Alter admin theme

Question

I would like to make a small change in the admin/structure/taxonomy/ page.

I need to add one more operation to the edit button on the page.

Its the template_preprocess_links() function I need to alter I believe. I have created a sub theme of the admin theme (Seven). Set it default admin theme. Created mytheme_preprocess_links() function but it does not run.

Any ideas?

Answer 1

To add/alter entity operations you can use hook_entity_operation_alter:

function hook_entity_operation_alter(array &$operations, \Drupal\Core\Entity\EntityInterface $entity) {

  if ($entity instanceof \Drupal\taxonomy\TermInterface) {
    $operations['foo_operation'] = [
      'title' => 'Foo',
      'url' => \Drupal\Core\Url::fromRoute('bar', ['taxonomy_term' => $entity->id()]),
      'weight' => 10,
    ];
  }
}