Adds a child render element.

Parameters

int|string $name: The name of the child. Can also be an integer when the child is a delta.

array|\Drupal\Core\Render\Element\ElementInterface $child: A render array or a render object.

Return value

\Drupal\Core\Render\Element\ElementInterface The added child as a render object.

Overrides ElementInterface::addChild

1 call to RenderElementBase::addChild()

RenderElementBase::createChild in core/lib/Drupal/Core/Render/Element/RenderElementBase.php

Creates a render object and attaches it to the current render object.

File

core/lib/Drupal/Core/Render/Element/RenderElementBase.php, line 664

Class

RenderElementBase

Provides a base class for render element plugins.

Namespace

Drupal\Core\Render\Element

Code

public function addChild(string|int $name, ElementInterface|array &$child) : ElementInterface {
  if ($name[0] === '#') {
    throw new \LogicException('The name of children can not start with a #.');
  }
  $childObject = $this->elementInfoManager()
    ->fromRenderable($child);
  $childObject->renderParent = $this;
  $childObject->renderParentName = $name;
  $this->storage[$name] =& $childObject->toRenderable();
  return $childObject;
}

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