2

I have a field value, which I would like to link to the content (to the node itself, using it in a teaser).

How can I get the URL or at least the ID on field level, to create that link?

  • 1
    Do you mean the ID of the entity (node) that the field that's being rendered is attached to? – Clive Jul 17 at 13:13
3

The node in a field template is the parent entity you find in element['#object'], which you can use to build the path:

{{ path('entity.node.canonical', {'node':  element['#object'].id}) }}
  • Would this also work if the same field is coincidentally used by another entity type (Paragraph) at the same time? Not sure if this is possible at all... – leymannx Jul 17 at 13:21
  • 1
    You wouldn't put this code in a generic field.html.twig, but in a template name suggestion targeting a specific field. If you have the same field name in different entities you can still target the specific one by adding the entity type to the template name. – 4k4 Jul 17 at 13:29
1

You should maybe preprocess you the URL in place. Via template_preprocess_field get the node ID, build the path alias, send it to Twig.

/**
 * Implements template_preprocess_field__FIELD_NAME().
 */
function MYTHEME_preprocess_field__MYFIELD(&$variables) {

  if ($variables['element']['#entity_type'] === 'node') {
    $node = $variables['element']['#object'];
    $nid = $node->id();
    $variables['myurl'] = \Drupal::service('path.alias_manager')->getAliasByPath('/node/' . $nid);
  }
}

In field.html.twig then do:

{% if myurl %}
   <a href="{{ myurl }}">Kool Keith</a>
{% endif %}
  • Is there any disadvantage (e.g. security) including the URL via element['#object'] without preprocessing (like suggested in the answers above)? – Benjamin Jul 17 at 13:25
  • @Benjamin – That's what I asked under @4k4's answer. I guess fields can be shared across entities (but not sure about that), then an additional check for node would be nice. But from a security point of view there's no difference. – leymannx Jul 17 at 13:29
1

Without preprocessing, directly in Twig:

{# get owner entity #}
{% set owner_entity = element['#object'] %}
{# render id #}
id = {{ element['#object'].id }}
{# render raw field value #}
field foo = {{ element['#object'].field_foo.0.value }}

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