How to validate if at least one of multiple input fields is entered?

Question

I have a form with 3 fields, and submit button. when button clicked, if none is entered in 3 fields, throw validation message. If any one of the 3 fields are entered process

Answer 1

At least for iceFaces another approach to validate across multiple fields, especially when the validation is more complex than just "required", is to use application level validation inside your backing bean.

@see Custom Validator in Backing Beans

• Add the validator attribute to you rcomponent and point it to teh validation method in your backing bean
• inside teh backing bean you can now access all form fields and do cross validation

Regards

Rob