Conditional logic applied to 'Required'

• permanyer

• March 9, 2016 at 8:11 pm

Hello,

Any hint on how to face:

Make a field required only if another field is true.

Thanks

• James

• March 10, 2016 at 4:21 pm

Hi @permanyer

I think you can use the “acf/validate_value” hook to do it. You can get the value from other fields from the $_POST[‘acf’][‘field_123456789’] variable, where ‘field_123456789’ is the key of the field you want to check.

I hope this helps.

• permanyer

• March 10, 2016 at 8:58 pm

That is exactly it. Thank you!

My example:

add_filter('acf/validate_value/name=event_category',	'validate_empty_fields', 10, 4);

function validate_empty_fields( $valid, $value, $field, $input ){
	
	// bail early if value is already invalid
	if( !$valid ) {return $valid; }
	

	$is_event_public = $_POST['acf']['field_55420ab8d2eb2']; // This field is a checkbox
	
	if($is_event_public){
		if(!$value){
			$valid = __('This field is required for public events');
		}
	}

	return $valid;
	
}