68 lines
2.4 KiB
PHP
68 lines
2.4 KiB
PHP
<?php
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namespace Drupal\Tests;
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use Drupal\Core\Entity\EntityInterface;
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use Drupal\Core\Render\Element;
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/**
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* Provides helper methods to deal with building entity views in tests.
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*/
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trait EntityViewTrait {
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/**
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* Builds the renderable view of an entity.
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*
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* Entities postpone the composition of their renderable arrays to #pre_render
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* functions in order to maximize cache efficacy. This means that the full
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* renderable array for an entity is constructed in
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* \Drupal::service('renderer')->render(). Some tests require the complete
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* renderable array for an entity outside of the render process in order to
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* verify the presence of specific values. This method isolates the steps in
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* the render process that produce an entity's renderable array.
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*
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* @param \Drupal\Core\Entity\EntityInterface $entity
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* The entity to prepare a renderable array for.
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* @param string $view_mode
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* (optional) The view mode that should be used to build the entity.
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* @param null $langcode
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* (optional) For which language the entity should be prepared, defaults to
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* the current content language.
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*
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* @return array
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*
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* @see \Drupal\Core\Render\RendererInterface::render()
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*/
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protected function buildEntityView(EntityInterface $entity, $view_mode = 'full', $langcode = NULL) {
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$ensure_fully_built = function (&$elements) use (&$ensure_fully_built) {
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// If the default values for this element have not been loaded yet, populate
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// them.
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if (isset($elements['#type']) && empty($elements['#defaults_loaded'])) {
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$elements += \Drupal::service('element_info')->getInfo($elements['#type']);
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}
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// Make any final changes to the element before it is rendered. This means
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// that the $element or the children can be altered or corrected before the
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// element is rendered into the final text.
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if (isset($elements['#pre_render'])) {
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foreach ($elements['#pre_render'] as $callable) {
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$elements = call_user_func($callable, $elements);
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}
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}
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// And recurse.
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$children = Element::children($elements, TRUE);
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foreach ($children as $key) {
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$ensure_fully_built($elements[$key]);
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}
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};
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$render_controller = $this->container->get('entity_type.manager')->getViewBuilder($entity->getEntityTypeId());
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$build = $render_controller->view($entity, $view_mode, $langcode);
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$ensure_fully_built($build);
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return $build;
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}
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}
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