class ApplicationController < ActionController::Base
# ...
def with_etag_cache(*etag_params)
response.etag = etag_params
if request.fresh?(response)
head :not_modified
else
yield
end
end
end
app/controllers/article.rb
class Article < ApplicationController
def show
with_etag_cache(:article, params[:id]) do
# ... fetch and render; will be skipped if E-Tag matches
end
end
end
