you currently use the ``feed()`` view, the ``LatestEntries`` class
would not need to be modified apart from subclassing the new
:class:`~django.contrib.syndication.views.Feed` class.
However, ``LatestEntriesByCategory`` uses the ``get_object()`` method
with the ``bits`` argument to specify a specific category to show. In
the new :class:`~django.contrib.syndication.views.Feed` class,
``get_object()`` method takes a ``request`` and arguments from the
URL, so it would look like this::
from django.contrib.syndication.views import Feed
from django.shortcuts import get_object_or_404
from myproject.models import Category
class LatestEntriesByCategory(Feed):
def get_object(self, request, category_id):
return get_object_or_404(Category, id=category_id)
# ...
Additionally, the ``get_feed()`` method on ``Feed`` classes now take
different arguments, which may impact you if you use the ``Feed``
classes directly. Instead of just taking an optional ``url`` argument,
it now takes two arguments: the object returned by its own
``get_object()`` method, and the current ``request`` object.
To take into account ``Feed`` classes not being initialized for each
request, the ``__init__()`` method now takes no arguments by default.
Previously it would have taken the ``slug`` from the URL and the
``request`` object.
In accordance with `RSS best practices`_, RSS feeds will now include
an ``atom:link`` element. You may need to update your tests to take
this into account.
For more information, see the full :ref:`syndication framework
documentation <ref-contrib-syndication>`.
.. _RSS best practices: http://www.rssboard.org/rss-profile
What's new in Django 1.2
========================
@ -556,7 +637,7 @@ Object-level permissions
A foundation for specifying permissions at the per-object level has been added.
Although there is no implementation of this in core, a custom authentication
backend can provide this implementation and it will be used by
:class:`django.contrib.auth.models.User`. See the :ref:`authentication docs
:class:`django.contrib.auth.models.User`. See the :ref:`authentication docs
<topics-auth>` for more information.
Permissions for anonymous users
@ -568,3 +649,12 @@ User already did. This is useful for centralizing permission handling - apps
can always delegate the question of whether something is allowed or not to
the authorization/authentication backend. See the :ref:`authentication
docs <topics-auth>` for more details.
Syndication feeds as views
--------------------------
:ref:`Syndication feeds <ref-contrib-syndication>` can now be used directly as
views in your :ref:`URLconf <topics-http-urls>`. This means that you can
maintain complete control over the URL structure of your feeds. Like any other view, feeds views are passed a ``request`` object, so you can
do anything you would normally do with a view, like user based access control,
or making a feed a named URL.

160
tests/regressiontests/syndication/feeds.py
View File

@ -1,66 +1,142 @@
from django.contrib.syndication import feeds, views
from django.core.exceptions import ObjectDoesNotExist
from django.contrib.syndication import feeds
from django.utils.feedgenerator import Atom1Feed
from django.utils import tzinfo
from django.utils import feedgenerator, tzinfo
from models import Article, Entry
class ComplexFeed(feeds.Feed):
def get_object(self, bits):
if len(bits) != 1:
class ComplexFeed(views.Feed):
def get_object(self, request, foo=None):
if foo is not None:
raise ObjectDoesNotExist
return None
class TestRssFeed(feeds.Feed):
link = "/blog/"
class TestRss2Feed(views.Feed):
title = 'My blog'
description = 'A more thorough description of my blog.'
link = '/blog/'
feed_guid = '/foo/bar/1234'
author_name = 'Sally Smith'
author_email = 'test@example.com'
author_link = 'http://www.example.com/'
categories = ('python', 'django')
feed_copyright = 'Copyright (c) 2007, Sally Smith'
ttl = 600
def items(self):
from models import Entry
return Entry.objects.all()
def item_link(self, item):
return "/blog/%s/" % item.pk
class TestAtomFeed(TestRssFeed):
feed_type = Atom1Feed
def item_description(self, item):
return "Overridden description: %s" % item
class MyCustomAtom1Feed(Atom1Feed):
def item_pubdate(self, item):
return item.date
item_author_name = 'Sally Smith'
item_author_email = 'test@example.com'
item_author_link = 'http://www.example.com/'
item_categories = ('python', 'testing')
item_copyright = 'Copyright (c) 2007, Sally Smith'
class TestRss091Feed(TestRss2Feed):
feed_type = feedgenerator.RssUserland091Feed
class TestAtomFeed(TestRss2Feed):
feed_type = feedgenerator.Atom1Feed
subtitle = TestRss2Feed.description
class ArticlesFeed(TestRss2Feed):
"""
Test of a custom feed generator class.
"""
def root_attributes(self):
attrs = super(MyCustomAtom1Feed, self).root_attributes()
attrs[u'django'] = u'rocks'
return attrs
def add_root_elements(self, handler):
super(MyCustomAtom1Feed, self).add_root_elements(handler)
handler.addQuickElement(u'spam', u'eggs')
def item_attributes(self, item):
attrs = super(MyCustomAtom1Feed, self).item_attributes(item)
attrs[u'bacon'] = u'yum'
return attrs
def add_item_elements(self, handler, item):
super(MyCustomAtom1Feed, self).add_item_elements(handler, item)
handler.addQuickElement(u'ministry', u'silly walks')
class TestCustomFeed(TestAtomFeed):
feed_type = MyCustomAtom1Feed
A feed to test no link being defined. Articles have no get_absolute_url()
method, and item_link() is not defined.
"""
def items(self):
return Article.objects.all()
class TestEnclosureFeed(TestRss2Feed):
pass
class TemplateFeed(TestRss2Feed):
"""
A feed to test defining item titles and descriptions with templates.
"""
title_template = 'syndication/title.html'
description_template = 'syndication/description.html'
# Defining a template overrides any item_title definition
def item_title(self):
return "Not in a template"
class NaiveDatesFeed(TestAtomFeed):
"""
A feed with naive (non-timezone-aware) dates.
"""
def item_pubdate(self, item):
return item.date
class TZAwareDatesFeed(TestAtomFeed):
"""
A feed with timezone-aware dates.
"""
def item_pubdate(self, item):
# Provide a weird offset so that the test can know it's getting this
# specific offset and not accidentally getting on from
# specific offset and not accidentally getting on from
# settings.TIME_ZONE.
return item.date.replace(tzinfo=tzinfo.FixedOffset(42))
return item.date.replace(tzinfo=tzinfo.FixedOffset(42))
class TestFeedUrlFeed(TestAtomFeed):
feed_url = 'http://example.com/customfeedurl/'
class MyCustomAtom1Feed(feedgenerator.Atom1Feed):
"""
Test of a custom feed generator class.
"""
def root_attributes(self):
attrs = super(MyCustomAtom1Feed, self).root_attributes()
attrs[u'django'] = u'rocks'
return attrs
def add_root_elements(self, handler):
super(MyCustomAtom1Feed, self).add_root_elements(handler)
handler.addQuickElement(u'spam', u'eggs')
def item_attributes(self, item):
attrs = super(MyCustomAtom1Feed, self).item_attributes(item)
attrs[u'bacon'] = u'yum'
return attrs
def add_item_elements(self, handler, item):
super(MyCustomAtom1Feed, self).add_item_elements(handler, item)
handler.addQuickElement(u'ministry', u'silly walks')
class TestCustomFeed(TestAtomFeed):
feed_type = MyCustomAtom1Feed
class DeprecatedComplexFeed(feeds.Feed):
def get_object(self, bits):
if len(bits) != 1:
raise ObjectDoesNotExist
return None
class DeprecatedRssFeed(feeds.Feed):
link = "/blog/"
title = 'My blog'
def items(self):
return Entry.objects.all()
def item_link(self, item):
return "/blog/%s/" % item.pk

10
tests/regressiontests/syndication/fixtures/feeddata.json
View File

@ -30,5 +30,13 @@
"title": "A & B < C > D",
"date": "2008-01-03 13:30:00"
}
},
{
"model": "syndication.article",
"pk": 1,
"fields": {
"title": "My first article",
"entry": "1"
}
}
]
]

19
tests/regressiontests/syndication/models.py
View File

@ -3,6 +3,21 @@ from django.db import models
class Entry(models.Model):
title = models.CharField(max_length=200)
date = models.DateTimeField()
class Meta:
ordering = ('date',)
def __unicode__(self):
return self.title
return self.title
def get_absolute_url(self):
return "/blog/%s/" % self.pk
class Article(models.Model):
title = models.CharField(max_length=200)
entry = models.ForeignKey(Entry)
def __unicode__(self):
return self.title

1
tests/regressiontests/syndication/templates/syndication/description.html Normal file
View File

@ -0,0 +1 @@
Description in your templates: {{ obj }}

1
tests/regressiontests/syndication/templates/syndication/title.html Normal file
View File

@ -0,0 +1 @@
Title in your templates: {{ obj }}

287
tests/regressiontests/syndication/tests.py
View File

@ -1,17 +1,17 @@
# -*- coding: utf-8 -*-
import datetime
from xml.dom import minidom
from django.contrib.syndication import feeds, views
from django.core.exceptions import ImproperlyConfigured
from django.test import TestCase
from django.test.client import Client
from django.utils import tzinfo
from models import Entry
from xml.dom import minidom
try:
set
except NameError:
from sets import Set as set
class SyndicationFeedTest(TestCase):
class FeedTestCase(TestCase):
fixtures = ['feeddata.json']
def assertChildNodes(self, elem, expected):
@ -19,101 +19,300 @@ class SyndicationFeedTest(TestCase):
expected = set(expected)
self.assertEqual(actual, expected)
def test_rss_feed(self):
response = self.client.get('/syndication/feeds/rss/')
def assertChildNodeContent(self, elem, expected):
for k, v in expected.items():
self.assertEqual(
elem.getElementsByTagName(k)[0].firstChild.wholeText, v)
def assertCategories(self, elem, expected):
self.assertEqual(set(i.firstChild.wholeText for i in elem.childNodes if i.nodeName == 'category'), set(expected));
######################################
# Feed view
######################################
class SyndicationFeedTest(FeedTestCase):
"""
Tests for the high-level syndication feed framework.
"""
def test_rss2_feed(self):
"""
Test the structure and content of feeds generated by Rss201rev2Feed.
"""
response = self.client.get('/syndication/rss2/')
doc = minidom.parseString(response.content)
# Making sure there's only 1 `rss` element and that the correct
# RSS version was specified.
feed_elem = doc.getElementsByTagName('rss')
self.assertEqual(len(feed_elem), 1)
feed = feed_elem[0]
self.assertEqual(feed.getAttribute('version'), '2.0')
# Making sure there's only one `channel` element w/in the
# `rss` element.
chan_elem = feed.getElementsByTagName('channel')
self.assertEqual(len(chan_elem), 1)
chan = chan_elem[0]
self.assertChildNodes(chan, ['title', 'link', 'description', 'language', 'lastBuildDate', 'item'])
self.assertChildNodes(chan, ['title', 'link', 'description', 'language', 'lastBuildDate', 'item', 'atom:link', 'ttl', 'copyright', 'category'])
self.assertChildNodeContent(chan, {
'title': 'My blog',
'description': 'A more thorough description of my blog.',
'link': 'http://example.com/blog/',
'language': 'en',
'lastBuildDate': 'Thu, 03 Jan 2008 13:30:00 -0600',
#'atom:link': '',
'ttl': '600',
'copyright': 'Copyright (c) 2007, Sally Smith',
})
self.assertCategories(chan, ['python', 'django']);
# Ensure the content of the channel is correct
self.assertChildNodeContent(chan, {
'title': 'My blog',
'link': 'http://example.com/blog/',
})
# Check feed_url is passed
self.assertEqual(
chan.getElementsByTagName('atom:link')[0].getAttribute('href'),
'http://example.com/syndication/rss2/'
)
items = chan.getElementsByTagName('item')
self.assertEqual(len(items), Entry.objects.count())
self.assertChildNodeContent(items[0], {
'title': 'My first entry',
'description': 'Overridden description: My first entry',
'link': 'http://example.com/blog/1/',
'guid': 'http://example.com/blog/1/',
'pubDate': 'Tue, 01 Jan 2008 12:30:00 -0600',
'author': 'test@example.com (Sally Smith)',
})
self.assertCategories(items[0], ['python', 'testing']);
for item in items:
self.assertChildNodes(item, ['title', 'link', 'description', 'guid'])
def test_atom_feed(self):
response = self.client.get('/syndication/feeds/atom/')
self.assertChildNodes(item, ['title', 'link', 'description', 'guid', 'category', 'pubDate', 'author'])
def test_rss091_feed(self):
"""
Test the structure and content of feeds generated by RssUserland091Feed.
"""
response = self.client.get('/syndication/rss091/')
doc = minidom.parseString(response.content)
feed = doc.firstChild
# Making sure there's only 1 `rss` element and that the correct
# RSS version was specified.
feed_elem = doc.getElementsByTagName('rss')
self.assertEqual(len(feed_elem), 1)
feed = feed_elem[0]
self.assertEqual(feed.getAttribute('version'), '0.91')
# Making sure there's only one `channel` element w/in the
# `rss` element.
chan_elem = feed.getElementsByTagName('channel')
self.assertEqual(len(chan_elem), 1)
chan = chan_elem[0]
self.assertChildNodes(chan, ['title', 'link', 'description', 'language', 'lastBuildDate', 'item', 'atom:link', 'ttl', 'copyright', 'category'])
# Ensure the content of the channel is correct
self.assertChildNodeContent(chan, {
'title': 'My blog',
'link': 'http://example.com/blog/',
})
self.assertCategories(chan, ['python', 'django'])
# Check feed_url is passed
self.assertEqual(
chan.getElementsByTagName('atom:link')[0].getAttribute('href'),
'http://example.com/syndication/rss091/'
)
items = chan.getElementsByTagName('item')
self.assertEqual(len(items), Entry.objects.count())
self.assertChildNodeContent(items[0], {
'title': 'My first entry',
'description': 'Overridden description: My first entry',
'link': 'http://example.com/blog/1/',
})
for item in items:
self.assertChildNodes(item, ['title', 'link', 'description'])
self.assertCategories(item, [])
def test_atom_feed(self):
"""
Test the structure and content of feeds generated by Atom1Feed.
"""
response = self.client.get('/syndication/atom/')
feed = minidom.parseString(response.content).firstChild
self.assertEqual(feed.nodeName, 'feed')
self.assertEqual(feed.getAttribute('xmlns'), 'http://www.w3.org/2005/Atom')
self.assertChildNodes(feed, ['title', 'link', 'id', 'updated', 'entry'])
self.assertEqual(feed.getAttribute('xmlns'), 'http://www.w3.org/2005/Atom')
self.assertChildNodes(feed, ['title', 'subtitle', 'link', 'id', 'updated', 'entry', 'rights', 'category', 'author'])
for link in feed.getElementsByTagName('link'):
if link.getAttribute('rel') == 'self':
self.assertEqual(link.getAttribute('href'), 'http://example.com/syndication/atom/')
entries = feed.getElementsByTagName('entry')
self.assertEqual(len(entries), Entry.objects.count())
for entry in entries:
self.assertChildNodes(entry, ['title', 'link', 'id', 'summary'])
self.assertChildNodes(entry, ['title', 'link', 'id', 'summary', 'category', 'updated', 'rights', 'author'])
summary = entry.getElementsByTagName('summary')[0]
self.assertEqual(summary.getAttribute('type'), 'html')
def test_custom_feed_generator(self):
response = self.client.get('/syndication/feeds/custom/')
doc = minidom.parseString(response.content)
feed = doc.firstChild
response = self.client.get('/syndication/custom/')
feed = minidom.parseString(response.content).firstChild
self.assertEqual(feed.nodeName, 'feed')
self.assertEqual(feed.getAttribute('django'), 'rocks')
self.assertChildNodes(feed, ['title', 'link', 'id', 'updated', 'entry', 'spam'])
self.assertChildNodes(feed, ['title', 'subtitle', 'link', 'id', 'updated', 'entry', 'spam', 'rights', 'category', 'author'])
entries = feed.getElementsByTagName('entry')
self.assertEqual(len(entries), Entry.objects.count())
for entry in entries:
self.assertEqual(entry.getAttribute('bacon'), 'yum')
self.assertChildNodes(entry, ['title', 'link', 'id', 'summary', 'ministry'])
self.assertChildNodes(entry, ['title', 'link', 'id', 'summary', 'ministry', 'rights', 'author', 'updated', 'category'])
summary = entry.getElementsByTagName('summary')[0]
self.assertEqual(summary.getAttribute('type'), 'html')
def test_complex_base_url(self):
"""
Tests that that the base url for a complex feed doesn't raise a 500
exception.
"""
response = self.client.get('/syndication/feeds/complex/')
self.assertEquals(response.status_code, 404)
def test_title_escaping(self):
"""
Tests that titles are escaped correctly in RSS feeds.
"""
response = self.client.get('/syndication/feeds/rss/')
response = self.client.get('/syndication/rss2/')
doc = minidom.parseString(response.content)
for item in doc.getElementsByTagName('item'):
link = item.getElementsByTagName('link')[0]
if link.firstChild.wholeText == 'http://example.com/blog/4/':
title = item.getElementsByTagName('title')[0]
self.assertEquals(title.firstChild.wholeText, u'A &amp; B &lt; C &gt; D')
def test_naive_datetime_conversion(self):
"""
Test that datetimes are correctly converted to the local time zone.
"""
# Naive date times passed in get converted to the local time zone, so
# check the recived zone offset against the local offset.
response = self.client.get('/syndication/feeds/naive-dates/')
response = self.client.get('/syndication/naive-dates/')
doc = minidom.parseString(response.content)
updated = doc.getElementsByTagName('updated')[0].firstChild.wholeText
updated = doc.getElementsByTagName('updated')[0].firstChild.wholeText
tz = tzinfo.LocalTimezone(datetime.datetime.now())
now = datetime.datetime.now(tz)
self.assertEqual(updated[-6:], str(now)[-6:])
def test_aware_datetime_conversion(self):
"""
Test that datetimes with timezones don't get trodden on.
"""
response = self.client.get('/syndication/feeds/aware-dates/')
response = self.client.get('/syndication/aware-dates/')
doc = minidom.parseString(response.content)
updated = doc.getElementsByTagName('updated')[0].firstChild.wholeText
self.assertEqual(updated[-6:], '+00:42')
def test_feed_url(self):
"""
Test that the feed_url can be overridden.
"""
response = self.client.get('/syndication/feedurl/')
doc = minidom.parseString(response.content)
for link in doc.getElementsByTagName('link'):
if link.getAttribute('rel') == 'self':
self.assertEqual(link.getAttribute('href'), 'http://example.com/customfeedurl/')
def test_item_link_error(self):
"""
Test that a ImproperlyConfigured is raised if no link could be found
for the item(s).
"""
self.assertRaises(ImproperlyConfigured,
self.client.get,
'/syndication/articles/')
def test_template_feed(self):
"""
Test that the item title and description can be overridden with
templates.
"""
response = self.client.get('/syndication/template/')
doc = minidom.parseString(response.content)
feed = doc.getElementsByTagName('rss')[0]
chan = feed.getElementsByTagName('channel')[0]
items = chan.getElementsByTagName('item')
self.assertChildNodeContent(items[0], {
'title': 'Title in your templates: My first entry',
'description': 'Description in your templates: My first entry',
'link': 'http://example.com/blog/1/',
})
def test_add_domain(self):
"""
Test add_domain() prefixes domains onto the correct URLs.
"""
self.assertEqual(
views.add_domain('example.com', '/foo/?arg=value'),
'http://example.com/foo/?arg=value'
)
self.assertEqual(
views.add_domain('example.com', 'http://djangoproject.com/doc/'),
'http://djangoproject.com/doc/'
)
self.assertEqual(
views.add_domain('example.com', 'https://djangoproject.com/doc/'),
'https://djangoproject.com/doc/'
)
self.assertEqual(
views.add_domain('example.com', 'mailto:uhoh@djangoproject.com'),
'mailto:uhoh@djangoproject.com'
)
######################################
# Deprecated feeds
######################################
class DeprecatedSyndicationFeedTest(FeedTestCase):
"""
Tests for the deprecated API (feed() view and the feed_dict etc).
"""
def test_empty_feed_dict(self):
"""
Test that an empty feed_dict raises a 404.
"""
response = self.client.get('/syndication/depr-feeds-empty/aware-dates/')
self.assertEquals(response.status_code, 404)
def test_nonexistent_slug(self):
"""
Test that a non-existent slug raises a 404.
"""
response = self.client.get('/syndication/depr-feeds/foobar/')
self.assertEquals(response.status_code, 404)
def test_rss_feed(self):
"""
A simple test for Rss201rev2Feed feeds generated by the deprecated
system.
"""
response = self.client.get('/syndication/depr-feeds/rss/')
doc = minidom.parseString(response.content)
feed = doc.getElementsByTagName('rss')[0]
self.assertEqual(feed.getAttribute('version'), '2.0')
chan = feed.getElementsByTagName('channel')[0]
self.assertChildNodes(chan, ['title', 'link', 'description', 'language', 'lastBuildDate', 'item', 'atom:link'])
items = chan.getElementsByTagName('item')
self.assertEqual(len(items), Entry.objects.count())
def test_complex_base_url(self):
"""
Tests that the base url for a complex feed doesn't raise a 500
exception.
"""
response = self.client.get('/syndication/depr-feeds/complex/')
self.assertEquals(response.status_code, 404)

28
tests/regressiontests/syndication/urls.py
View File

@ -1,14 +1,24 @@
from django.conf.urls.defaults import *
import feeds
from django.conf.urls.defaults import patterns
feed_dict = {
'complex': feeds.ComplexFeed,
'rss': feeds.TestRssFeed,
'atom': feeds.TestAtomFeed,
'custom': feeds.TestCustomFeed,
'naive-dates': feeds.NaiveDatesFeed,
'aware-dates': feeds.TZAwareDatesFeed,
'complex': feeds.DeprecatedComplexFeed,
'rss': feeds.DeprecatedRssFeed,
}
urlpatterns = patterns('',
(r'^feeds/(?P<url>.*)/$', 'django.contrib.syndication.views.feed', {'feed_dict': feed_dict})
urlpatterns = patterns('django.contrib.syndication.views',
(r'^complex/(?P<foo>.*)/$', feeds.ComplexFeed()),
(r'^rss2/$', feeds.TestRss2Feed()),
(r'^rss091/$', feeds.TestRss091Feed()),
(r'^atom/$', feeds.TestAtomFeed()),
(r'^custom/$', feeds.TestCustomFeed()),
(r'^naive-dates/$', feeds.NaiveDatesFeed()),
(r'^aware-dates/$', feeds.TZAwareDatesFeed()),
(r'^feedurl/$', feeds.TestFeedUrlFeed()),
(r'^articles/$', feeds.ArticlesFeed()),
(r'^template/$', feeds.TemplateFeed()),
(r'^depr-feeds/(?P<url>.*)/$', 'feed', {'feed_dict': feed_dict}),
(r'^depr-feeds-empty/(?P<url>.*)/$', 'feed', {'feed_dict': None}),
)

63
tests/regressiontests/utils/feedgenerator.py Normal file
View File

@ -0,0 +1,63 @@
import datetime
from unittest import TestCase
from django.utils import feedgenerator, tzinfo
class FeedgeneratorTest(TestCase):
"""
Tests for the low-level syndication feed framework.
"""
def test_get_tag_uri(self):
"""
Test get_tag_uri() correctly generates TagURIs.
"""
self.assertEqual(
feedgenerator.get_tag_uri('http://example.org/foo/bar#headline', datetime.date(2004, 10, 25)),
u'tag:example.org,2004-10-25:/foo/bar/headline')
def test_get_tag_uri_with_port(self):
"""
Test that get_tag_uri() correctly generates TagURIs from URLs with port
numbers.
"""
self.assertEqual(
feedgenerator.get_tag_uri('http://www.example.org:8000/2008/11/14/django#headline', datetime.datetime(2008, 11, 14, 13, 37, 0)),
u'tag:www.example.org,2008-11-14:/2008/11/14/django/headline')
def test_rfc2822_date(self):
"""
Test rfc2822_date() correctly formats datetime objects.
"""
self.assertEqual(
feedgenerator.rfc2822_date(datetime.datetime(2008, 11, 14, 13, 37, 0)),
"Fri, 14 Nov 2008 13:37:00 -0000"
)
def test_rfc2822_date_with_timezone(self):
"""
Test rfc2822_date() correctly formats datetime objects with tzinfo.
"""
self.assertEqual(
feedgenerator.rfc2822_date(datetime.datetime(2008, 11, 14, 13, 37, 0, tzinfo=tzinfo.FixedOffset(datetime.timedelta(minutes=60)))),
"Fri, 14 Nov 2008 13:37:00 +0100"
)
def test_rfc3339_date(self):
"""
Test rfc3339_date() correctly formats datetime objects.
"""
self.assertEqual(
feedgenerator.rfc3339_date(datetime.datetime(2008, 11, 14, 13, 37, 0)),
"2008-11-14T13:37:00Z"
)
def test_rfc3339_date_with_timezone(self):
"""
Test rfc3339_date() correctly formats datetime objects with tzinfo.
"""
self.assertEqual(
feedgenerator.rfc3339_date(datetime.datetime(2008, 11, 14, 13, 37, 0, tzinfo=tzinfo.FixedOffset(datetime.timedelta(minutes=120)))),
"2008-11-14T13:37:00+02:00"
)

1
tests/regressiontests/utils/tests.py
View File

@ -31,6 +31,7 @@ __test__ = {
}
from dateformat import *
from feedgenerator import *
from termcolors import *
class TestUtilsHtml(TestCase):