A regular input can be marked as valid or invalid by setting the is-valid or is-invalid class on the form-outline after a server-side validation when generating the markup using Blade or Twig for example.

How can you set a select as valid / invalid? The div class="form-outline" is generated by MDB when creating a new instance and there doesn't seem to be a data-mdb-* attribute I can set to hint the lib to automatically add is-valid or is-invalid to the generated wrapper.

data-mdb-validation works only with browser validation and only marks the input as being required.

Do I have to add the classes to the select-input wrapper with JS after the component was initialized?