public function NodeRouteContext::getRuntimeContexts in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/node/src/ContextProvider/NodeRouteContext.php \Drupal\node\ContextProvider\NodeRouteContext::getRuntimeContexts()
2. 10 core/modules/node/src/ContextProvider/NodeRouteContext.php \Drupal\node\ContextProvider\NodeRouteContext::getRuntimeContexts()

Gets runtime context values for the given context IDs.

For context-aware plugins to function correctly, all of the contexts that they require must be populated with values. So this method should set a value for each context that it adds. For example:

  // Determine a specific node to pass as context to a block.
  $node = ...

  // Set that specific node as the value of the 'node' context.
  $context = EntityContext::fromEntity($node);
  return ['node' => $context];

On the other hand, there are cases, on which providers no longer are possible to provide context objects, even without the value, so the caller should not expect it.

Parameters

string[] $unqualified_context_ids: The requested context IDs. The context provider must only return contexts for those IDs.

Return value

\Drupal\Core\Plugin\Context\ContextInterface[] The determined available contexts, keyed by the unqualified context_id.

Overrides ContextProviderInterface::getRuntimeContexts

See also

\Drupal\Core\Plugin\Context\ContextProviderInterface:getAvailableContexts()

File

core/modules/node/src/ContextProvider/NodeRouteContext.php, line 41

Class

NodeRouteContext

Sets the current node as a context on node routes.

Namespace

Drupal\node\ContextProvider

Code

public function getRuntimeContexts(array $unqualified_context_ids) {
  $result = [];
  $context_definition = EntityContextDefinition::create('node')
    ->setRequired(FALSE);
  $value = NULL;
  if (($route_object = $this->routeMatch
    ->getRouteObject()) && ($route_contexts = $route_object
    ->getOption('parameters')) && isset($route_contexts['node'])) {
    if ($node = $this->routeMatch
      ->getParameter('node')) {
      $value = $node;
    }
  }
  elseif ($this->routeMatch
    ->getRouteName() == 'node.add') {
    $node_type = $this->routeMatch
      ->getParameter('node_type');
    $value = Node::create([
      'type' => $node_type
        ->id(),
    ]);
  }
  $cacheability = new CacheableMetadata();
  $cacheability
    ->setCacheContexts([
    'route',
  ]);
  $context = new Context($context_definition, $value);
  $context
    ->addCacheableDependency($cacheability);
  $result['node'] = $context;
  return $result;
}