I've been through the example and docs on this module and the fapi_validation module to see if I can understand how to validate a non-required text field which is also a multi-value field (either fixed or unlimited). I have tried using hook_form_alter() to achieve this without success. The site in question is Drupal 6 and the form is a node/add with various cck fields added.

Am I missing something obvious, here is my test code:

function MYMODULE_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'booking_node_form') {
    $form['field_code']['#rules'] = array('rule' => 'alpha_numeric', 'error' => 'Please only enter alpha numeric characters');
  }
}

Any thoughts?

Comments

attiks’s picture

attiks commented

Can you check the drupal.settings in the html to see what's in there

ghazlewood’s picture

ghazlewood
Location Hampshire, UK
commented

There's nothing for the field in question in the Drupal.settings - I had checked there but assumed that my code was wrong in some way. Do I need to make any changes considering this is not a required field (but still needs validating if it is provided, or that it is a multi-value text field?

attiks’s picture

attiks commented

Just as a test: if you make the field required, does it have your validation?

ghazlewood’s picture

ghazlewood
Location Hampshire, UK
commented

Making it required but leaving it as a multi-value field makes no difference. It gets validated as required but the new rule doesn't appear. Changing it to be a single value text field, both required and not also doesn't work. I'm sure I'm missing the obvious here but whichever way I try it I can't get it to validate a custom rule.

Thanks for the suggestions!

ghazlewood’s picture

ghazlewood
Location Hampshire, UK
commented

Looks like the rule is firing (although not perfectly) when i submit the form, just not when using JS with Clientside Validation.

attiks’s picture

attiks commented

Did you define your rule in javascript as well? See #1281494: Extending Client side validation to build custom form validations. and/or #1286870: example for defining extra validation rules

ghazlewood’s picture

ghazlewood
Location Hampshire, UK
commented
Status: Active » Closed (works as designed)

No I hadn't thought this through before, I was expecting some magic pixie dust to make it work without having to write any more code. Silly me. I think I understand what I need to do now, apologies.