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Validation of a number field

  1. I have a form which asks whether a registrant is requesting vegetarian meal(s). If the answer is yes, then 3 number fields appear asking how many meals for adults, older children, and younger children. If the registrant checks "yes" to request vegetarian meals but then doesn't modify any of the 3 number fields, I want the form to prompt the registrant to choose a non-zero number in at least 1 of those 3 number fields. So I've created a number field (id 39) in the form (id 12) which totals the 3 number fields, and added the following code to functions.php

    add_filter("gform_field_validation_12_39", "custom_validation", 10, 4);
    function custom_validation($result, $value, $form, $field){
        if($result["is_valid"] && intval($value) == 0){
            $result["is_valid"] = false;
            $result["message"] = "Total vegetarian meals must be greater than zero";
        return $result;

    But it doesn't generate an error message if I leave all the 3 number fields as zero. What am I missing?

    Posted 8 years ago on Wednesday March 20, 2013 | Permalink
  2. Can you please provide a link to the page on your site where the form is embedded so we can take a look at it?

    Posted 8 years ago on Thursday March 21, 2013 | Permalink
  3. The form is here:

    Posted 8 years ago on Friday March 22, 2013 | Permalink
  4. I received a message "Registration is now closed. If you are interested in attending, please contact Jake Werner directly at 581-9277." when trying to access the form on that page. If you need help with this, please put a copy of the form on a page without scheduling the end date so we can take a look at it. Thank you.

    Posted 8 years ago on Sunday March 24, 2013 | Permalink