dsl-ified feed definitions

app/models/feeds/blog.rb

@@ -1,16 +1,11 @@
 class Blog < Feed
 
-  entries_become :articles
-
-  def refresh!
-    entries.each do |entry|
-      article = articles.build :content => entry.content, :header => entry.title
-      article.permalink  = entry.urls.first
-      article.created_at = entry.try(:date_published)
-      article.updated_at = entry.try(:last_updated)
-      article.save
-    end
-    update_attribute :updated_at, Time.now
+  entries_become :articles do |entry|
+    article = articles.build :content => entry.content, :header => entry.title
+    article.permalink  = entry.urls.first
+    article.created_at = entry.try(:date_published)
+    article.updated_at = entry.try(:last_updated)
+    article.save
   end
 
 end

app/models/feeds/delicious.rb

@@ -1,14 +1,10 @@
 class Delicious < Feed
 
-  entries_become :links
-
-  def refresh!
-    entries.each do |entry|
-      logger.debug '=> adding entry'
-      link = links.build :permalink => entry.urls.first, :header => entry.title, :content => entry.content
-      link.created_at = entry.date_published
-      link.save
-    end
+  entries_become :links do |entry|
+    logger.debug '=> adding entry'
+    link = links.build :permalink => entry.urls.first, :header => entry.title, :content => entry.content
+    link.created_at = entry.date_published
+    link.save
   end
 
 end

app/models/feeds/flickr.rb

@@ -1,17 +1,14 @@
 class Flickr < Feed
-  entries_become :pictures
 
-  def refresh!
-    entries.each do |entry|
-      doc = Hpricot(entry.content)
-      picture = pictures.build \
-        :permalink => (doc/"img").first['src'].gsub(/_m/, ''),
-        :header => entry.title,
-        :cite => entry.urls.first
-      # picture.created_at = entry.try(:date_published)
-      picture.updated_at = entry.try(:last_updated)
-      picture.save
-    end
-    update_attribute :updated_at, Time.now
+  entries_become :pictures do |entry|
+    doc = Hpricot(entry.content)
+    picture = pictures.build \
+      :permalink => (doc/"img").first['src'].gsub(/_m/, ''),
+      :header => entry.title,
+      :cite => entry.urls.first
+    # picture.created_at = entry.try(:date_published)
+    picture.updated_at = entry.try(:last_updated)
+    picture.save
   end
+
 end

app/models/feeds/twitter.rb

@@ -1,13 +1,9 @@
 class Twitter < Feed
 
-  entries_become :tweets
-
-  def refresh!
-    entries.each do |entry|
-      tweet = tweets.build :permalink => entry.urls.first, :content => entry.content.gsub(/\A\w*:?\s/, '')
-      tweet.created_at = entry.try(:date_published)
-      tweet.save ? tweet : tweet.destroy
-    end
+  entries_become :tweets do |entry|
+    tweet = tweets.build :permalink => entry.urls.first, :content => entry.content.gsub(/\A\w*:?\s/, '')
+    tweet.created_at = entry.try(:date_published)
+    tweet.save ? tweet : tweet.destroy
   end
 
 end

config/initializers/feedable.rb

@@ -18,9 +18,14 @@ def acts_as_feed
     end
 
     module ClassMethods
-      def entries_become(post_type)
+      def entries_become(post_type, &block)
         self.entry_type = post_type
         has_many post_type.to_sym, :foreign_key => :feed_id, :dependent => :destroy
+        define_method(:refresh!) do
+          entries.each(&block.bind(self))
+          self.updated_at = Time.now
+          self.save
+        end
       end
     end