S3

class AttachmentUploader < CarrierWave::Uploader::Base
  include CarrierWave::MiniMagick

  storage :s3
  
  def s3_headers
    content_type = {"Content-Type" => "application/octet-stream"}
    if self.file.filename.match(/(\.jpg)|(\.jpeg)/) 
      content_type = {"Content-Type" => "image/jpeg"}
    end
    if self.file.filename.match(/\.png/) 
      content_type = {"Content-Type" => "image/png"}
    end
    if self.file.filename.match(/\.pdf/)
      content_type = {"Content-Type" => "application/pdf"}
    end
    return content_type
  end
  
  def store_dir
    ['system', 'attachments', model.id].join('/')
  end

  def extension_white_list
    %w(zip pdf ps dvi doc docx ppt pptx xls xlsx jpg jpeg gif png rtf)
  end
end