Rails - May 2012 - how to prevent the user from accessing the app.after logout with back button(rails only)

hi all
after logging out of my site if i click back button it is going back
to my app. how can i restrict this problem
i have use before_filter also.


thanks in advance

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On 10 May 2012 07:54, honey ruby
<emailtohoneyruby-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> after logging out of my site if i click back button it is going back
> how can i restrict this problem
It''s a browser caching issue, so you need to tell the browser not to
cache.

http://stackoverflow.com/questions/711418/how-to-prevent-browser-page-caching-in-rails

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thanks for your reply i have added your code and i checked it. if i click
back button after logout it is still going back to app but it is give me
the error "

undefined method `username'' for nil:NilClass" it shows it going
back to app.


On Thu, May 10, 2012 at 12:53 PM, Michael Pavling
<pavling-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> On 10 May 2012 07:54, honey ruby
<emailtohoneyruby-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > after logging out of my site if i click back button it is going back
> > how can i restrict this problem
>
> It''s a browser caching issue, so you need to tell the browser not
to cache.
>
>
>
http://stackoverflow.com/questions/711418/how-to-prevent-browser-page-caching-in-rails
>
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On 10 May 2012 08:46, hanish jadala
<emailtohoneyruby-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> thanks for your reply i have added your code and i checked it. if i click
> back button after logout it is still going back to app but it is give me
the
> error "
>
> undefined method `username'' for nil:NilClass" it shows it
going back to app.
It''s not "my code" - it''s sample code from the
Internet.
Your error is now in your code - probably in the handling of
controller actions when users are not logged in.

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Several solutions in the before mentioned post were suggested. I used:

  before_filter :set_cache_buster

  def set_cache_buster
    response.headers["Cache-Control"] = "no-cache, no-store, max-
age=0, must-revalidate"
    response.headers["Pragma"] = "no-cache"
    response.headers["Expires"] = "Fri, 01 Jan 1990 00:00:00
GMT"
  end

I''m using Devise for authentication. All works like a charm.


On 10 mei, 09:52, Michael Pavling
<pavl...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On 10 May 2012 08:46, hanish jadala
<emailtohoneyr...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > thanks for your reply i have added your code and i checked it. if i
click
> > back button after logout it is still going back to app but it is give
me the
> > error "
>
> > undefined method `username'' for nil:NilClass" it shows
it going back to app.
>
> It''s not "my code" - it''s sample code from the
Internet.
> Your error is now in your code - probably in the handling of
> controller actions when users are not logged in.
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