How to Prevent Form Resubmission.

Hey guys?

I have created a form with chronoforms which is capable of validating fields (dates, blank fields, etc) as one enters information in them before it can be submitted and added to the database.

I wanted to know if there is a way I can prevent a user from resubmitting the same form once it has been added to the database.

As in, before a form is submitted, is it possible for the system to check if a certain key field is already in the database and then inform the user as such hence preventing such an action??

I Hope am clear.

How do I go about this??

Am using Joomla v1.5.15 and ChronoForms v3.1 RC5.1.

Thanks.

Hi rading,

It's certainly possible - just how depends on what you are checking. How will you know that they have already submitted? What is the test?

Bob

Thanks for replying Bob.

Well, I think its better I told you what the form does. The form is a fee payment form where a user fills in details of the payee as well as information about his payment options. These could be the cheque number, or a bank slip number, etc, but only one payment option can be chosen at a time.

Whichever payment option is chosen, a unique number which identifies that payment option (either a cheque or a bank slip) is filled after selecting the payment option. I have called this field cheque_no, so I guess the check has to be made against this field. That way if the user forgets whether or not a payment has been recorded, it can prevent it from being submitted again.

Hi rading,

The simplest way to chck this is to add code to the server-side validation box to check for a duplicate cheque_no.

Bob

PS Prettier to do it with AJAX, but you'd still need the server-side code for backup.