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NOTE: use Perl; is on undef hiatus. You can read content, but you can't post it. More info will be forthcoming forthcomingly.

All the Perl that's Practical to Extract and Report

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  • Just have the logout action accept a returnto query parameter, and stick the value of $c->req->uri into that when you emit the logout link. Much simpler; the server doesn’t have to do any bookkeeping, no DB accesses, nothing.

    Also, flash is bad anyway – subject to race conditions. It will restore the flashed variables into the session for whichever request happens to come in with the right session cookie, even if that request was made by a different tab/browser window/computer/scraper threa

    • Agreed.  In any event, flash-based solutions are unlikely to win you friends who are truly security conscious when there are static methods that have worked forever that still work.  (And, for that matter, shockwave, java, or javascript solutions will also not motivate friends in the above mentioned crowd.)

      Passing the information as form values is especially a good idea because it then makes passing other form values a no brainer.  And when you do that, the login form no longer causes your users to curse at you for requiring that they re-enter their form data.  I've never seen a client-side code solution to return you to the same place handle this right.

      Finally, it also has a win for the multi-tab or multi-window user; if they're on your site multiple times, and they manage to get two login pages displayed, both pages will then proceed to the correct place.  Yeah, I know, I'm a freak for doing this, but sometimes my net connection's slow.  Rather than waiting, I change tabs.  Isn't that what they're for?

      • Err, “flash” in this case does not refer to Macromedia Flash, rather, to a particular feature of the session plugin.

        • Sigh.  That's what happens when I try to comment on things while trying to catch up on my reading.  If it had been using Macromedia Flash, then it wouldn't be storing the data server-side.

          However, I do think my point still stands of this mentality tends to drops post form data.  It doesn't have to - one could store that in session data also, but it's considerably easier and less problematic to simply use forms, as indicated for the more general case in your original response.