Add two liaisons feeds:

* /feed/liaison/recent/ = last 15 liaisons
 * /feed/liaison/from/`from`/ = all liaisons from `from`, which is either an IETF wg acronym (all lowercase) or a FromBodies body_name (e.g., MFA%20Forum)
 - Legacy-Id: 903

ietf/liaisons/feeds.py

@@ -0,0 +1,57 @@
+# Copyright The IETF Trust 2007, All Rights Reserved
+
+from django.contrib.syndication.feeds import Feed, FeedDoesNotExist
+from django.utils.feedgenerator import Atom1Feed
+from ietf.liaisons.models import LiaisonDetail, FromBodies
+from ietf.idtracker.models import Acronym
+
+# A slightly funny feed class, the 'object' is really
+# just a dict with some parameters that items() uses
+# to construct a queryset.
+class Liaisons(Feed):
+    feed_type = Atom1Feed
+    def get_object(self, bits):
+	obj = {}
+	if bits[0] == 'recent':
+	    if len(bits) != 1:
+		raise FeedDoesNotExist
+	    obj['title'] = 'Recent Liaison Statements'
+	    obj['limit'] = 15
+	    return obj
+	if bits[0] == 'from':
+	    if len(bits) != 2:
+		raise FeedDoesNotExist
+	    obj['title'] = 'Liaison Statements from %s' % bits[1]
+	    try:
+		acronym = Acronym.objects.get(acronym=bits[1])
+		obj['filter'] = {'from_id': acronym.acronym_id}
+	    except Acronym.DoesNotExist:
+		# would like to use from_body__body_name but relation
+		# is broken due to database structure
+		frmlist = [b['from_id'] for b in FromBodies.objects.filter(body_name=bits[1]).values('from_id')]
+		if not frmlist:
+		    raise FeedDoesNotExist
+		obj['filter'] = {'from_id__in': frmlist}
+	    return obj
+
+    def title(self, obj):
+	return obj['title']
+
+    def link(self, obj):
+	# no real equivalent for any objects
+	return '/liaison/'
+
+    def description(self, obj):
+	return self.title(obj)
+
+    def items(self, obj):
+	# Start with the common queryset
+	qs = LiaisonDetail.objects.all().order_by("-submitted_date")
+	if obj.has_key('filter'):
+	    qs = qs.filter(**obj['filter'])
+	if obj.has_key('limit'):
+	    qs = qs[:obj['limit']]
+	return qs
+
+    def item_pubdate(self, item):
+	return item.submitted_date

ietf/templates/feeds/liaison_description.html

@@ -0,0 +1,15 @@
+{# Copyright The IETF Trust 2007, All Rights Reserved #}
+{% if obj.by_secretariat %}
+<h3>Attached Document(s)</h3>
+{% if obj.uploads_set.count %}
+<ul>
+{% for file in obj.uploads_set.all %}
+<li><a href="https://datatracker.ietf.org/documents/LIAISON/file{{ file.file_id }}{{ file.file_extension }}">{{ file.file_title }}</a><br>
+{% endfor %}
+</ul>
+{% else %}
+NONE
+{% endif %}
+{% else %}
+{{ obj.body|truncatewords:"30"|wordwrap:"71"|escape|linebreaksbr }}
+{% endif %}

ietf/templates/feeds/liaison_title.html

@@ -0,0 +1,6 @@
+{# Copyright The IETF Trust 2007, All Rights Reserved #}
+{% if obj.by_secretariat %}
+Liaison statement submitted by email from {{ obj.from_body|escape }} on {{ obj.submitted_date }}
+{% else %}
+{{ obj.title|escape }}
+{% endif %}

ietf/urls.py

@@ -5,6 +5,7 @@ from django.conf.urls.defaults import patterns, include, handler404, handler500
 from ietf.iesg.feeds import IESGMinutes
 from ietf.idtracker.feeds import DocumentComments, InLastCall
 from ietf.ipr.feeds import LatestIprDisclosures
+from ietf.liaisons.feeds import Liaisons
 
 from ietf.idtracker.sitemaps import IDTrackerMap, DraftMap
 from ietf.liaisons.sitemaps import LiaisonMap
@@ -19,6 +20,7 @@ feeds = {
     'last-call': InLastCall,
     'comments': DocumentComments,
     'ipr': LatestIprDisclosures,
+    'liaison': Liaisons,
 }
 
 sitemaps = {