[Zope] Set and Detect Cookies in same call?

[Jim Kutter]

Thanks. I was kind of hoping for something clean like "if
context.detectCookies(): ...", but oh well...

Sorry about the html posting!

-jim
----- Original Message -----
From: "Casey Duncan" <casey@zope.com>
To: "Jim Kutter" <zope-list@ebizq.net>
Cc: <zope@zope.org>
Sent: Monday, October 21, 2002 1:43 PM
Subject: Re: [Zope] Set and Detect Cookies in same call?


> The call to "setCookie" merely changes the cookies HTTP header that is
sent to the user agent (browser). It suggests to the browser that is should
persist this value and send it back with any and all requests in the domain
(and path) of the cookie.
>
> Whether the user agent actually does this is not knowable until the next
request when the cookie comes back (or doesn't).
>
> cookies.has_key reflects all cookie values from the user agent plus any
that have been set in this request AFAIK. So your diagnosis is correct, it
is not telling you that the user agent has actually "eaten" the cookie. It
hasn't even gotten to the user agent yet. That doesn't happen until you
start sending data to the user agent.
>
> So the only way to see if cookies are enabled it to try to set one in one
request and then try to read it in another. If it isn't there, then you know
cookies are not supported by the user agent.
>
> The best way to do this is to set the cookie and redirect the browser to
get another URL which looks for the cookie. Something like:
>
> ## Script (Python) "testSetCookie"
> response = context.REQUEST.RESPONSE
> response.setCookie('foo', 'Some Value', path='/')
> response.redirect('testGetCookie')
>
> ## Script (Python) "testGetCookie"
> response = context.REQUEST.RESPONSE
> if response.cookies.has_key('foo'):
>     # We have cookies, be happy
>
> hth,
>
> -Casey
>
>
> On Mon, 21 Oct 2002 13:17:48 -0400
> "Jim Kutter" <zope-list@ebizq.net> wrote:
>
> > I have searched high and low for an answer, and haven't found one yet:
> >
> > Is it possible to set a cookie, then detect if it got set properly
immediately after? Or do I have to set it in one call, then detect it in
another?
> >
> > It seems that setCookie puts the "cookie" variable into the request
object regardless if cookies are enabled, so a later in the same call,
calling cookies.has_key always returns true. Is this what's happening?
> >
> > Thanks
> >
> > -jim
>
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