operators example

/** * The value options. */
  public ?array $valueOptions;

  /** * {@inheritdoc} */
  public function operatorOptions($which = 'title') {
    $options = [];
    foreach ($this->operators() as $id => $info) {
      $options[$id] = $info[$which];
    }

    return $options;
  }

  /** * Returns an array of operator information. * * @return array */
  

    }

    return $operators;
  }

  /** * Build strings from the operators() for 'select' options. */
  public function operatorOptions($which = 'title') {
    $options = [];
    foreach ($this->operators() as $id => $info) {
      $options[$id] = $info[$which];
    }

    return $options;
  }

  public function adminSummary() {
    if ($this->isAGroup()) {
      return $this->t('grouped');
    }
    if (!empty($this->options['exposed'])) {
      

$operator = $this->operator;
    }

    $this->validateValidTime($this->options['expose']['identifier'], $form_state, $operator, $value);

  }

  /** * Validate that the time values convert to something usable. */
  public function validateValidTime(&$form, FormStateInterface $form_state, $operator, $value) {
    $operators = $this->operators();

    if ($operators[$operator]['values'] == 1) {
      $convert = strtotime($value['value']);
      if (!empty($form['value']) && ($convert == -1 || $convert === FALSE)) {
        $form_state->setError($form['value'], $this->t('Invalid date format.'));
      }
    }
    elseif ($operators[$operator]['values'] == 2) {
      $min = strtotime($value['min']);
      if ($min == -1 || $min === FALSE) {
        $form_state->setError($form['min'], $this->t('Invalid date format.'));
      }

  /** * Determines if the given grouped filter entry has a valid value. * * @param array $group * A group entry as defined by buildGroupForm(). * * @return bool */
  protected function hasValidGroupedValue(array $group) {
    $operators = $this->operators();
    if ($operators[$group['operator']]['values'] == 0) {
      // Some filters, such as "is empty," do not require a value to be       // specified in order to be valid entries.       return TRUE;
    }
    else {
      if (is_string($group['value'])) {
        return trim($group['value']) != '';
      }
      elseif (is_array($group['value'])) {
        // Some filters allow multiple options to be selected (for example, node

    }

    return $operators;
  }

  /** * Provide a list of all the numeric operators. */
  public function operatorOptions($which = 'title') {
    $options = [];
    foreach ($this->operators() as $id => $info) {
      $options[$id] = $info[$which];
    }

    return $options;
  }

  protected function operatorValues($values = 1) {
    $options = [];
    foreach ($this->operators() as $id => $info) {
      if ($info['values'] == $values) {
        $options[] = $id;
      }

if (!$form_state->get('exposed')) {
      $this->helper->buildOptionsForm($form, $form_state);
    }
  }

  /** * {@inheritdoc} */
  public function ensureMyTable() {
    // Defer to helper if the operator specifies it.     $info = $this->operators();
    if (isset($info[$this->operator]['ensure_my_table']) && $info[$this->operator]['ensure_my_table'] == 'helper') {
      return $this->helper->ensureMyTable();
    }

    return parent::ensureMyTable();
  }

  protected function opHelper() {
    if (empty($this->value)) {
      return;
    }
    

      'age' => [
        'id' => 'age',
        'table' => 'views_test_data',
        'field' => 'age',
        'relationship' => 'none',
      ],
    ]);

    $view->initHandlers();

    $id_operators = $view->filter['id']->operators();
    $age_operators = $view->filter['age']->operators();

    $this->assertFalse(isset($id_operators['empty']));
    $this->assertFalse(isset($id_operators['not empty']));
    $this->assertTrue(isset($age_operators['empty']));
    $this->assertTrue(isset($age_operators['not empty']));
  }

  protected function getGroupedExposedFilters() {
    $filters = [
      'age' => [
        

    }

    return $operators;
  }

  /** * Build strings from the operators() for 'select' options. */
  public function operatorOptions($which = 'title') {
    $options = [];
    foreach ($this->operators() as $id => $info) {
      $options[$id] = $info[$which];
    }

    return $options;
  }

  protected function operatorValues($values = 1) {
    $options = [];
    foreach ($this->operators() as $id => $info) {
      if (isset($info['values']) && $info['values'] == $values) {
        $options[] = $id;
      }

class GroupByNumeric extends NumericFilter {

  public function query() {
    $this->ensureMyTable();
    $field = $this->getField();

    $info = $this->operators();
    if (!empty($info[$this->operator]['method'])) {
      $this->{$info[$this->operator]['method']}($field);
    }
  }

  protected function opBetween($field) {
    $placeholder_min = $this->placeholder();
    $placeholder_max = $this->placeholder();
    if ($this->operator == 'between') {
      $this->query->addHavingExpression($this->options['group'], "$field >= $placeholder_min", [$placeholder_min => $this->value['min']]);
      $this->query->addHavingExpression($this->options['group'], "$field <= $placeholder_max", [$placeholder_max => $this->value['max']]);
    }

      if (count($fields) == 1) {
        $expression = reset($fields);
      }
      else {
        // Multiple fields are separated by 3 spaces so that so that search         // strings that contain spaces are still only matched to single field         // values and not to multi-field values that exist only because we do         // the concatenation/LIKE trick.         $expression = implode(", ' ', ", $fields);
        $expression = "CONCAT_WS(' ', $expression)";
      }
      $info = $this->operators();
      if (!empty($info[$this->operator]['method'])) {
        $this->{$info[$this->operator]['method']}($expression);
      }
    }
  }

  /** * {@inheritdoc} */
  public function validate() {
    $errors = parent::validate();
    

public function getValueOptions() {
    $this->valueOptions = user_role_names(TRUE);
    unset($this->valueOptions[RoleInterface::AUTHENTICATED_ID]);
    return $this->valueOptions;

  }

  /** * Override empty and not empty operator labels to be clearer for user roles. */
  public function operators() {
    $operators = parent::operators();
    $operators['empty']['title'] = $this->t("Only has the 'authenticated user' role");
    $operators['not empty']['title'] = $this->t("Has roles in addition to 'authenticated user'");
    return $operators;
  }

  /** * {@inheritdoc} */
  public function calculateDependencies() {
    $dependencies = [];

    

/** * The node table. */
  protected ?string $node_table;

  public function query() {
    $this->ensureMyTable();
    $this->node_table = $this->query->ensureTable('node', $this->relationship);

    $field = "GREATEST(" . $this->node_table . ".changed, " . $this->tableAlias . ".last_comment_timestamp)";

    $info = $this->operators();
    if (!empty($info[$this->operator]['method'])) {
      $this->{$info[$this->operator]['method']}($field);
    }
  }

}