Merge pull request #200 from fedora-infra/feature/rss-feeds

Feature/rss feeds

setup.py

@@ -19,6 +19,7 @@
     'docutils',
     "python-dateutil",
     "moksha.wsgi>=1.2.1",
+    "webhelpers",
 
     # For qrcode to work from PyPI, you also need Pillow.
     # This is handled for us in Fedora because python-qrcode pulls in the

tahrir/__init__.py

@@ -133,6 +133,7 @@ def get_db(request):
     config.add_route('qrcode', '/qrcode')
     config.add_route('badge', '/badge/{id}')
     config.add_route('badge_json', '/badge/{id}/json')
+    config.add_route('badge_rss', '/badge/{id}/rss')
     config.add_route('builder', '/builder')
     config.add_route('about', '/about')
     config.add_route('explore', '/explore')
@@ -143,6 +144,7 @@ def get_db(request):
     config.add_route('tags', '/tags/{tags}/{match}')
     config.add_route('user', '/user/{id}')
     config.add_route('user_json', '/user/{id}/json')
+    config.add_route('user_rss', '/user/{id}/rss')
     config.add_route('login', '/login')
     config.add_route('logout', '/logout')
 

tahrir/templates/badge.mak

@@ -25,8 +25,11 @@
           % endif
           <p>Issued by: ${badge.issuer.name}</p>
           <p>Criteria: <a href="${badge.criteria}">${badge.criteria}</a></p>
-          <p>View badge as: <a href="${request.route_url('badge_json', id=badge.id)}">
-              JSON</a></p>
+          <p>
+            View badge as:
+            <a href="${request.route_url('badge_json', id=badge.id)}">JSON</a>,
+            <a href="${request.route_url('badge_rss', id=badge.id)}">RSS</a>
+          </p>
         </div>
       </div> <!-- End padded content. -->
     </div> <!-- End shadow. -->

tahrir/templates/user.mak

@@ -41,7 +41,9 @@
           % endif
 
           <p>
-            View user as: <a href="${request.route_url('user_json', id=user.nickname)}">JSON</a>
+            View user as:
+            <a href="${request.route_url('user_json', id=user.nickname or user.id)}">JSON</a>,
+            <a href="${request.route_url('user_rss', id=user.nickname or user.id)}">RSS</a>
           </p>
         </div>
         % if logged_in == user.email:

tahrir/views.py

@@ -13,6 +13,7 @@
 from datetime import datetime
 
 from mako.template import Template as t
+from webhelpers import feedgenerator
 from pyramid.view import (
     view_config,
     forbidden_view_config,
@@ -676,6 +677,94 @@ def badge_json(request):
     return _badge_json_generator(request, badge_id, badge)
 
 
+@view_config(route_name='badge_rss')
+def badge_rss(request):
+    """ Render per-badge rss. """
+
+    badge_id = request.matchdict.get('id')
+    badge = request.db.get_badge(badge_id)
+
+    if not badge:
+        raise HTTPNotFound("No such badge %r" % badge_id)
+
+    comparator = lambda x, y: cmp(x.issued_on, y.issued_on)
+    sorted_assertions = sorted(badge.assertions, cmp=comparator, reverse=True)
+
+    feed = feedgenerator.Rss201rev2Feed(
+        title=u"Badges Feed for %s" % badge.name,
+        link=request.route_url('badge', id=badge.id),
+        description=u"Latest recipients of the badge %s" % badge.name,
+        language=u"en",
+    )
+
+    description_template = "<img src='%s' alt='%s' />%s"
+
+    for assertion in sorted_assertions:
+        url = request.route_url(
+            'user', id=assertion.person.nickname or assertion.person.id)
+        feed.add_item(
+            title=assertion.person.nickname,
+            link=url,
+            pubdate=assertion.issued_on,
+            description=description_template % (
+                assertion.person.avatar_url(128),
+                assertion.person.nickname,
+                assertion.person.nickname,
+            )
+        )
+
+    return Response(
+        body=feed.writeString('utf-8'),
+        content_type='application/rss+xml',
+        charset='utf-8',
+    )
+
+
+@view_config(route_name='user_rss')
+def user_rss(request):
+    """ Render per-user rss. """
+
+    user_id = request.matchdict.get('id')
+    user = _get_user(request, user_id)
+
+    if not user:
+        raise HTTPNotFound("No such user %r" % user_id)
+
+    if user.opt_out == True and user.email != authenticated_userid(request):
+        raise HTTPNotFound("User %r has opted out." % user_id)
+
+    comparator = lambda x, y: cmp(x.issued_on, y.issued_on)
+    sorted_assertions = sorted(user.assertions, cmp=comparator, reverse=True)
+
+    feed = feedgenerator.Rss201rev2Feed(
+        title=u"Badges Feed for %s" % user.nickname,
+        link=request.route_url('user', id=user.nickname or user.id),
+        description=u"The latest Fedora Badges obtained by %s" % user.nickname,
+        language=u"en",
+    )
+
+    description_template = "<img src='%s' alt='%s'/>%s -- %s"
+
+    for assertion in sorted_assertions:
+        feed.add_item(
+            title=assertion.badge.name,
+            link=request.route_url('badge', id=assertion.badge.id),
+            pubdate=assertion.issued_on,
+            description=description_template % (
+                assertion.badge.image,
+                assertion.badge.name,
+                assertion.badge.name,
+                assertion.badge.description,
+            )
+        )
+
+    return Response(
+        body=feed.writeString('utf-8'),
+        content_type='application/rss+xml',
+        charset='utf-8',
+    )
+
+
 @view_config(route_name='user', renderer='user.mak')
 def user(request):
     """Render user info page."""