Saxondale
ETags for assets that are delivered with Rails controllers
#####Purpose
The assets in FedoraCommons are expensive to load. This gem uses Rails conventions to cache and compare the hashes of ETags.
#####Add to your Gemfile
gem 'saxondale'#####Examples
# app/controllers/image_controller.rb
etag :thumbnail
def thumbnail
@image = Image.find(params[:id])
authorize! :read, @image
data_stream = @image.datastreams['thumbnail']
send_data data_stream.content,
filename: 'thumbnail',
disposition: :inline,
type: ds.mimeType)
end # app/models/image.rb
expire_etag :thumbnail