public ClassResolver::getInstanceFromDefinition($definition)
Returns a class instance with a given class definition.
In contrast to controllers you don't specify a method.
Parameters
string $definition: A class name or service name.
Return value
object The instance of the class.
Throws
\InvalidArgumentException If $class is not a valid service identifier and the class does not exist.
Overrides ClassResolverInterface::getInstanceFromDefinition
File
- core/lib/Drupal/Core/DependencyInjection/ClassResolver.php, line 18
Class
- ClassResolver
- Implements the class resolver interface supporting class names and services.
Namespace
Drupal\Core\DependencyInjection
Code
public function getInstanceFromDefinition($definition) {
if ($this->container->has($definition)) {
$instance = $this->container->get($definition);
}
else {
if (!class_exists($definition)) {
throw new \InvalidArgumentException(sprintf('Class "%s" does not exist.', $definition));
}
if (is_subclass_of($definition, 'Drupal\Core\DependencyInjection\ContainerInjectionInterface')) {
$instance = $definition::create($this->container);
}
else {
$instance = new $definition();
}
}
if ($instance instanceof ContainerAwareInterface) {
$instance->setContainer($this->container);
}
return $instance;
}
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