Fix resque exception

lib/tasks/resque.rake

 require 'resque/tasks'
-# Fix Exception
-# ActiveRecord::StatementInvalid
-# Error
-# PGError: ERROR: prepared statement "a3" already exists
 task "resque:setup" => :environment do
-  Resque.after_fork do |job|
-    ActiveRecord::Base.establish_connection
+  Resque.after_fork do
+    Resque.redis.client.reconnect
   end
 end