public RenderContext::update(&$element)
Updates the current frame of the stack.
Parameters
array &$element: The element of the render array that has just been rendered. The stack frame for this element will be updated with the bubbleable rendering metadata of this element.
File
- core/lib/Drupal/Core/Render/RenderContext.php, line 24
Class
- RenderContext
- The render context: a stack containing bubbleable rendering metadata.
Namespace
Drupal\Core\Render
Code
public function update(&$element) {
// The latest frame represents the bubbleable metadata for the subtree.
$frame = $this->pop();
// Update the frame, but also update the current element, to ensure it
// contains up-to-date information in case it gets render cached.
$updated_frame = BubbleableMetadata::createFromRenderArray($element)->merge($frame);
$updated_frame->applyTo($element);
$this->push($updated_frame);
}
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