function drupal_render_children in Drupal 8

Same name and namespace in other branches

1. 7 includes/common.inc \drupal_render_children()

Renders children of an element and concatenates them.

Parameters

array $element: The structured array whose children shall be rendered.

array $children_keys: (optional) If the keys of the element's children are already known, they can be passed in to save another run of \Drupal\Core\Render\Element::children().

Return value

string|\Drupal\Component\Render\MarkupInterface The rendered HTML of all children of the element.

See also

\Drupal\Core\Render\RendererInterface::render()

https://www.drupal.org/node/2912757

File

core/includes/common.inc, line 835

Common functions that many Drupal modules will need to reference.

Code

function drupal_render_children(&$element, $children_keys = NULL) {
  if ($children_keys === NULL) {
    $children_keys = Element::children($element);
  }
  $output = '';
  foreach ($children_keys as $key) {
    if (!empty($element[$key])) {
      $output .= \Drupal::service('renderer')
        ->render($element[$key]);
    }
  }
  return Markup::create($output);
}