how to force Cache-Control to no-store in rails 3.2.20

Question

There are several S.O. questions on this like:

• Rails ( set_no_cache method) Cannot disable browser caching in Safari and Opera
• How to prevent browser page caching in Rails

But no mater what I do, what I override I'm still getting header (FireFox, Chrome, curl -V, ...any browser)

Cache-Control: must-revalidate, private, max-age=0

I tried

class ApplicationsController < ActionController::Base
  before_filter :no_store_cache
  after_filter :no_store_cache

  def no_store_cache
    response.headers["Cache-Control"] = "no-cache, no-store, max-age=0, must-revalidate"
    response.headers["Pragma"] = "no-cache"
    response.headers["Expires"] = '-1'
  end
end

I Tried to call this callback directly on ActionController::Base (https://github.com/equivalent/no_cache_control.git )

I Tried digging in rack-cache middle-ware overriding stuff trying to enforce the header

I've created my own middleware that was overriding header['Cache-Control'].

nothing works

Answer 1

With Rails 3.2 the gem no_cache_control only works when the rails app is booted in production mode. Can test this by booting your app in production mode with:

rails s -e production

Note: make sure you have your database.yml pointing somewhere valid for the production environment.

Answer 2

Rails 7 now has a no_store method.

before_action :no_store