Validate the options form.
Overrides FilterPluginBase::valueValidate
protected function valueValidate($form, &$form_state) {
// We only validate if they've chosen the text field style.
if ($this->options['type'] != 'textfield') {
return;
}
$values = drupal_explode_tags($form_state['values']['options']['value']);
$tids = $this
->validate_term_strings($form['value'], $values);
if ($tids) {
$form_state['values']['options']['value'] = $tids;
}
}