public function InOperator::reduceValueOptions

When using exposed filters, we may be required to reduce the set.

File

core/modules/views/src/Plugin/views/filter/InOperator.php, line 261

Class

InOperator

Namespace

Code

public function reduceValueOptions($input = NULL) {
  if (!isset($input)) {
    $input = $this->valueOptions;
  }

  // Because options may be an array of strings, or an array of mixed arrays
  // and strings (optgroups), or an array of objects, or a form of Markup, we
  // have to step through and handle each one individually.
  $options = [];
  foreach ($input as $id => $option) {
    if (is_array($option)) {
      $options[$id] = $this
        ->reduceValueOptions($option);
      continue;
    }
    elseif (is_object($option) && !$option instanceof MarkupInterface) {
      $keys = array_keys($option->option);
      $key = array_shift($keys);
      if (isset($this->options['value'][$key])) {
        $options[$id] = $option;
      }
    }
    elseif (isset($this->options['value'][$id])) {
      $options[$id] = $option;
    }
  }
  return $options;
}