MachForm Community Forums Topic: Extended validation in form

MachForm Community Forums Topic: Extended validation in form https://www.machform.com/forums/ MachForm Community Forums Topic: Extended validation in form en Mon, 04 May 2026 02:03:43 +0000 yuniar on "Extended validation in form" https://www.machform.com/forums/topic/extended-validation-in-form#post-6986 Thu, 20 Aug 2009 11:59:17 +0000 yuniar 6986@https://www.machform.com/forums/ I must say this one pretty hard to explain, since the backend processing is pretty complex. Basically you'll need to modify one file "includes/post-functions.php" file. Inside the file, there is the main form processing function "process_form()" which handle all form validations and submission. You'll need to dig into this function and play around to get clear understanding with the code. Sorry if I can't be more helpful! PHPWimp on "Extended validation in form" https://www.machform.com/forums/topic/extended-validation-in-form#post-6957 Tue, 18 Aug 2009 11:27:52 +0000 PHPWimp 6957@https://www.machform.com/forums/ Hi all, I am looking to use MachForm for my field validation, but I also have additional application validation that needs to occur. Here are 2 examples: 1) My user enters an email address. I will have MachForm check for duplicates, but I also need to be able to check the primary database to determine if the email address already exists. This would indicate that the user has already registered, so I need to throw an error. I would like that error to come up just as the errors do for field validation, but with a different message. So, the error would say 'That email address is already taken. Please enter a new email address.'. 2) My user enters a value they want to use for an application. I have Perl scripts that go and evaluate that code. It is easy enough to call Perl from PHP, but where do I insert it, and how do I get the result of that call to be used in the PHP scripts to flag an error. In other words, they type in the word 'cat'. I check inventory, and we have no cats. So, I throw an error saying 'Parameter cat is unknown. Please re-enter.' I have a ton of functionality in Perl that I would like to keep, and I want the user to stay on the same form until I have validated everything and written the data to my primary database for the application, which again is no problem through my Perl scripts. But, where do I put the call to the Perl scripts, and how can I add the error messages back to the JS error handling? Thank all, I really appreciate the help.