Activity instances are created for special events in the context of a humhub\modules\content\models\ContentContainer like the creation of new content.

Contrary to notifications - activities are always bound to a humhub\modules\content\models\ContentContainer, so they are not especially linked against a user or a given set of them. Besides the link to the humhub\modules\content\models\ContentContainer - an activity can also be assigned with a Content or ContentAddon and automatically inherits some content attributes such as visiblity.

Implement a Custom Activity

Create Class & View

Create a folder activities in your module and a new class SomethingHappend


namespace johndoe\example\activities;

use humhub\core\activity\components\BaseActivity;

class SomethingHappend extends BaseActivity
    // View Name for activity
    public $viewName = "somethingHappend";

    // Module Id (required)
    public $moduleId = "example";

By default activity views should be located inside a subfolder named views where your activity class is located (e.g. /modules/examples/activities/views/).

Example view file somethingHappend.php :


use yii\helpers\Html;

echo Yii::t('ExampleModule.views_notifications_newLike', "%someUser% did something cool.", array(
    '%someUser%' => '<strong>' . Html::encode($originator->displayName) . '</strong>'

If you require a different view for mails, you have to create a mail folder in your views directory.

Save an Activity

$activity = new \johndoe\example\activities\NewLike();

// Link to a ContentContainer, Content or ContentAddon 
$activity->source = $this;

// User which trigged this Activity - in case of Content/ContentAddon the Creator will be automatically set.
$activity->originator = $user;