If inline_form_errors is enabled, when adding a custom validation to the address form element, errors pop on each address fields.
This kind of issue was already referenced for
core widgets →
as well as for
Webform onces →
.
An #error_no_message key should be added in a way that error messages shows only once.
Needs work
1.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
When I apply this patch, I no longer get any messages at all. Ideally what we want is the ability to set an error message per subfield
$form_state->setErrorByName('field_mailing_address.zip', t('Error on zip'));