How can I check if a module is enabled?

Question

In Drupal 7, you can use module_exists() to check whether a module is enabled (as well as whether it exists).

For example,

if (module_exists('devel')) {

How can you check whether a module is enabled in Drupal 8?

itsdarrylnorris · Accepted Answer · 2018-05-28 18:29:36Z

33

Just like Clive mention....

service would be preferable to using \Drupal (assuming it's an option in current context)

Here is an example of checking if a module is enable but using a service.

$moduleHandler = \Drupal::service('module_handler');
  if ($moduleHandler->moduleExists('devel')){
     // Code Here
  }

answered Oct 9 '16 at 9:05

itsdarrylnorris

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\Drupal::moduleHandler ends up just making an equivalent call to get the "module_handler" service anyway (see the moduleHandler doco). The key word in Clives comment was injecting, i.e. passing the service to a constructor. – George Apr 12 '18 at 1:10

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Patrick Kenny · Accepted Answer · 2016-01-28 09:09:40Z

12

Like this:

  if (\Drupal::moduleHandler()->moduleExists('devel')) {

answered Jan 28 '16 at 9:09

Patrick Kenny

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It's worth nothing that injecting the module_handler service would be preferable to using \Drupal (assuming it's an option in current context) – Clive♦ Jan 28 '16 at 9:15
@Clive why is that preferable? – ryrye Jan 8 at 19:13

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2 Answers 2