Commit df881baf authored by webchick's avatar webchick
Browse files

Issue #2341461 by ashutoshsngh, esod, quietone: Remove usage of form_options_flatten()

parent eda7b8a8
......@@ -12,6 +12,7 @@
use Drupal\Core\Form\FormStateInterface;
use Drupal\views\Plugin\views\display\DisplayPluginBase;
use Drupal\views\ViewExecutable;
use Drupal\Core\Form\OptGroup;
* Simple filter to handle matching of multiple options selectable via checkboxes
......@@ -435,7 +436,7 @@ public function validate() {
// Some filter_in_operator usage uses optgroups forms, so flatten it.
$flat_options = form_options_flatten($this->valueOptions, TRUE);
$flat_options = OptGroup::flattenOptions($this->valueOptions);
// Remove every element which is not known.
foreach ($this->value as $value) {
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