hook_entity_view(array &$build, \Drupal\Core\Entity\EntityInterface $entity, \Drupal\Core\Entity\Display\EntityViewDisplayInterface $display, $view_mode)
Act on entities being assembled before rendering.
Parameters
&$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_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.
$view_mode: The view mode the entity is rendered in.
See also
Related topics
- Entity CRUD, editing, and view hooks
- Hooks used in various entity operations.
- Hooks
- Define functions that alter the behavior of Drupal core.
File
- core/lib/Drupal/Core/Entity/entity.api.php, line 1284
- Hooks and documentation related to entities.
Code
function hook_entity_view(array &$build, \Drupal\Core\Entity\EntityInterface $entity, \Drupal\Core\Entity\Display\EntityViewDisplayInterface $display, $view_mode) {
// Only do the extra work if the component is configured to be displayed.
// This assumes a 'mymodule_addition' extra field has been defined for the
// entity bundle in hook_entity_extra_field_info().
if ($display->getComponent('mymodule_addition')) {
$build['mymodule_addition'] = array(
'#markup' => mymodule_addition($entity),
'#theme' => 'mymodule_my_additional_field',
);
}
}
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