X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/a991afcc5a1f18bbe332359f2c3c10be0ca2a11e..dbfa7041eadc465c1aaddac3fca41624cbed852d:/contrib/penfield/models.py

diff --git a/contrib/penfield/models.py b/contrib/penfield/models.py
index 0e5bce0..98dcdd5 100644
--- a/contrib/penfield/models.py
+++ b/contrib/penfield/models.py
@@ -1,13 +1,292 @@
-from django.db import models
 from django.conf import settings
-from philo.models import Tag, Titled, Entity, MultiView, Page, register_value_model
-from philo.exceptions import ViewCanNotProvideSubpath
-from django.conf.urls.defaults import url, patterns
-from django.core.urlresolvers import reverse
+from django.conf.urls.defaults import url, patterns, include
+from django.contrib.sites.models import Site, RequestSite
+from django.contrib.syndication.views import add_domain
+from django.db import models
 from django.http import Http404, HttpResponse
-from datetime import datetime
-from philo.contrib.penfield.utils import paginate
+from django.template import RequestContext, Template as DjangoTemplate
+from django.utils import feedgenerator, tzinfo
+from django.utils.datastructures import SortedDict
+from django.utils.encoding import smart_unicode, force_unicode
+from django.utils.html import escape
+from datetime import date, datetime
 from philo.contrib.penfield.validators import validate_pagination_count
+from philo.exceptions import ViewCanNotProvideSubpath
+from philo.models import Tag, Titled, Entity, MultiView, Page, register_value_model, TemplateField, Template
+from philo.utils import paginate
+try:
+	import mimeparse
+except:
+	mimeparse = None
+
+
+ATOM = feedgenerator.Atom1Feed.mime_type
+RSS = feedgenerator.Rss201rev2Feed.mime_type
+FEEDS = SortedDict([
+	(ATOM, feedgenerator.Atom1Feed),
+	(RSS, feedgenerator.Rss201rev2Feed),
+])
+FEED_CHOICES = (
+	(ATOM, "Atom"),
+	(RSS, "RSS"),
+)
+
+
+class FeedView(MultiView):
+	"""
+	The FeedView expects to handle a number of different feeds for the
+	same object - i.e. patterns for a blog to handle all entries or
+	just entries for a certain year/month/day.
+	
+	This class would subclass django.contrib.syndication.views.Feed, but
+	that would make it callable, which causes problems.
+	"""
+	feed_type = models.CharField(max_length=50, choices=FEED_CHOICES, default=ATOM)
+	feed_suffix = models.CharField(max_length=255, blank=False, default="feed")
+	feeds_enabled = models.BooleanField(default=True)
+	
+	item_title_template = models.ForeignKey(Template, blank=True, null=True, related_name="%(app_label)s_%(class)s_title_related")
+	item_description_template = models.ForeignKey(Template, blank=True, null=True, related_name="%(app_label)s_%(class)s_description_related")
+	
+	item_context_var = 'items'
+	object_attr = 'object'
+	
+	description = ""
+	
+	def feed_patterns(self, base, get_items_attr, page_attr, reverse_name):
+		"""
+		Given the name to be used to reverse this view and the names of
+		the attributes for the function that fetches the objects, returns
+		patterns suitable for inclusion in urlpatterns.
+		"""
+		urlpatterns = patterns('')
+		if self.feeds_enabled:
+			feed_reverse_name = "%s_feed" % reverse_name
+			feed_view = self.feed_view(get_items_attr, feed_reverse_name)
+			feed_pattern = r'%s%s%s$' % (base, (base and base[-1] != "^") and "/" or "", self.feed_suffix)
+			urlpatterns += patterns('',
+				url(feed_pattern, feed_view, name=feed_reverse_name),
+			)
+		urlpatterns += patterns('',
+			url(r"%s$" % base, self.page_view(get_items_attr, page_attr), name=reverse_name)
+		)
+		return urlpatterns
+	
+	def get_object(self, request, **kwargs):
+		return getattr(self, self.object_attr)
+	
+	def feed_view(self, get_items_attr, reverse_name):
+		"""
+		Returns a view function that renders a list of items as a feed.
+		"""
+		get_items = callable(get_items_attr) and get_items_attr or getattr(self, get_items_attr)
+		
+		def inner(request, extra_context=None, *args, **kwargs):
+			obj = self.get_object(request, *args, **kwargs)
+			feed = self.get_feed(obj, request, reverse_name)
+			items, xxx = get_items(request, extra_context=extra_context, *args, **kwargs)
+			self.populate_feed(feed, items, request)
+			
+			response = HttpResponse(mimetype=feed.mime_type)
+			feed.write(response, 'utf-8')
+			return response
+		
+		return inner
+	
+	def page_view(self, get_items_attr, page_attr):
+		"""
+		Returns a view function that renders a list of items as a page.
+		"""
+		get_items = callable(get_items_attr) and get_items_attr or getattr(self, get_items_attr)
+		page = isinstance(page_attr, Page) and page_attr or getattr(self, page_attr)
+		
+		def inner(request, extra_context=None, *args, **kwargs):
+			items, extra_context = get_items(request, extra_context=extra_context, *args, **kwargs)
+			items, item_context = self.process_page_items(request, items)
+			
+			context = self.get_context()
+			context.update(extra_context or {})
+			context.update(item_context or {})
+			
+			return page.render_to_response(request, extra_context=context)
+		return inner
+	
+	def process_page_items(self, request, items):
+		"""
+		Hook for handling any extra processing of items based on a
+		request, such as pagination or searching. This method is
+		expected to return a list of items and a dictionary to be
+		added to the page context.
+		"""
+		item_context = {
+			self.item_context_var: items
+		}
+		return items, item_context
+	
+	def get_feed_type(self, request):
+		feed_type = self.feed_type
+		if feed_type not in FEEDS:
+			feed_type = FEEDS.keys()[0]
+		accept = request.META.get('HTTP_ACCEPT')
+		if accept and feed_type not in accept and "*/*" not in accept and "%s/*" % feed_type.split("/")[0] not in accept:
+			# Wups! They aren't accepting the chosen format. Is there another format we can use?
+			if mimeparse:
+				feed_type = mimeparse.best_match(FEEDS.keys(), accept)
+			else:
+				for feed_type in FEEDS.keys():
+					if feed_type in accept or "%s/*" % feed_type.split("/")[0] in accept:
+						break
+				else:
+					feed_type = None
+			if not feed_type:
+				# See RFC 2616
+				return HttpResponse(status=406)
+		return FEEDS[feed_type]
+	
+	def get_feed(self, obj, request, reverse_name):
+		"""
+		Returns an unpopulated feedgenerator.DefaultFeed object for this object.
+		"""
+		try:
+			current_site = Site.objects.get_current()
+		except Site.DoesNotExist:
+			current_site = RequestSite(request)
+		
+		feed_type = self.get_feed_type(request)
+		node = request.node
+		link = node.get_absolute_url(with_domain=True, request=request, secure=request.is_secure())
+		
+		feed = 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 node.construct_url(node.subpath, with_domain=True, request=request, secure=request.is_secure()),
+				request.is_secure()
+			),
+			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)
+		)
+		return feed
+	
+	def populate_feed(self, feed, items, request):
+		if self.item_title_template:
+			title_template = DjangoTemplate(self.item_title_template.code)
+		else:
+			title_template = None
+		if self.item_description_template:
+			description_template = DjangoTemplate(self.item_description_template.code)
+		else:
+			description_template = None
+		
+		node = request.node
+		try:
+			current_site = Site.objects.get_current()
+		except Site.DoesNotExist:
+			current_site = RequestSite(request)
+		
+		for item in items:
+			if title_template is not None:
+				title = title_template.render(RequestContext(request, {'obj': item}))
+			else:
+				title = self.__get_dynamic_attr('item_title', item)
+			if description_template is not None:
+				description = description_template.render(RequestContext(request, {'obj': item}))
+			else:
+				description = self.__get_dynamic_attr('item_description', item)
+			
+			link = node.construct_url(self.reverse(obj=item), with_domain=True, request=request, secure=request.is_secure())
+			
+			enc = None
+			enc_url = self.__get_dynamic_attr('item_enclosure_url', item)
+			if enc_url:
+				enc = feedgenerator.Enclosure(
+					url = smart_unicode(add_domain(
+							current_site.domain,
+							enc_url,
+							request.is_secure()
+					)),
+					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:
+				ltz = tzinfo.LocalTimezone(pubdate)
+				pubdate = pubdate.replace(tzinfo=ltz)
+			
+			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)
+			)
+	
+	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 item_title(self, item):
+		return escape(force_unicode(item))
+	
+	def item_description(self, item):
+		return force_unicode(item)
+	
+	class Meta:
+		abstract=True
 
 
 class Blog(Entity, Titled):
@@ -15,28 +294,39 @@ class Blog(Entity, Titled):
 	def entry_tags(self):
 		""" Returns a QuerySet of Tags that are used on any entries in this blog. """
 		return Tag.objects.filter(blogentries__blog=self).distinct()
+	
+	@property
+	def entry_dates(self):
+		dates = {'year': self.entries.dates('date', 'year', order='DESC'), 'month': self.entries.dates('date', 'month', order='DESC'), 'day': self.entries.dates('date', 'day', order='DESC')}
+		return dates
 
 
 register_value_model(Blog)
 
 
 class BlogEntry(Entity, Titled):
-	blog = models.ForeignKey(Blog, related_name='entries')
+	blog = models.ForeignKey(Blog, related_name='entries', blank=True, null=True)
 	author = models.ForeignKey(getattr(settings, 'PHILO_PERSON_MODULE', 'auth.User'), related_name='blogentries')
-	date = models.DateTimeField(default=datetime.now)
+	date = models.DateTimeField(default=None)
 	content = models.TextField()
 	excerpt = models.TextField(blank=True, null=True)
 	tags = models.ManyToManyField(Tag, related_name='blogentries', blank=True, null=True)
 	
+	def save(self, *args, **kwargs):
+		if self.date is None:
+			self.date = datetime.now()
+		super(BlogEntry, self).save(*args, **kwargs)
+	
 	class Meta:
 		ordering = ['-date']
 		verbose_name_plural = "blog entries"
+		get_latest_by = "date"
 
 
 register_value_model(BlogEntry)
 
 
-class BlogView(MultiView):
+class BlogView(FeedView):
 	ENTRY_PERMALINK_STYLE_CHOICES = (
 		('D', 'Year, month, and day'),
 		('M', 'Year and month'),
@@ -49,6 +339,7 @@ class BlogView(MultiView):
 	
 	index_page = models.ForeignKey(Page, related_name='blog_index_related')
 	entry_page = models.ForeignKey(Page, related_name='blog_entry_related')
+	# TODO: entry_archive is misleading. Rename to ymd_page or timespan_page.
 	entry_archive_page = models.ForeignKey(Page, related_name='blog_entry_archive_related', null=True, blank=True)
 	tag_page = models.ForeignKey(Page, related_name='blog_tag_related')
 	tag_archive_page = models.ForeignKey(Page, related_name='blog_tag_archive_related', null=True, blank=True)
@@ -58,159 +349,233 @@ class BlogView(MultiView):
 	entry_permalink_base = models.CharField(max_length=255, blank=False, default='entries')
 	tag_permalink_base = models.CharField(max_length=255, blank=False, default='tags')
 	
+	item_context_var = 'entries'
+	object_attr = 'blog'
+	
 	def __unicode__(self):
 		return u'BlogView for %s' % self.blog.title
 	
-	def get_subpath(self, obj):
+	def get_reverse_params(self, obj):
 		if isinstance(obj, BlogEntry):
 			if obj.blog == self.blog:
-				entry_view_args = {'slug': obj.slug}
+				kwargs = {'slug': obj.slug}
 				if self.entry_permalink_style in 'DMY':
-					entry_view_args.update({'year': str(obj.date.year).zfill(4)})
+					kwargs.update({'year': str(obj.date.year).zfill(4)})
 					if self.entry_permalink_style in 'DM':
-						entry_view_args.update({'month': str(obj.date.month).zfill(2)})
+						kwargs.update({'month': str(obj.date.month).zfill(2)})
 						if self.entry_permalink_style == 'D':
-							entry_view_args.update({'day': str(obj.date.day).zfill(2)})
-				return reverse(self.entry_view, urlconf=self, kwargs=entry_view_args)
-		elif isinstance(obj, Tag):
-			if obj in self.blog.entry_tags:
-				return reverse(self.tag_view, urlconf=self, kwargs={'tag_slugs': obj.slug})
+							kwargs.update({'day': str(obj.date.day).zfill(2)})
+				return self.entry_view, [], kwargs
+		elif isinstance(obj, Tag) or (isinstance(obj, models.query.QuerySet) and obj.model == Tag and obj):
+			if isinstance(obj, Tag):
+				obj = [obj]
+			slugs = [tag.slug for tag in obj if tag in self.get_tag_queryset()]
+			if slugs:
+				return 'entries_by_tag', [], {'tag_slugs': "/".join(slugs)}
+		elif isinstance(obj, (date, datetime)):
+			kwargs = {
+				'year': str(obj.year).zfill(4),
+				'month': str(obj.month).zfill(2),
+				'day': str(obj.day).zfill(2)
+			}
+			return 'entries_by_day', [], kwargs
 		raise ViewCanNotProvideSubpath
 	
 	@property
 	def urlpatterns(self):
-		base_patterns = patterns('',
-			url(r'^$', self.index_view),
-			url((r'^(?:%s)/?$' % self.tag_permalink_base), self.tag_archive_view),
-			url((r'^(?:%s)/(?P<tag_slugs>[-\w]+[-+/\w]*)/?$' % self.tag_permalink_base), self.tag_view)
-		)
+		urlpatterns = self.feed_patterns(r'^', 'get_all_entries', 'index_page', 'index') +\
+			self.feed_patterns(r'^%s/(?P<tag_slugs>[-\w]+[-+/\w]*)$' % self.tag_permalink_base, 'get_entries_by_tag', 'tag_page', 'entries_by_tag')
+		
+		if self.tag_archive_page:
+			urlpatterns += patterns('',
+				url((r'^%s$' % self.tag_permalink_base), self.tag_archive_view, name='tag_archive')
+			)
+		
+		if self.entry_archive_page:
+			if self.entry_permalink_style in 'DMY':
+				urlpatterns += self.feed_patterns(r'^(?P<year>\d{4})', 'get_entries_by_ymd', 'entry_archive_page', 'entries_by_year')
+				if self.entry_permalink_style in 'DM':
+					urlpatterns += self.feed_patterns(r'^(?P<year>\d{4})/(?P<month>\d{2})', 'get_entries_by_ymd', 'entry_archive_page', 'entries_by_month')
+					if self.entry_permalink_style == 'D':
+						urlpatterns += self.feed_patterns(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})', 'get_entries_by_ymd', 'entry_archive_page', 'entries_by_day')
+		
 		if self.entry_permalink_style == 'D':
-			entry_patterns = patterns('',
-				url(r'^(?P<year>\d{4})/?$', self.entry_archive_view),
-				url(r'^(?P<year>\d{4})/(?P<month>\d{2})/?$', self.entry_archive_view),
-				url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/?$', self.entry_archive_view),
-				url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[-\w]+)/?$', self.entry_view)
+			urlpatterns += patterns('',
+				url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[-\w]+)$', self.entry_view)
 			)
 		elif self.entry_permalink_style == 'M':
-			entry_patterns = patterns('',
-				url(r'^(?P<year>\d{4})/?$', self.entry_archive_view),
-				url(r'^(?P<year>\d{4})/(?P<month>\d{2})/?$', self.entry_archive_view),
-				url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<slug>[-\w]+)/?$', self.entry_view)
+			urlpatterns += patterns('',
+				url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<slug>[-\w]+)$', self.entry_view)
 			)
 		elif self.entry_permalink_style == 'Y':
-			entry_patterns = patterns('',
-				url(r'^(?P<year>\d{4})/?$', self.entry_archive_view),
-				url(r'^(?P<year>\d{4})/(?P<slug>[-\w]+)/?$', self.entry_view)
+			urlpatterns += patterns('',
+				url(r'^(?P<year>\d{4})/(?P<slug>[-\w]+)$', self.entry_view)
 			)
 		elif self.entry_permalink_style == 'B':
-			entry_patterns = patterns('',
-				url((r'^(?:%s)/?$' % self.entry_permalink_base), self.entry_archive_view),
-				url((r'^(?:%s)/(?P<slug>[-\w]+)/?$' % self.entry_permalink_base), self.entry_view)
+			urlpatterns += patterns('',
+				url((r'^%s/(?P<slug>[-\w]+)$' % self.entry_permalink_base), self.entry_view)
 			)
 		else:
-			entry_patterns = patterns('',
-				url(r'^(?P<slug>[-\w]+)/?$', self.entry_view)
+			urlpatterns = patterns('',
+				url(r'^(?P<slug>[-\w]+)$', self.entry_view)
 			)
-		return base_patterns + entry_patterns
+		return urlpatterns
 	
-	def index_view(self, request, node=None, extra_context=None):
-		entries = self.blog.entries.all()
-		if self.entries_per_page:
-			paginated_page = paginate(request, entries, self.entries_per_page)
-			entries = paginated_page.object_list
-		else:
-			paginated_page = None
-		context = {}
-		context.update(extra_context or {})
-		context.update({'blog': self.blog, 'entries': entries, 'paginated_page': paginated_page})
-		return self.index_page.render_to_response(node, request, extra_context=context)
+	def get_context(self):
+		return {'blog': self.blog}
+	
+	def get_entry_queryset(self):
+		return self.blog.entries.all()
+	
+	def get_tag_queryset(self):
+		return self.blog.entry_tags
+	
+	def get_all_entries(self, request, extra_context=None):
+		return self.get_entry_queryset(), extra_context
 	
-	def entry_view(self, request, slug, year=None, month=None, day=None, node=None, extra_context=None):
-		entries = self.blog.entries.all()
+	def get_entries_by_ymd(self, request, year=None, month=None, day=None, extra_context=None):
+		if not self.entry_archive_page:
+			raise Http404
+		entries = self.get_entry_queryset()
 		if year:
 			entries = entries.filter(date__year=year)
 		if month:
 			entries = entries.filter(date__month=month)
 		if day:
 			entries = entries.filter(date__day=day)
-		try:
-			entry = entries.get(slug=slug)
-		except:
-			raise Http404
-		context = {}
-		context.update(extra_context or {})
-		context.update({'blog': self.blog, 'entry': entry})
-		return self.entry_page.render_to_response(node, request, extra_context=context)
+		
+		context = extra_context or {}
+		context.update({'year': year, 'month': month, 'day': day})
+		return entries, context
 	
-	def entry_archive_view(self, request, year=None, month=None, day=None, node=None, extra_context=None):
-		if not self.entry_archive_page:
+	def get_entries_by_tag(self, request, tag_slugs, extra_context=None):
+		tag_slugs = tag_slugs.replace('+', '/').split('/')
+		tags = self.get_tag_queryset().filter(slug__in=tag_slugs)
+		
+		if not tags:
 			raise Http404
-		entries = self.blog.entries.all()
+		
+		# Raise a 404 on an incorrect slug.
+		found_slugs = [tag.slug for tag in tags]
+		for slug in tag_slugs:
+			if slug and slug not in found_slugs:
+				raise Http404
+
+		entries = self.get_entry_queryset()
+		for tag in tags:
+			entries = entries.filter(tags=tag)
+		
+		context = extra_context or {}
+		context.update({'tags': tags})
+		
+		return entries, context
+	
+	def entry_view(self, request, slug, year=None, month=None, day=None, extra_context=None):
+		entries = self.get_entry_queryset()
 		if year:
 			entries = entries.filter(date__year=year)
 		if month:
 			entries = entries.filter(date__month=month)
 		if day:
 			entries = entries.filter(date__day=day)
-		if self.entries_per_page:
-			paginated_page = paginate(request, entries, self.entries_per_page)
-			entries = paginated_page.object_list
-		else:
-			paginated_page = None
-		context = {}
+		try:
+			entry = entries.get(slug=slug)
+		except:
+			raise Http404
+		context = self.get_context()
 		context.update(extra_context or {})
-		context.update({'blog': self.blog, 'year': year, 'month': month, 'day': day, 'entries': entries, 'paginated_page': paginated_page})
-		return self.entry_archive_page.render_to_response(node, request, extra_context=context)
-	
-	def tag_view(self, request, tag_slugs, node=None, extra_context=None):
-		tags = []
-		for tag_slug in tag_slugs.replace('+', '/').split('/'):
-			if tag_slug: # ignore blank slugs, handles for multiple consecutive separators (+ or /)
-				try:
-					tag = self.blog.entry_tags.get(slug=tag_slug)
-				except:
-					raise Http404
-				tags.append(tag)
-		if len(tags) <= 0:
+		context.update({'entry': entry})
+		return self.entry_page.render_to_response(request, extra_context=context)
+	
+	def tag_archive_view(self, request, extra_context=None):
+		if not self.tag_archive_page:
 			raise Http404
+		context = self.get_context()
+		context.update(extra_context or {})
+		context.update({
+			'tags': self.get_tag_queryset()
+		})
+		return self.tag_archive_page.render_to_response(request, extra_context=context)
+	
+	def feed_view(self, get_items_attr, reverse_name):
+		get_items = callable(get_items_attr) and get_items_attr or getattr(self, get_items_attr)
 		
-		entries = self.blog.entries.all()
-		for tag in tags:
-			entries = entries.filter(tags=tag)
-		if entries.count() <= 0:
-			raise Http404
+		def inner(request, extra_context=None, *args, **kwargs):
+			obj = self.get_object(request, *args, **kwargs)
+			feed = self.get_feed(obj, request, reverse_name)
+			items, extra_context = get_items(request, extra_context=extra_context, *args, **kwargs)
+			self.populate_feed(feed, items, request)
+			
+			if 'tags' in extra_context:
+				tags = extra_context['tags']
+				feed.feed['link'] = request.node.construct_url(self.reverse(obj=tags), with_domain=True, request=request, secure=request.is_secure())
+			else:
+				tags = obj.entry_tags
+			
+			feed.feed['categories'] = [tag.name for tag in tags]
+			
+			response = HttpResponse(mimetype=feed.mime_type)
+			feed.write(response, 'utf-8')
+			return response
 		
+		return inner
+	
+	def process_page_items(self, request, items):
 		if self.entries_per_page:
-			paginated_page = paginate(request, entries, self.entries_per_page)
-			entries = paginated_page.object_list
+			page_num = request.GET.get('page', 1)
+			paginator, paginated_page, items = paginate(items, self.entries_per_page, page_num)
+			item_context = {
+				'paginator': paginator,
+				'paginated_page': paginated_page,
+				self.item_context_var: items
+			}
 		else:
-			paginated_page = None
-		context = {}
-		context.update(extra_context or {})
-		context.update({'blog': self.blog, 'tags': tags, 'entries': entries, 'paginated_page': paginated_page})
-		return self.tag_page.render_to_response(node, request, extra_context=context)
+			item_context = {
+				self.item_context_var: items
+			}
+		return items, item_context
 	
-	def tag_archive_view(self, request, node=None, extra_context=None):
-		if not self.tag_archive_page:
-			raise Http404
-		context = {}
-		context.update(extra_context or {})
-		context.update({'blog': self.blog})
-		return self.tag_archive_page.render_to_response(node, request, extra_context=context)
+	def title(self, obj):
+		return obj.title
+	
+	def item_title(self, item):
+		return item.title
+	
+	def item_description(self, item):
+		return item.content
+	
+	def item_author_name(self, item):
+		return item.author.get_full_name()
+	
+	def item_pubdate(self, item):
+		return item.date
+	
+	def item_categories(self, item):
+		return [tag.name for tag in item.tags.all()]
 
 
 class Newsletter(Entity, Titled):
 	pass
 
 
+register_value_model(Newsletter)
+
+
 class NewsletterArticle(Entity, Titled):
 	newsletter = models.ForeignKey(Newsletter, related_name='articles')
 	authors = models.ManyToManyField(getattr(settings, 'PHILO_PERSON_MODULE', 'auth.User'), related_name='newsletterarticles')
-	date = models.DateTimeField(default=datetime.now)
-	lede = models.TextField(null=True, blank=True)
-	full_text = models.TextField()
+	date = models.DateTimeField(default=None)
+	lede = TemplateField(null=True, blank=True, verbose_name='Summary')
+	full_text = TemplateField(db_index=True)
+	tags = models.ManyToManyField(Tag, related_name='newsletterarticles', blank=True, null=True)
+	
+	def save(self, *args, **kwargs):
+		if self.date is None:
+			self.date = datetime.now()
+		super(NewsletterArticle, self).save(*args, **kwargs)
 	
 	class Meta:
+		get_latest_by = 'date'
 		ordering = ['-date']
 		unique_together = (('newsletter', 'slug'),)
 
@@ -220,15 +585,18 @@ register_value_model(NewsletterArticle)
 
 class NewsletterIssue(Entity, Titled):
 	newsletter = models.ForeignKey(Newsletter, related_name='issues')
-	number = models.PositiveIntegerField()
-	articles = models.ManyToManyField(NewsletterArticle)
+	numbering = models.CharField(max_length=50, help_text='For example, 04.02 for volume 4, issue 2.')
+	articles = models.ManyToManyField(NewsletterArticle, related_name='issues')
 	
 	class Meta:
-		ordering = ['-number']
-		unique_together = (('newsletter', 'number'),)
+		ordering = ['-numbering']
+		unique_together = (('newsletter', 'numbering'),)
+
+
+register_value_model(NewsletterIssue)
 
 
-class NewsletterView(MultiView):
+class NewsletterView(FeedView):
 	ARTICLE_PERMALINK_STYLE_CHOICES = (
 		('D', 'Year, month, and day'),
 		('M', 'Year and month'),
@@ -248,111 +616,150 @@ class NewsletterView(MultiView):
 	article_permalink_base = models.CharField(max_length=255, blank=False, default='articles')
 	issue_permalink_base = models.CharField(max_length=255, blank=False, default='issues')
 	
-	def get_subpath(self, obj):
+	item_context_var = 'articles'
+	object_attr = 'newsletter'
+	
+	def __unicode__(self):
+		return "NewsletterView for %s" % self.newsletter.__unicode__()
+	
+	def get_reverse_params(self, obj):
 		if isinstance(obj, NewsletterArticle):
 			if obj.newsletter == self.newsletter:
-				article_view_args = {'slug': obj.slug}
+				kwargs = {'slug': obj.slug}
 				if self.article_permalink_style in 'DMY':
-					article_view_args.update({'year': str(obj.date.year).zfill(4)})
+					kwargs.update({'year': str(obj.date.year).zfill(4)})
 					if self.article_permalink_style in 'DM':
-						article_view_args.update({'month': str(obj.date.month).zfill(2)})
+						kwargs.update({'month': str(obj.date.month).zfill(2)})
 						if self.article_permalink_style == 'D':
-							article_view_args.update({'day': str(obj.date.day).zfill(2)})
-				return reverse(self.article_view, urlconf=self, kwargs=article_view_args)
+							kwargs.update({'day': str(obj.date.day).zfill(2)})
+				return self.article_view, [], kwargs
 		elif isinstance(obj, NewsletterIssue):
 			if obj.newsletter == self.newsletter:
-				return reverse(self.issue_view, urlconf=self, kwargs={'number': str(obj.number)})
+				return 'issue', [], {'numbering': obj.numbering}
+		elif isinstance(obj, (date, datetime)):
+			kwargs = {
+				'year': str(obj.year).zfill(4),
+				'month': str(obj.month).zfill(2),
+				'day': str(obj.day).zfill(2)
+			}
+			return 'articles_by_day', [], kwargs
 		raise ViewCanNotProvideSubpath
 	
 	@property
 	def urlpatterns(self):
-		base_patterns = patterns('',
-			url(r'^$', self.index_view),
-			url((r'^(?:%s)/?$' % self.issue_permalink_base), self.issue_archive_view),
-			url((r'^(?:%s)/(?P<number>\d+)/?$' % self.issue_permalink_base), self.issue_view)
+		urlpatterns = self.feed_patterns(r'^', 'get_all_articles', 'index_page', 'index') + patterns('',
+			url(r'^%s/(?P<numbering>.+)$' % self.issue_permalink_base, self.page_view('get_articles_by_issue', 'issue_page'), name='issue')
 		)
-		article_patterns = patterns('',
-			url((r'^(?:%s)/?$' % self.article_permalink_base), self.article_archive_view)
-		)
-		if self.article_permalink_style in 'DMY':
-			article_patterns += patterns('',
-				url((r'^(?:%s)/(?P<year>\d{4})/?$' % self.article_permalink_base), self.article_archive_view)
+		if self.issue_archive_page:
+			urlpatterns += patterns('',
+				url(r'^%s$' % self.issue_permalink_base, self.issue_archive_view, 'issue_archive')
 			)
-			if self.article_permalink_style in 'DM':
-				article_patterns += patterns('',
-					url((r'^(?:%s)/(?P<year>\d{4})/(?P<month>\d{2})/?$' % self.article_permalink_base), self.article_archive_view)
-				)
-				if self.article_permalink_style == 'D':
-					article_patterns += patterns('',
-						url((r'^(?:%s)/(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/?$' % self.article_permalink_base), self.article_archive_view),
-						url((r'^(?:%s)/(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[-\w]+)/?$' % self.article_permalink_base), self.article_view)
-					)
-				else:
-					article_patterns += patterns('',
-						url((r'^(?:%s)/(?P<year>\d{4})/(?P<month>\d{2})/(?P<slug>[-\w]+)/?$' % self.article_permalink_base), self.article_view)
-					)
-			else:
-				article_patterns += patterns('',
-					url((r'^(?:%s)/(?P<year>\d{4})/(?P<slug>[-\w]+)/?$' % self.article_permalink_base), self.article_view)
-				)
-		else:
-			article_patterns += patterns('',
-				url((r'^(?:%s)/(?P<slug>[-\w]+)/?$' % self.article_permalink_base), self.article_view)
+		if self.article_archive_page:
+			urlpatterns += patterns('',
+				url(r'^%s' % self.article_permalink_base, include(self.feed_patterns('get_all_articles', 'article_archive_page', 'articles')))
 			)
-		return base_patterns + article_patterns
+			if self.article_permalink_style in 'DMY':
+				urlpatterns += self.feed_patterns(r'^%s/(?P<year>\d{4})' % self.article_permalink_base, 'get_articles_by_ymd', 'article_archive_page', 'articles_by_year')
+				if self.article_permalink_style in 'DM':
+					urlpatterns += self.feed_patterns(r'^%s/(?P<year>\d{4})/(?P<month>\d{2})' % self.article_permalink_base, 'get_articles_by_ymd', 'article_archive_page', 'articles_by_month')
+					if self.article_permalink_style == 'D':
+						urlpatterns += self.feed_patterns(r'^%s/(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})' % self.article_permalink_base, 'get_articles_by_ymd', 'article_archive_page', 'articles_by_day')
+		
+		if self.article_permalink_style == 'Y':
+			urlpatterns += patterns('',
+				url(r'^%s/(?P<year>\d{4})/(?P<slug>[\w-]+)$' % self.article_permalink_base, self.article_view)
+			)
+		elif self.article_permalink_style == 'M':
+			urlpatterns += patterns('',
+				url(r'^%s/(?P<year>\d{4})/(?P<month>\d{2})/(?P<slug>[\w-]+)$' % self.article_permalink_base, self.article_view)
+			)
+		elif self.article_permalink_style == 'D':
+			urlpatterns += patterns('',
+				url(r'^%s/(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[\w-]+)$' % self.article_permalink_base, self.article_view)
+			)
+		else:	
+			urlpatterns += patterns('',
+				url(r'^%s/(?P<slug>[-\w]+)$' % self.article_permalink_base, self.article_view)
+			)
+		
+		return urlpatterns
 	
-	def index_view(self, request, node=None, extra_context=None):
-		context = {}
-		context.update(extra_context or {})
-		context.update({'newsletter': self.newsletter})
-		return self.index_page.render_to_response(node, request, extra_context=context)
+	def get_context(self):
+		return {'newsletter': self.newsletter}
 	
-	def article_view(self, request, slug, year=None, month=None, day=None, node=None, extra_context=None):
-		articles = self.newsletter.articles.all()
-		if year:
-			articles = articles.filter(date__year=year)
+	def get_article_queryset(self):
+		return self.newsletter.articles.all()
+	
+	def get_issue_queryset(self):
+		return self.newsletter.issues.all()
+	
+	def get_all_articles(self, request, extra_context=None):
+		return self.get_article_queryset(), extra_context
+	
+	def get_articles_by_ymd(self, request, year, month=None, day=None, extra_context=None):
+		articles = self.get_article_queryset().filter(date__year=year)
 		if month:
 			articles = articles.filter(date__month=month)
 		if day:
 			articles = articles.filter(date__day=day)
+		return articles, extra_context
+	
+	def get_articles_by_issue(self, request, numbering, extra_context=None):
 		try:
-			article = articles.get(slug=slug)
-		except:
+			issue = self.get_issue_queryset().get(numbering=numbering)
+		except NewsletterIssue.DoesNotExist:
 			raise Http404
-		context = {}
-		context.update(extra_context or {})
-		context.update({'newsletter': self.newsletter, 'article': article})
-		return self.article_page.render_to_response(node, request, extra_context=context)
+		context = extra_context or {}
+		context.update({'issue': issue})
+		return self.get_article_queryset().filter(issues=issue), context
 	
-	def article_archive_view(self, request, year=None, month=None, day=None, node=None, extra_context=None):
-		if not self.article_archive_page:
-			raise Http404
-		articles = self.newsletter.articles.all()
+	def article_view(self, request, slug, year=None, month=None, day=None, extra_context=None):
+		articles = self.get_article_queryset()
 		if year:
 			articles = articles.filter(date__year=year)
 		if month:
 			articles = articles.filter(date__month=month)
 		if day:
 			articles = articles.filter(date__day=day)
-		context = {}
-		context.update(extra_context or {})
-		context.update({'newsletter': self.newsletter, 'year': year, 'month': month, 'day': day, 'articles': articles})
-		return self.article_archive_page.render_to_response(node, request, extra_context=context)
-	
-	def issue_view(self, request, number, node=None, extra_context=None):
 		try:
-			issue = self.newsletter.issues.get(number=number)
-		except:
+			article = articles.get(slug=slug)
+		except NewsletterArticle.DoesNotExist:
 			raise Http404
-		context = {}
+		context = self.get_context()
 		context.update(extra_context or {})
-		context.update({'newsletter': self.newsletter, 'issue': issue})
-		return self.issue_page.render_to_response(node, request, extra_context=context)
+		context.update({'article': article})
+		return self.article_page.render_to_response(request, extra_context=context)
 	
-	def issue_archive_view(self, request, node=None, extra_context=None):
+	def issue_archive_view(self, request, extra_context):
 		if not self.issue_archive_page:
 			raise Http404
-		context = {}
+		context = self.get_context()
 		context.update(extra_context or {})
-		context.update({'newsletter': self.newsletter})
-		return self.issue_archive_page.render_to_response(node, request, extra_context=context)
\ No newline at end of file
+		context.update({
+			'issues': self.get_issue_queryset()
+		})
+		return self.issue_archive_page.render_to_response(request, extra_context=context)
+	
+	def title(self, obj):
+		return obj.title
+	
+	def item_title(self, item):
+		return item.title
+	
+	def item_description(self, item):
+		return item.full_text
+	
+	def item_author_name(self, item):
+		authors = list(item.authors.all())
+		if len(authors) > 1:
+			return "%s and %s" % (", ".join([author.get_full_name() for author in authors[:-1]]), authors[-1].get_full_name())
+		elif authors:
+			return authors[0].get_full_name()
+		else:
+			return ''
+	
+	def item_pubdate(self, item):
+		return item.date
+	
+	def item_categories(self, item):
+		return [tag.name for tag in item.tags.all()]
\ No newline at end of file