purge old friend requests

a background worker to periodically remove friend requests that
have not been accepted and are more than a week ago

ruby/lib/jam_ruby/models/friend_request.rb

@@ -83,6 +83,10 @@ module JamRuby
       return friend_request
     end
 
+    def self.purgeable_requests
+      FriendRequest.where("status IS NULL AND created_at < ?", 1.week.ago)
+    end
+
     private
       def self.validate_friend_request(friend_request, user_id, friend_id)
         friend_requests = FriendRequest.where("user_id='#{user_id}' AND friend_id='#{friend_id}'")

ruby/lib/jam_ruby/resque/scheduled/friend_request_cleaner.rb

@@ -0,0 +1,18 @@
+module JamRuby
+  class FriendRequestCleaner
+    extend Resque::Plugins::JamLonelyJob
+
+    @queue = :friend_request_cleaner
+    @@log = Logging.logger[FriendRequestCleaner]
+
+    def self.perform
+      @@log.debug("waking up")
+      
+      FriendRequest.purgeable_requests do |request|
+        request.destroy
+      end
+      @@log.debug("done")
+    end
+
+  end
+end

web/config/scheduler.yml

@@ -104,3 +104,8 @@ TallyAffiliates:
   cron: "0 0,4,8,12,16,20 * * *"
   class: "JamRuby::TallyAffiliates"
   description: "Tallies up affiliate totals"
+
+FriendRequestCleaner:
+  cron: "0 3 * * *"
+  class: "JamRuby::FriendRequestCleaner"
+  description: "Purge old friend requests that have not been accepted"