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I have a custom entity, with the template my-custom-entity--my-entity.html.twig.

How do I access the ID in the template? I can do this by implementing hook_preprocess_entity, but am wondering if the ID is already available in the template.

2
  • 1
    Did you try passing the entity object as a variable and then {{ entity_object_name.id() }}?
    – Kevin
    Aug 10, 2020 at 21:46
  • I had just passed the ID as a variable. I guess I could pass the whole object in case I need other properties from it. I was mainly asking if the ID or the entity object is already available to the templates natively.
    – John
    Aug 11, 2020 at 14:35

1 Answer 1

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You can just add the full object to a twig variable, so

$vars['myentity'] = $my_entity;

and then access with

{{ myentity.id }}

A bit more elegant is to implement hook_theme:

/**
 * Implements hook_theme().
 */
function MODULENAME_theme() {
  return [
    'customentity' => [
      'render element' => 'elements',
    ],
  ];
}

and a preprocess function to expose it to twigs customentity and maybe content variables:

function template_preprocess_customentity(&$variables) {
  $variables['customentity'] = $variables['elements']['#node'];

  // Helpful $content variable for templates.
  $variables += ['content' => []];
  foreach (Element::children($variables['elements']) as $key) {
    $variables['content'][$key] = $variables['elements'][$key];
  }
}
2
  • I think that would need to be {{ myentity.id() }}. Thanks for the answer. I had done something similar to this. What I was really trying to figure out here is if the entity id is already exposed natively, but I am guessing it is not.
    – John
    Aug 11, 2020 at 14:33
  • No, it isn't. Except your using a content type ;) Sometimes a custom entity is not worth the effort .. especially when it comes to make it fieldable, translateable or revisionable.
    – rémy
    Aug 11, 2020 at 21:14

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