carrierwave with fog

gistfile1.rb

CarrierWave.configure do |config|

  if Rails.env.development? || Rails.env.test?
    config.storage = :file
  else
    config.storage = :fog
    config.fog_credentials = {
    :provider               => 'AWS',       # required
    :aws_access_key_id      => Settings.amazon.access_key_id,       # required
    :aws_secret_access_key  => Settings.amazon.secret_access_key,       # required
    :region                 => Settings.amazon.region  # optional, defaults to 'us-east-1'
  }
  config.fog_directory  = Settings.amazon.bucket                  # required
  config.fog_public     = true                                    # optional, defaults to true
  config.fog_attributes = {'Cache-Control'=>'max-age=315576000'}  # optional, defaults to {}
  end
end