ruby paperclip to s3 error - ruby

Question

I'm trying to use paperclip with heroku and s3, but I have many tables that can be associated with photos, we'll use :review for example.
I'm trying to seperate the photo from the review and upload that seperately, but since I'm new to ruby, I think I'm failing miserably.
I have the 'aws-s3' gem installed and bundled.
This is the error I'm getting:
LoadError in ReviewsController#create
no such file to load -- aws/s3 (You may need to install the aws-s3 gem)
Rails.root: C:/www/devise
Application Trace | Framework Trace | Full Trace
app/controllers/reviews_controller.rb:56:in `new'
app/controllers/reviews_controller.rb:56:in `block in create'
app/controllers/reviews_controller.rb:54:in `create'
app/controllers/redirect_back.rb:23:in `store_location'
This error occurred while loading the following files:
aws/s3
photo Model:
class Photo < ActiveRecord::Base
belongs_to :user
belongs_to :shop
belongs_to :baristum
belongs_to :review
#paperclip
has_attached_file :photo,
:styles => {
:thumb=> "100x100#",
:small => "400x400>",
:original => "800x800" },
:storage => :s3,
:s3_credentials => "#{RAILS_ROOT}/config/s3.yml",
:path => "/:style/:id/:filename"
end
photo schema:
t.string "file_name"
t.string "content_type"
t.integer "file_size"
t.integer "user_id"
t.integer "barista_id"
t.integer "review_id"
t.integer "shop_id"
t.datetime "created_at"
t.datetime "updated_at"
review Controller:
def create
#add the current user to the review hash, from the session var.
params[:review][:user_id] = current_user.id
#move the photo to another var, so I can remove it from the review insert
#photoUpload = params[:review][:photo]
params[:review].delete("photo")
#review = Review.new(params[:review])
respond_to do |format|
if #review.save
#photo = Photo.new(:photo => #photoUpload, :review_id => #review.id)
#photo.save
format.html { redirect_to(#review, :notice => 'Review was successfully created.') }
format.xml { render :xml => #review, :status => :created, :location => #review }
else
#shopList = Shop.find(:all)
format.html { render :action => "new" }
format.xml { render :xml => #review.errors, :status => :unprocessable_entity }
end
end
end
gemfile
source 'http://rubygems.org'
gem 'pg'
gem 'rake', '~> 0.8.7'
gem 'rails', '3.0.5'
#gem 'sqlite3-ruby', :require => 'sqlite3'
gem 'devise', :git => 'git://github.com/plataformatec/devise', :branch => 'master'
gem 'omniauth', '0.2.0'
gem 'paperclip'
#gem 'RMagick'
gem "simple_form", "~> 1.2.2"
gem 'twitter_oauth', '0.4.3'
gem "rest-client", "1.6.1", :require => "restclient"
gem "sluggable"
gem 'gmaps4rails'
gem 'exception_notification', :require => 'exception_notifier'
gem 'yaml_db'
#gem 'mysql'
gem 'aws-s3'
#gem 'carrierwave'
#gem 'fog' #amazon s3
#gem 'nokogiri'
group :development, :test do
gem 'rspec-rails'
gem 'fixjour'
end

Answer 1

When you include in your gem file the 'aws-s3' gem remember to add the require statement.
gem 'aws-s3', :require => 'aws/s3'

Answer 2

Current versions of Paperclip use the aws-sdk gem, rather than the aws-s3 gem.
Try running the latest version of that gem, combined with the latest version of Paperclip which supports your Rails stack (Paperclip 2.x for Rails 2.3, or Paperclip 3.x for Rails 3+).

Answer 3

Looks like you need to have the following fields in your photos schema.
t.string :file_file_name
t.string :file_content_type
t.integer :file_file_size
t.datetime :file_updated_at
running this will generate a migration for you to do just that
#this convention: rails generate paperclip [model] [attachmentname]
rails generate paperclip photo file
You have to have the table columns named following this convention for paperclip to pick them up: 'attachmentname'_file_name, 'attachmentname'_content_type, etc... Where you're calling your Photo model's has_attachment "file".