ruby on rails - Setup for an uploader (carrierwave) -

i have image uploader in place following tutorial using gems carrierwave , fog. add additional uploader struggling.

i have generated uploader (rails generate uploader name). in model file have mounted uploader right column (mount_uploader :column_name, nameuploader). in uploader have set def extension_white_list , store_dir. included (since in tutorial did same):

if rails.env.production?   storage :fog else   storage :file end 

now i'm stuck don't know set specifications fog. is, specify amazon bucket should upload to. in carrier_wave initializer had code below. code specifies upload uploader had implemented. these specifications different new uploader. where/how should include these specs new uploader?

if rails.env.production?      carrierwave.configure |config|     config.fog_credentials = {       :provider              => 'aws',       :aws_access_key_id     => env['s3_access_key'],       :aws_secret_access_key => env['s3_secret_key'],       :region                => env['aws_region']     }     config.fog_directory     =  env['s3_bucket']   end  end 

by looking @ this wiki page seems possible override config each uploader

class avataruploader < carrierwave::uploader::base   # choose kind of storage use uploader:   storage :fog    # define uploader specific configurations in initializer   # override global configuration   def initialize(*)     super      self.fog_credentials = {       :provider               => 'aws',              # required       :aws_access_key_id      => 'yourawskeyid',     # required       :aws_secret_access_key  => 'yourawssecret',    # required     }     self.fog_directory = "yourbucket"   end end