function hook_ENTITY_TYPE_view

Act on entities of a particular type being assembled before rendering.

Parameters

array &$build: A renderable array representing the entity content. The module may add elements to $build prior to rendering. The structure of $build is a renderable array as expected by \Drupal\Core\Render\RendererInterface::render().

\Drupal\Core\Entity\EntityInterface $entity: The entity object.

\Drupal\Core\Entity\Display\EntityViewDisplayInterface $display: The entity view display holding the display options configured for the entity components.

string $view_mode: The view mode the entity is rendered in.

See also

hook_ENTITY_TYPE_view_alter()

hook_entity_view()

Related topics

File

core/lib/Drupal/Core/Entity/entity.api.php, line 1584

Code

function hook_ENTITY_TYPE_view(array &$build, \Drupal\Core\Entity\EntityInterface $entity, \Drupal\Core\Entity\Display\EntityViewDisplayInterface $display, $view_mode) : void {
    // Only do the extra work if the component is configured to be displayed.
    // This assumes a 'my_module_addition' extra field has been defined for the
    // entity bundle in hook_entity_extra_field_info().
    if ($display->getComponent('my_module_addition')) {
        $build['my_module_addition'] = [
            '#markup' => my_module_addition($entity),
            '#theme' => 'my_module_my_additional_field',
        ];
    }
}