stale?(options) — ActionController::Base

stale?(options)

Sets the etag and/or last_modified on the response and checks it against the client request. If the request doesn’t match the options provided, the request is considered stale and should be generated from scratch. Otherwise, it’s fresh and we don’t need to generate anything and a reply of “304 Not Modified” is sent.

Parameters:

:etag
:last_modified
:public By default the Cache-Control header is private, set this to true if you want your application to be cachable by other devices (proxy caches).

Example:

def show
  @article = Article.find(params[:id])

  if stale?(:etag => @article, :last_modified => @article.created_at.utc)
    @statistics = @article.really_expensive_call
    respond_to do |format|
      # all the supported formats
    end
  end
end

Parameters

options req

Source

# File actionpack/lib/action_controller/base.rb, line 1166
      def stale?(options)
        fresh_when(options)
        !request.fresh?(response)
      end

Defined in actionpack/lib/action_controller/base.rb line 1166 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActionController::Base

Signature

Parameters