$output[] = array(
'#type' => 'inline_template',
'#template' => '{{ yourvar }}',
'#context' => array(
'yourvar' => 'The Value',
),
);
Example 1, with FieldPluginBase (\Drupal\views\Plugin\views\field\FieldPluginBase)
Step 1. Create your module and Block (/tutoriels/107/create-a-simple-block-programmatically)
Step 2. Add your template usin hook_theme() (here module name = clock)
You enable Twig Debugging in sites/default/services.yml.
(If services.yml does not yet exist; copy default.services.yml and rename it to services.yml.)
parameters:
twig.config:
debug: true
Printing variables
Print : {{ variable_to_print }}
Code : {% codes %}
Comment : {# Comments #}
https://www.drupal.org/theme-guide/8/twig
https://www.drupal.org/theme-guide/8