3

I am trying to get the view mode of a node to use it in a field twig file by writing this function in my_theme, but it doesn't work:

function MY_THEME_preprocess_field(&$variables, $hook) {
 if ($node = \Drupal::routeMatch()->getParameter('node')) {
  $variables['view_mode_2'] = $node->view_mode;
 }
}

I don't know if the variable is correct, but when I write some echo code I see that already the if condition isn't fulfilled.

EDIT: the if condition is only fulfilled when the node is open, but not when its teaser is shown as part of a view on the front page.

8

In a field template the view mode is stored here:

$variables['element']['#view_mode']

So you could check in preprocess, if the node is not displayed as teaser:

function MY_THEME_preprocess_field(&$variables) {
  if ($variables['element']['#view_mode'] != 'teaser')  {
    // node is not displayed on the front page
  }
}

The same condition in a field twig:

field.html.twig

{% if element['#view_mode'] != 'teaser' %}
  node is not displayed on the front page
{% endif %}
  • Ah, thank you, that's what I was searching! If anybody wants to know why this could be useful: My content type article has a text field for a subheadline. In order to wrap this headline with h-tags I created a custom field-xxx.html.twig file, but the problem is that the subheadline needs h3 tags in a teaser context, but h2 tags when showed as a full page. So the twig template is now checking the view mode and giving h2 or h3 tags depending on the view mode. – 0711master Jan 2 '17 at 0:20
  • You can use the same condition in a field twig. I add this to the answer. – 4k4 Jan 2 '17 at 7:19
  • So you don't need the preprocess anymore? – 0711master Jan 2 '17 at 14:11
  • Yes, you've asked about preprocess, but for what you've described in the comment you don't need preprocess. – 4k4 Jan 2 '17 at 14:18
  • Cool, good to know! – 0711master Jan 2 '17 at 14:46

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