Merge pull request #8 from futureworkz/cache-control

TIL Rails: Cache Control in Rails

Author: stevenyap

rails/cache-control-in-rails.md

@@ -0,0 +1,22 @@
+# Cache Control in Rails
+
+Whenever we load a page in browser, it will stores a cached version of the page.
+
+So if users press the back buttons, the browser will simply load the cache version of the page.
+
+This can be an issues when there sensitive information involve.
+
+We can simply set the header `Cache-Control` in our `application_controller.rb`
+
+```ruby
+#application_controller
+  before_filter :set_as_private
+
+  protected
+
+  def set_as_private
+    response.headers['Cache-Control'] = 'no-cache, no-store'
+  end
+```
+
+In the case where you only need it in specific page, just use the `before_filter` in respective controller.