Add RSS feed for recipes by tag

feed/urls.py

@@ -1,7 +1,8 @@
 from django.conf.urls import *
-from views import RecentRecipesFeed,TopRecipesFeed
+from views import RecentRecipesFeed,TopRecipesFeed,TaggedRecipesFeed
 
 urlpatterns = patterns('',
     (r'^recent/$', RecentRecipesFeed()),
     (r'^top/$', TopRecipesFeed()),
-)
+    (r'^tag/(?P<tag>[-\w]+)/$', TaggedRecipesFeed()),
+)

feed/views.py

@@ -2,6 +2,7 @@
 from django.conf import settings
 from django.utils.translation import ugettext as _
 from recipe.models import Recipe
+from taggit.models import Tag, TaggedItem
 
 
 class RecentRecipesFeed(Feed):
@@ -32,4 +33,32 @@ def item_title(self, item):
         return item.title
 
     def item_description(self, item):
-        return item.info
+        return item.info
+
+class TaggedRecipesFeed(Feed):
+
+    def get_object(self, request, tag):
+        return tag
+
+    def title(self, tag):
+        return settings.OETITLE + _(" Recipes tagged %s") % tag
+
+    def link(self, tag):
+        return "/tags/recipe/" + tag + "/"
+
+    def description(self, tag):
+        return _("New recipes tagged %s added to %s") % (tag, settings.OETITLE)
+
+    def items(self, tag):
+        try:
+            recipe_tag = Tag.objects.get(slug=tag)
+        except Tag.DoesNotExist:
+            return []
+        recipes_tagged = TaggedItem.objects.filter(tag=recipe_tag).order_by('-id')[:10]
+        return [recipe.content_object for recipe in recipes_tagged]
+
+    def item_title(self, item):
+        return item.title
+
+    def item_description(self, item):
+        return item.info

tags/views.py

@@ -11,4 +11,7 @@ def recipeTags(request, tag):
     for recipe in recipes_tagged:
         recipe_list.append(recipe.content_object)
 
-    return render_to_response('tags/recipe_tags.html', {'recipe_list': recipe_list}, context_instance=RequestContext(request))
+    return render_to_response('tags/recipe_tags.html', {
+        'recipe_list': recipe_list,
+        'recipe_tag': tag
+    }, context_instance=RequestContext(request))

templates/tags/recipe_tags.html

@@ -5,6 +5,7 @@
       <script type="text/javascript" src="{{ STATIC_URL }}js/jquery.ui.stars/jquery.ui.stars.js"></script>
      <link href="{{ STATIC_URL }}js/jquery.ui.stars/crystal-stars.css" rel="stylesheet" />
 {% endblock %}
+{% block feeds %}<link href="/feed/tag/{{ recipe_tag }}" rel="alternate" type="application/rss+xml" title="{{ OETITLE }}{% blocktrans %} Feed: Recipes tagged {{ recipe_tag }}{% endblocktrans %}" />{% endblock %}
 
 {% block content %}
     {% autopaginate recipe_list  %}