File
- drupal/core/modules/views/lib/Drupal/views/Plugin/views/filter/String.php, line 340
- Definition of Drupal\views\Plugin\views\filter\String.
Class
- String
- Basic textfield filter to handle string filtering commands
including equality, like, not like, etc.
Namespace
Drupal\views\Plugin\views\filter
Code
function op_empty($field) {
if ($this->operator == 'empty') {
$operator = "IS NULL";
}
else {
$operator = "IS NOT NULL";
}
$this->query
->add_where($this->options['group'], $field, NULL, $operator);
}