post_to_twitter.rb

#create tweets
#Since twitter API does not provide unique message check,
#I had to build db to validiate it.
  def bark(tweet) 
  @tweet = Tweet.new(tweet)
    if @tweet.save
############ RUN LATER BLOCK ################
      run_later do
        begin
         post(tweet)
        rescue Twitter::RESTError => re
          unless re.code == "403"
            puts re
          end
        end #begin-rescue end 
      end  #run_later end    
############ RUN LATER BLOCK ################
    else
      puts "failed to save them"
    end    
  end
  
  def post(tweet)
    sleep(15) # sleep. because of twitter api limit
    @poster = tweet[:message] + tweet[:name] +", " + tweet[:date] +"ago)" + tweet[:link]
    status =@post_client.status(:post, @poster)
  end