Address field is collection of other fields that one of them is postal_code.
I wrote a custom validation constraint. It is applied and working. but the error message is showing for all fields of Address field, I just want it for Postal_code, how that is possible?
This is my ZipCodeValueValidator class
<?php
namespace Drupalzip_code_lookupPluginValidationConstraint;
use SymfonyComponentValidatorConstraint;
use SymfonyComponentValidatorConstraintValidator;
/**
* Validates the Zip Code constraint.
*/
class ZipCodeValueValidator extends ConstraintValidator
{
/**
* {@inheritdoc}
*/
public function validate($items, Constraint $constraint)
{
foreach ($items as $item) {
if ($this->validateZip($item)) {
$errorMessage = "This is the new error message I wrote it.";
$this->context->buildViolation($errorMessage)
->atPath('field_billing.postal_code')
->addViolation();
}
}
}
private function validateZip($value)
{
return TRUE;
}
}
And here I set it to the field
<?php
use DrupalCoreEntityEntityTypeInterface;
/**
* Implements hook_entity_bundle_field_info_alter().
*/
function zip_code_lookup_entity_bundle_field_info_alter(&$fields, EntityTypeInterface $entity_type, $bundle)
{
if ($entity_type->id() === 'group') {
if ($bundle == 'subscriber') {
if (isset($fields['field_billing'])) {
$fields['field_billing']->addConstraint('ZipCode', []);
}
}
}
}
