printing before long uploading in cgi

[mmfried]

Hello,

I am doing an upload i my cgi program.
there might be some long uploads so i want to show a nice waiting gif while waiting to the upoad to finish.

I tried to set the $| to 1 but it didn't work - the gif shows only after the upload finishes.

what should i do?

 

[siberian]

This will always be the case with standard CGI. When you do a FILE upload in CGI the upload is transmitted first before any other activity can happen.

The way I get around this is to upload to a different window. Then using javascript you can background that window and redirect the front window to a nice 'progress bar'. When the upload finishes the 'back window' refreshes and has javascript to redirect the front window and close itself out.

Alternatively you can use javscript to pop-open a window that is the 'progress animation' and keep your upload in the primary window. When the upload finishes the primary window loads with javascript to close the 'animation pop-up' you opened using javascript.

The reason this works is that javascript can intercept the onClick event, do some actions and then do a form.submit() to start the upload action.

The only way I know to truly do what you are trying to do is using Mod_Perl and Apache::UploadMeter but I have never been successful with it.

Hope this helps.

 

[mmfried]

Thanks siberian. I'll use the JS way after all.