public function Context::getContextValue in Drupal 9

Same name in this branch

1. 9 core/lib/Drupal/Core/Plugin/Context/Context.php \Drupal\Core\Plugin\Context\Context::getContextValue()
2. 9 core/lib/Drupal/Component/Plugin/Context/Context.php \Drupal\Component\Plugin\Context\Context::getContextValue()

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/Plugin/Context/Context.php \Drupal\Core\Plugin\Context\Context::getContextValue()

Gets the context value.

Return value

mixed The currently set context value, or NULL if it is not set.

Overrides Context::getContextValue

File

core/lib/Drupal/Core/Plugin/Context/Context.php, line 61

Class

Context

A Drupal specific context wrapper class.

Namespace

Drupal\Core\Plugin\Context

Code

public function getContextValue() {
  if (!isset($this->contextData)) {
    $definition = $this
      ->getContextDefinition();
    $default_value = $definition
      ->getDefaultValue();
    if (isset($default_value)) {

      // Keep the default value here so that subsequent calls don't have to
      // look it up again.
      $this
        ->setContextValue($default_value);
    }
    elseif ($definition
      ->isRequired()) {
      $type = $definition
        ->getDataType();
      throw new ContextException("The '{$type}' context is required and not present.");
    }
    return $default_value;
  }
  return $this
    ->getTypedDataManager()
    ->getCanonicalRepresentation($this->contextData);
}