# encoding: utf-8 class CampaignBackgroundImageUploader < CarrierWave::Uploader::Base include CarrierWave::MiniMagick def store_dir "uploads/campaigns/#{mounted_as}/#{model.id}" end # Create different versions of your uploaded files: version :normal do process :resize_to_fill => [1000, 600] end def extension_white_list %w(jpg jpeg png) end def cache_dir "#{Rails.root}/tmp/uploads" end end