public static function Element::getVisibleChildren in Render cache 7.2

Returns the visible children of an element.

Parameters

array $elements: The parent element.

Return value

array The array keys of the element's visible children.

File

lib/Drupal/Core/Render/Element.php, line 122

Contains \Drupal\Core\Render\Element.

Class

Element

Provides helper methods for Drupal render elements.

Namespace

Drupal\Core\Render

Code

public static function getVisibleChildren(array $elements) {
  $visible_children = array();
  foreach (static::children($elements) as $key) {
    $child = $elements[$key];

    // Skip un-accessible children.
    if (isset($child['#access']) && !$child['#access']) {
      continue;
    }

    // Skip value and hidden elements, since they are not rendered.
    if (isset($child['#type']) && in_array($child['#type'], array(
      'value',
      'hidden',
    ))) {
      continue;
    }
    $visible_children[$key] = $child;
  }
  return array_keys($visible_children);
}