https://legacy.forums.gravityhelp.com/topic/adding-new-fields-with-php Gravity Support Forums Topic: Adding New Fields With PHP en-US Mon, 20 Apr 2026 02:49:24 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/adding-new-fields-with-php#post-245332 Thu, 09 May 2013 22:17:34 +0000 cgrymala 245332@https://legacy.forums.gravityhelp.com/ <p>I am trying to set up a form (integrated with Authorize.net) that will basically act as a "checkout" for an order form I need to set up. The order form will have anywhere from 100-500 different options, but each customer will probably never choose more than 5 of them at any time.</p> <p>Because of the nature of the items on the order form (they change extremely regularly), I have to generate that initial order form dynamically (outside of Gravity Forms).</p> <p>Basically, once the user submits that initial form, I want to dynamically add a new hidden product field for each product they chose to the Gravity Form used for checkout.</p> <p>Which filters/actions do I need to hook into in order to add these hidden product fields dynamically? </p> <p>I assume I'll have to hook into the gform_pre_render filter in order to add the hidden fields to the form itself when it's loaded on the front-end, but what other filters do I need to hook into in order to make sure those product choices are stored in the database, sent appropriately to Authorize.net, and included in any notification emails that are sent? </p> <p>Also, is there any documentation on the structure of hidden product fields so that I know what information to add to the form object? Thanks. </p>