I've been using Flex do do this for some time now and it works well: http://www.adobe.com/devnet/coldfusion/articles/multifile_upload.html
It even checks filesizes before upload and allows multiple files in one operation. On Feb 2, 2008 4:41 PM, s. isaac dealey <[EMAIL PROTECTED]> wrote: > > >>Put simply, you can't. > > > > Really? > > > > Check this out: > > http://php5.bluga.net/UploadProgressMeter/demo.php > > > > Grumbles to self.... > > Well that one isn't working for me with Firefox 2 and a 512kb file (says > a 250kb file should be a good demo for most connections)... Instead I > get "upload complete" pretty much instantly followed by a javascript > error. > > However. If you get really creative, I would think you might be able to fake > something that's semi accurate some of the time (when the weather is > just right). Avoid trying to use Ajax to send the file -- that's liable > to just frustrate you even more. Submit the form via an iframe instead > and on the request that receives the form submission, check initially > for the length of the request data using getHTTPRequestData() > > It's a rarely used function that almost nobody knows about (of course > because it's rarely used) - here's the livedocs article > > http://livedocs.adobe.com/coldfusion/7/htmldocs/wwhelp/wwhimpl/common/html/wwhelp.htm?context=ColdFusion_Documentation&file=00000482.htm > > I *think* that you can fetch that prior to your cffile tag and use it to > figure out how much data is coming up. Though you still would need to > have a way of roughly figuring the user's connection speed, which with > larger files will also fluctuate during an upload, and there won't be > any way to really guage the fluctuation since you don't get any feedback > from cf between the start and end of the cffile tag processing. > > So yeah, the short answer is still "no". The long answer is basically > "not reliably the way you'd want it to work". > > This might not be a bad time to submit a feature request for CF9 to add > an attribute or maybe a sub-tag to the cffile tag that would allow it to > execute some kind of progress monitoring code at intervals. If for no > other reason than that this question crops up pretty regularly on > mailing lists. I would think something like: > > <cffile action="upload" filefield="yadda"> > <cffileprogress interval="1000"> > <cfset session.fileprogress = cffile.percentcomplete /> > </cffileprogress> > </cffile> > > That's a real crude, "off the top of my head" thought. Interval would be > miliseconds, so it'd update the fileprogress once per second and then > you'd use a series of ajax calls or the like at similar intervals to > update the original page. > > All of which still hinges on my guess being correct that the page starts > executing (or can) before all of the multi-part/formdata is finished > transferring. I honestly don't know if the webserver will allow that. > > -- > s. isaac dealey ^ new epoch > isn't it time for a change? > ph: 503.236.3691 > > http://onTap.riaforge.org/blog > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;160198600;22374440;w Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:297986 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
