How do i display format_interval?

Question

In Drupal 8 I am using

$date_service = \Drupal::service('date');
$options = drupal_map_assoc(array(900, 1800, 3600, 7200, 10800, 21600, 32400, 43200,
  64800, 86400, 172800, 259200, 604800, 1209600, 2419200), array($date_service, 'formatInterval'));

But this gives me error

Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: You have requested a non-existent service "date". Did you mean one of these: "theme.negotiator.system.db_update", "entity.definition_update_manager", "date.formatter", "update.post_update_registry", "update.post_update_registry_factory", "access_check.db_update", "access_check.update.manager_access", "update.manager", "update.processor", "update.fetcher", "update.root"? in Drupal\Component\DependencyInjection\Container->get() (line 161 of /Applications/MAMP/htdocs/drupal-8.0.x-dev/core/lib/Drupal/Component/DependencyInjection/Container.php).

What wrong am i doing? Am i missing use class something like this use Drupal.... or something wrong in line $date_service = \Drupal::service('date');

Answer 1

My piece of working code:

$time_intervals = array(30, 3600, 10800, 21600, 43200, 86400, 172800, 259200, 604800, 1209600, 2592000, 5184000, 7776000);

$options = $this->build_options($time_intervals);

Also i have defined following function in the same class:

function build_options(array $time_intervals, $granularity = 2, $langcode = NULL) {
  $callback = function ($value) use ($granularity, $langcode) {
    return \Drupal::service('date.formatter')->formatInterval($value, $granularity, $langcode);
  };

  return array_combine($time_intervals, array_map($callback, $time_intervals));
}

Answer 2

There is no default service for date in drupal 8, but it has service for date formatter, you could do that simply with following code,

\Drupal::service('date.formatter')->format($date, 'date_text');

For more formatting check the article

Answer 3

The code contains two errors, since Drupal 8

• doesn't have any date service
• doesn't define any drupal_map_assoc() function

The equivalent of Drupal 7 format_interval($interval, $granularity = 2, $langcode = NULL) is \Drupal::service('date.formatter')->formatInterval($interval, $granularity = 2, $langcode = NULL), which also works on Drupal 8.0.x.

If you need to write code that given an array like [30, 60] returns an array like [30 => '30 seconds ago', 60 => '1 minute ago'], this is the code I would use.

$time_intervals = [30, 3600, 10800, 21600, 43200, 86400, 172800, 259200, 604800, 1209600, 2592000, 5184000, 7776000];

$options = build_options($time_intervals);

function build_options(array $time_intervals, $granularity = 2, $langcode = NULL) {
  $callback = function ($value) use ($granularity, $langcode) {
    return \Drupal::service('date.formatter')->formatInterval($value, $granularity, $langcode);
  };

  return array_combine($time_intervals, array_map($callback, $time_intervals));
}

Answer 4

For those who got here by searching how to use formatInterval to override a field value here is how it could be done:

$interval = time() - strtotime('time string loaded from entity');
$interval = \Drupal::service('date.formatter')->formatInterval($interval, 2);
$output = t('Was found @interval ago', array('@interval' => $interval));

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