public static RenderElement::preRenderGroup($element)
Adds members of this group as actual elements for rendering.
Parameters
array $element: An associative array containing the properties and children of the element.
Return value
array The modified element with all group members.
File
- core/lib/Drupal/Core/Render/Element/RenderElement.php, line 160
Class
- RenderElement
- Provides a base class for render element plugins.
Namespace
Drupal\Core\Render\Element
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | public static function preRenderGroup($element) { // The element may be rendered outside of a Form API context. if (!isset($element['#parents']) || !isset($element['#groups'])) { return $element; } // Inject group member elements belonging to this group. $parents = implode('][', $element['#parents']); $children = Element::children($element['#groups'][$parents]); if (!empty($children)) { foreach ($children as $key) { // Break references and indicate that the element should be rendered as // group member. $child = (array) $element['#groups'][$parents][$key]; $child['#group_details'] = TRUE; // Inject the element as new child element. $element[] = $child; $sort = TRUE; } // Re-sort the element's children if we injected group member elements. if (isset($sort)) { $element['#sorted'] = FALSE; } } if (isset($element['#group'])) { // Contains form element summary functionalities. $element['#attached']['library'][] = 'core/drupal.form'; $group = $element['#group']; // If this element belongs to a group, but the group-holding element does // not exist, we need to render it (at its original location). if (!isset($element['#groups'][$group]['#group_exists'])) { // Intentionally empty to clarify the flow; we simply return $element. } // If we injected this element into the group, then we want to render it. elseif (!empty($element['#group_details'])) { // Intentionally empty to clarify the flow; we simply return $element. } // Otherwise, this element belongs to a group and the group exists, so we do // not render it. elseif (Element::children($element['#groups'][$group])) { $element['#printed'] = TRUE; } } return $element;} |
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