public function Condition::exists in Drupal 9

Same name in this branch

1. 9 core/lib/Drupal/Core/Database/Query/Condition.php \Drupal\Core\Database\Query\Condition::exists()
2. 9 core/lib/Drupal/Core/Config/Entity/Query/Condition.php \Drupal\Core\Config\Entity\Query\Condition::exists()
3. 9 core/lib/Drupal/Core/Entity/Query/Sql/Condition.php \Drupal\Core\Entity\Query\Sql\Condition::exists()
4. 9 core/lib/Drupal/Core/Entity/Query/Null/Condition.php \Drupal\Core\Entity\Query\Null\Condition::exists()

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/Entity/Query/Null/Condition.php \Drupal\Core\Entity\Query\Null\Condition::exists()
2. 10 core/lib/Drupal/Core/Entity/Query/Null/Condition.php \Drupal\Core\Entity\Query\Null\Condition::exists()

Queries for the existence of a field.

Parameters

string $field:

string $langcode:

Return value

$this

Overrides ConditionInterface::exists

See also

\Drupal\Core\Entity\Query\QueryInterface::exists()

File

core/lib/Drupal/Core/Entity/Query/Null/Condition.php, line 21

Class

Condition

Defines the condition class for the null entity query.

Namespace

Drupal\Core\Entity\Query\Null

Code

public function exists($field, $langcode = NULL) {
  return $this
    ->condition($field, NULL, 'IS NOT NULL', $langcode);
}