Rails - May 2006 - How do you delete a session variable?

Hi

Let''s say we set session[:foo] = ''bar''. Now we want
to remove the :foo
key completely. How do you do that?

Appearantly, session is a CGI::Session [1] instance, so it doesn''t
have #delete like Hash. I tried:

session[:foo] = nil

But then debug(session) shows an empty :foo key. I''d like to remove
that key, as my session is already pretty crowded. Is it possible?

-- 
-Alder

[1] http://ruby-doc.org/core/classes/CGI/Session.html

On Thursday, May 18, 2006, at 11:56 AM, Alder Green
wrote:
>Hi
>
>Let''s say we set session[:foo] = ''bar''. Now we
want to remove the :foo
>key completely. How do you do that?
>
>Appearantly, session is a CGI::Session [1] instance, so it doesn''t
>have #delete like Hash. I tried:
>
>session[:foo] = nil
>
>But then debug(session) shows an empty :foo key. I''d like to remove
>that key, as my session is already pretty crowded. Is it possible?
>
>--
>-Alder
>
>[1] http://ruby-doc.org/core/classes/CGI/Session.html
>_______________________________________________
>Rails mailing list
>Rails@lists.rubyonrails.org
>http://lists.rubyonrails.org/mailman/listinfo/rails

Will session.delete["foo"] work?

-- 
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see http://wiki.rubyonrails.org/rails/pages/HowtoWorkWithSessions for your
answer.


On 18 May 2006 14:44:35 -0000, Richard Williams <
devlists-rubyonrails@devlists.com> wrote:
>
>
> On Thursday, May 18, 2006, at 11:56 AM, Alder Green wrote:
> >Hi
> >
> >Let''s say we set session[:foo] = ''bar''. Now
we want to remove the :foo
> >key completely. How do you do that?
> >
> >Appearantly, session is a CGI::Session [1] instance, so it
doesn''t
> >have #delete like Hash. I tried:
> >
> >session[:foo] = nil
> >
> >But then debug(session) shows an empty :foo key. I''d like to
remove
> >that key, as my session is already pretty crowded. Is it possible?
> >
> >--
> >-Alder
> >
> >[1] http://ruby-doc.org/core/classes/CGI/Session.html
> >_______________________________________________
> >Rails mailing list
> >Rails@lists.rubyonrails.org
> >http://lists.rubyonrails.org/mailman/listinfo/rails
>
>
> Will session.delete["foo"] work?
>
> --
> Posted with http://DevLists.com.  Sign up and save your mailbox.
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
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On 18 May 2006 14:44:35 -0000, Richard Williams
<devlists-rubyonrails@devlists.com> wrote:
>
> On Thursday, May 18, 2006, at 11:56 AM, Alder Green wrote:
> >Hi
> >
> >Let''s say we set session[:foo] = ''bar''. Now
we want to remove the :foo
> >key completely. How do you do that?
> >
> >Appearantly, session is a CGI::Session [1] instance, so it
doesn''t
> >have #delete like Hash. I tried:
> >
> >session[:foo] = nil
> >
> >But then debug(session) shows an empty :foo key. I''d like to
remove
> >that key, as my session is already pretty crowded. Is it possible?
> >
> >--
> >-Alder
> >
> >[1] http://ruby-doc.org/core/classes/CGI/Session.html
> >_______________________________________________
> >Rails mailing list
> >Rails@lists.rubyonrails.org
> >http://lists.rubyonrails.org/mailman/listinfo/rails
>
>
> Will session.delete["foo"] work?
No, since the object returned by #session isn''t a Hash - it''s
a
Hash-like instance of CGI::Session. So it doesn''t have the various
Hash intance methods. It does have a #hash method btw, but it does
something entirely different ("Delete the session from storage. Also
closes the storage.")

-- 
-Alder

On 5/18/06, Chris Hall <christopher.k.hall@gmail.com>
wrote:
>
> see
> http://wiki.rubyonrails.org/rails/pages/HowtoWorkWithSessions
> for your answer.
"
Completely removing a previously-set key/value pair:
[not possible]
"

Ok, guess it''s better than no answer :)

Thanks.

-- 
-Alder