Steve Grunwell

Buckeye Interactive

This plugin adds silent duplicate detection to the popular <a href="http://www.gravityforms.com/" rel="nofollow ugc">Gravity Forms</a> WordPress plugin. The goal is to prevent Gravity Forms from creating multiple entries when an impatient user double-, triple, or full-on secret-combo-move-clicks his/her mouse when submitting a form. No modifications to your forms is necessary, it just works.
<h4>How does it work?</h4>
The plugin prevents duplicate submissions in two ways: first, a small bit of JavaScript is loaded into the page that disables the submit button(s) on form submit. Second, the plugin creates a cryptographic hash of the form data upon submission. This unique hash is compared to a hash stored in a PHP session (if available) and, if a matching hash is found, the form data is altered to simulate a failing honeypot condition. Like with all failed honeypots, Gravity Forms will skip saving the data or sending any notifications but the form will appear (to the user) to have been submitted successfully.
Plugin development can be tracked on the project’s Github Page: <a href="https://github.com/buckii/gravity-forms-duplicate-prevention" rel="nofollow ugc">https://github.com/buckii/gravity-forms-duplicate-prevention</a>

Gravity Forms Duplicate Prevention

This is a great plugin! We've had issues with forms that allow users to upload files; if the files were fairly large (and the website was on a slower server) the form would take a bit longer to process.  This plugin helped stop duplicate submissions when the user was getting impatient and pressing the submit button multiple times.  Thanks a bunch!



Great plugin!

This one works now : https://wordpress.org/plugins/gf-prevent-duplicates/
Thanks anyway

Does not work anymore but...

Silently prevent duplicate Gravity Form submissions.

bradvin

<blockquote>
This plugin is an add-on for the amazing Gravity Forms Plugin. 
 Check out my other free <a href="http://themergency.com/gravity-forms-addon-plugins/" rel="nofollow ugc">Add-ons for Gravity Forms</a>
</blockquote>
Compatible with Gravity Forms v1.7.2
Requires at least v1.5 of Gravity Forms
“Ready Classes” were introduced in Gravity Forms 1.5. Using these new classes, you can easily create more advanced alternative layouts for the fields in your forms. Excellent idea, however, the problem is you always need to remember what the exact class name is. Now with the CSS Ready class selector, you don’t need to remember. Simply click on a button to lauch the popup and choose the class you want to add from the list.
features
<ul>
<li>Convenient button added under the advanced tab next to the “CSS Class Name” field</li>
<li>Clean and simple popup that lists all the “Ready Classes”</li>
<li>Add more than one “Ready Class”</li>
<li>Double click a “Ready Class” to add it and auto-close the popup</li>
</ul>

Gravity Forms CSS Ready Class Selector

Easily select a CSS "Ready Class" for your fields within Gravity Forms

Gravity Forms Duplicate Prevention vs Gravity Forms CSS Ready Class Selector