best practice for loading aws s3 library on startup

Currently I have followed these instructions to get aws s3 working in my rails app

But its a little messy as a lot of the file uploading is actually done in the controller when I think it should be done in the model. Currently its done like this

class PhotoController < ApplicationController   before_filter :login_required   layout 'scaffold'

  #load model   model :s3_model

  #create S3::AWS handle   S3Model.init(@config_file)

The current files to load in the aws are: /lib/S3.rb (ruby library to connect to aws) /model/s3_model.rb

What I would like to do is put all of the aws s3 calls in the model when uploading a photo. I'm thinking instead to do this..

class ApplicationController < ActionController::Base     include S3     model :s3_model

  #create S3::AWS handle   S3Model.init(@config_file)

But if I do this.. this would only given accessibility to the aws handler in the controller and not the model right?

If I had a class ProfilePicture < ActiveRecord::Base how would I give the aws handler visibility there?

thanks in advance! -dan