Generating a random number is insignificant. A timestamp would
probably be better though given the use case.
Anyway, the right answer is to do it from JavaScript if you have to
do it at all. Doing it from the TG side is nearly worthless because
only one unique identifier is going to end up in the page, but you
almost definitely need to fetch that JSON URL more than once during
the page view.
Is it *really* that hard?
loadJSONDoc(url, {uid: (new Date()).getTime()});
or if you already have a query string in there you'd have to do it
yourself:
loadJSONDoc(url + "&uid=" + (new Date()).getTime());
-bob
On Dec 7, 2005, at 2:21 PM, Erik Smartt wrote:
I like the idea of providing a workaround for URL caching (I know I've
dealt with this problem in the past as well), but at the same time, if
the proposed code is added to turbogears.view, then computing a random
number happens with every page view whether you want it or not.
Personally, I'd rather avoid adding extra processing overhead when not
needed. Can this be something we toggle on/off or only use when
needed? (ex., one can already add their own variables to 'std' if
needed.)
Cheers,
Erik
On 12/7/05, Bob Ippolito <[EMAIL PROTECTED]> wrote:
On Dec 7, 2005, at 1:30 PM, Jonathan LaCour wrote:
On Dec 7, 2005, at 3:58 PM, Bob Ippolito wrote:
If we were adding something for this explicit purpose, I'd
prefer to
add a flag to the url function and then have TurboGears eat the
incoming "tg_random" variable so that you don't need to add
another
parameter to your methods.
FYI, I've opened ticket 196 to implement this solution. It's a
small
enough task that I've targeted it for 0.9.
Why not just set the cache headers correctly instead?
I tried this repeatedly, and never was able to get it working with
IE. The only solution I have found that works is sending a
timestamp in the URL (which is similar to the proposed hash
solution).
Have you had a different experience with XMLHttpRequest and caching
in IE? If so, exactly what headers did you have to send? This
would be a much more elegant solution if it actually works :)
Setting Expires should work, but I don't have a Windows box in front
of me to confirm that I'm remembering it correctly.
-bob
