HtmlTag::preRenderHtmlTag

public static HtmlTag::preRenderHtmlTag($element)

Pre-render callback: Renders a generic HTML tag with attributes into #markup.

Parameters

array $element: An associative array containing:

• #tag: The tag name to output. Typical tags added to the HTML HEAD:
  • meta: To provide meta information, such as a page refresh.
  • link: To refer to stylesheets and other contextual information.
  • script: To load JavaScript.

  The value of #tag is escaped.

• #attributes: (optional) An array of HTML attributes to apply to the tag. The attributes are escaped, see \Drupal\Core\Template\Attribute.
• #value: (optional) A string containing tag content, such as inline CSS. The value of #value will be XSS admin filtered if it is not safe.
• #noscript: (optional) If TRUE, the markup (including any prefix or suffix) will be wrapped in a <noscript> element. (Note that passing any non-empty value here will add the <noscript> tag.)

Return value

array

File

core/lib/Drupal/Core/Render/Element/HtmlTag.php, line 81

Class

HtmlTag

Provides a render element for any HTML tag, with properties and value.

Namespace

Drupal\Core\Render\Element

Code

public static function preRenderHtmlTag($element) {
  $attributes = isset($element['#attributes']) ? new Attribute($element['#attributes']) : '';

  // An HTML tag should not contain any special characters. Escape them to
  // ensure this cannot be abused.
  $escaped_tag = HtmlUtility::escape($element['#tag']);
  $markup = '<' . $escaped_tag . $attributes;
  // Construct a void element.
  if (in_array($element['#tag'], self::$voidElements)) {
    $markup .= " />\n";
  }
  // Construct all other elements.
  else {
    $markup .= '>';
    $markup .= $element['#value'] instanceof MarkupInterface ? $element['#value'] : Xss::filterAdmin($element['#value']);
    $markup .= '</' . $escaped_tag . ">\n";
  }
  if (!empty($element['#noscript'])) {
    $markup = "<noscript>$markup</noscript>";
  }
  $element['#markup'] = Markup::create($markup);
  return $element;
}