Thanks for your help on this.
What is happening was that I was deleting the cookie, then the page
being linked to was doing a RedirectResponse("/index").
What I should be doing is a RedirectResponse("/index",
S.responseCookies:_*) to ensure the delete of the cookie happens.
I've now re-read section 3.14 of master.pdf which pointed me towards
RedirectWithState which was a great help.
Thank you!
Richard
On Sun, Aug 16, 2009 at 10:06 AM, marius d.<[email protected]> wrote:
>
> I just did a little test:
>
> 1. When redering page1 I'm setting a cookie. I'm also rendering a link
> like:
> SHtml.link("/page2", () => {
> S.deleteCookie("marius")
> }, Text("Got to /page1 and remove cookie"))
>
> 2. When I click the link page2 is rendered and in the HTTP header I am
> seeing the cookie being sent down to browser with no value and the
> expires is (1-1-1970 ....). Which is correct.
>
> Br's,
> Marius
>
> On Aug 15, 1:30 pm, Richard Dallaway <[email protected]> wrote:
>> Thank you for the debugging clue (very handy function; I can see
>> myself using that in other situations).
>>
>> What I see when the logout link is followed is:
>>
>> List()
>>
>> When I set the cookie originally, I do see a List(HTTPCookie(...))
>>
>> I'm running all of this on 127.0.0.1:8080.
>>
>> Thanks
>> Richard
>>
>> On Sat, Aug 15, 2009 at 8:37 AM, marius d.<[email protected]> wrote:
>>
>> > Your code looks fine to me. There is notmagic withXHtml.link just that
>> > when you click the link on server-side your function gets called
>> > before the /logout page gets rendered.
>>
>> > Can you add a function to LiftRules.onEndServicing ?
>>
>> > LiftRules.onEndServicing.append {
>>
>> > case (req, Full(resp)) =>
>> > val cookies = resp.toResponse.cookies
>> > // trace the cookies
>>
>> > case _ =>
>> > }
>>
>> > Br's,
>> > Marius
>>
>> > On Aug 14, 8:20 pm, Richard Dallaway <[email protected]> wrote:
>> >> I'm seeing some odd behaviour with a cookie I'm setting not being
>> >> removed. I'm unsure which phase of my code is broken or how deep my
>> >> misunderstandings are here... so I'm looking for some clues.
>>
>> >> I'm setting a "keep me logged in" cookie for users of my application.
>> >> That works fine using...
>>
>> >> val c = HTTPCookie(COOKIE_NAME,
>> >> encode(user)).setMaxAge(three_months_as_seconds)
>> >> S.addCookie(c)
>>
>> >> The encode(user) is, when all is said and done, returning the user PK
>> >> as the cookie value.
>>
>> >> I'm not using ProtoUser, I'm using the scheme outlined
>> >> inhttp://groups.google.com/group/liftweb/msg/85a8e790d5efec26
>>
>> >> That is, I have...
>>
>> >> object LoginContext {
>> >> object userId extends SessionVar[Box[Long]](KeepMeLoggedIn.findUserId)
>> >> // etc...
>>
>> >> }
>>
>> >> ...and the findUserId function tries to decode the cookie and find a
>> >> matching user:
>>
>> >> def findUserId:Box[Long] = for {
>> >> cookie <- S.findCookie(COOKIE_NAME);
>> >> cookie_value <- cookie.value;
>> >> (id, salt) <- decode(cookie_value);
>> >> u <- User.find(By(User.id, id),By(User.salt,salt))
>> >> } yield {
>> >> println(u)
>> >> id
>> >> }
>>
>> >> And that's all working for me.
>>
>> >> The problem comes when the user clicks the logout link, and I want to
>> >> remove this cookie.
>>
>> >> The logout link is:
>>
>> >> SHtml.link("/logout", LoginContext.logout, <span>Logout</span> )
>>
>> >> ... and LoginContext.logout is
>>
>> >> KeepMeLoggedIn.removeCookie()
>> >> // the above is just: S.deleteCookie(COOKIE_NAME)
>> >> userId.remove()
>> >> currentUser.remove()
>> >> S.request.foreach(_.request.session.terminate)
>>
>> >> And for completeness, my /logout page is a redirect to the home page:
>>
>> >> Menu(Loc("logout", List("logout") -> false, "Logout", Hidden, If(
>> >> ()=>false, ()=>RedirectResponse("/index")) ))
>>
>> >> What I'm seeing is:
>> >> - user clicks logout
>> >> - logout function called, and Jetty tells me /logout took N
>> >> milliseconds to render
>> >> - then I'm seeing activity in the findUserId function, a result is
>> >> found, and the user is logged back in again.
>> >> - then Jetty tells me /index took N milliseconds to render.
>>
>> >> When I dig into HTTP headers, I'm not seeing the cookie value being
>> >> set in the response header (which I believe is required to remove it).
>>
>> >> I'm guessing my confusion is perhaps over how the SHtml.link magic works?
>>
>> >> Any suggestions of where I might poke around next?
>>
>> >> I'm using 1.1-SNAPSHOT (updated a few hours ago).
>>
>> >> Thank you
>> >> Richard
> >
>
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