Submitting same form multiple times

same thing happen if i refresh the submitted form with POST datas. Even with the No Duplicate option on.

That would partially resolve the problem : if the user reload the page on the confirmation message, POST data would still be send again to the server, and Gravity Forms would add a duplicate entry for this form (even if the email field is set to no duplicate!).
I could set the confirmation message to be a page, so the user can't refresh and relaunch the POST request, but i think he could still click the browser back button and experience the same issue..

I thought there were a server-side validation based on the unique id or something to avoid this ?
Storing this id in the server session and flush it once the form has been submitted would forbid user to submit the same form again i guess ?

That would be a nice feature.. But if this doesn't exist yet, i'll stick with the jquery solution, thanks.

No caching plugins.
But i have 2 pages in my form.
the email field is on the first page of my form, so Gravity Forms probably doesn't validate it when submitting the whole form on page 2.
It thinks it doesn't need to be done because it was validated after page 1 was submitted.
But if the user reloads the confirmation message and resend the POST request with all the form fields, duplicates won't be checked for fields on page 1, thus i can several entries with the same email..

I think i will use the validation hook to force Gravity Forms to double check my email field. But this looks like a bug to me ;)

I have a similar problem, but it also involes using the authorize.net and paypal pro addons. People are submitting duplicate payments, and I'm not sure if its because they hit refresh or clicked the submit button multiple times. Is there anything in those addons that can help me prevent duplicate payments?

I thought of something else that I believe works as a work-around to this problem without having to code anything additional.

1) Make the confirmation be a thank you page
2) Add a captcha to the form (the captcha regenerates on each submission)

I too am experiencing the double submission.

I'm looking at the jquery hacks to add and evaluating implementing.

Seems if folks are having an issue with this it would make a nice addition to the standard code base so that nobody ever has this problem.

Either
1. Disabling the submit button when clicked
2. Change the "Submit" button to "Submitted" when clicked.

Best option would be disabling the submit button and letting people double-click, triple-click, 1000 click to their hearts content and have it only count as a single click.