carrierwave uploader example

picture_uploader.rb

class PictureUploader < CarrierWave::Uploader::Base

  include CarrierWave::MiniMagick

  storage :file

  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end


  version :thumb do
    process :resize_to_fill => [40, 30]
    process quality: 70
  end

  version :small do
    process :resize_to_fill => [187, 205]
    # process quality: 90
  end


  def extension_white_list
    %w(jpg jpeg gif png)
  end

end