That's what I've found, too, that uploading using ajax is not possible. But :-), I don't need the upload to be ajax, all I need is the filename, as soon as the file was choosen by the user. That way I could validate the filename serverside, and provide immediate feedback, before the (maybe) long upload is performed. So, just adding a parameter to the ajax "onchange" call would do the trick.
What I'll try now is adding another "hidden" ajax form, link the file upload element to a hidden field in this form, and then "manually" submit this form, by adding my own "wicket free" javascript... not beautiful, but should work. Thanks for your help, Thomas -------- Original-Nachricht -------- > Datum: Wed, 27 Aug 2008 08:57:01 -0700 (PDT) > Von: Michael Sparer <[EMAIL PROTECTED]> > An: [email protected] > Betreff: Re: fileupload element checking filename existing before upload > using ajax > > the problem is file uploading with ajax - that's just not possible > (restriction of the http protocol as far as I remember), however you can > 'simulate' using some approaches, e.g. a hidden iframe where you post your > file to. > that topic has been discussed many times, just search the list - if i > remember correctly there's already a component for that somewhere in > wicketstuff ... > > regards, > Michael > > Thomas Lutz wrote: > > > > Hi list ! > > > > I'm trying to build a upload form consisting of one ore more > fileuploads. > > > > If the file(s) already exist(s) on the server, I'd like to throw a > > validation message, but, before uploading takes place. > > > > I tried to attach AjaxEventBehavior to the FileUploadField, onchange is > > executed, but I've no access to the current value of the file input > > element. Tried AjaxFormComponentUpdatingBehavior as well, no success. > > > > How should I approach this ? Basically all I need is ajaxing the > onchange > > with the "new value" back to the server. > > > > Thanks for your help, > > Thomas > > -- > > Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! > > Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > ----- > Michael Sparer > http://talk-on-tech.blogspot.com > -- > View this message in context: > http://www.nabble.com/fileupload-element-checking-filename-existing-before-upload-using-ajax-tp19181551p19184026.html > Sent from the Wicket - User mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] -- GMX Kostenlose Spiele: Einfach online spielen und Spaß haben mit Pastry Passion! http://games.entertainment.gmx.net/de/entertainment/games/free/puzzle/6169196 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
