Events (Comments Work)

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Customize with events

You can customize comments work with events.

An example would be to disallow posting on content that was created more than a year ago.

Or you could add a lightswitch field to your content items so editors can specify wether commenting is allowed.

The `Can Post` event

With this event you can programmatically determine wether a user (or anonymous user) can post on a specific element.

Here's a complete example how to integrate the event in Craft's default module that ships with a fresh install.

Twig: show a message if a user is not allowed to post

_entry.twig:

{% set commentsWork = craft.commentsWork.service %}
{% set canComment = commentsWork.canComment(entry, currentUser) %}
{% if not canComment.allowed %}
	<p>{{ canComment.message }}</p>
{% else %}
    // show the comment form
{% endif %}

Module: disallow commenting on posts older than one month

modules/module.php:

// don't forget to bootstrap the module in config/app.php !!

namespace modules;

use Craft;
use craft\elements\Entry;
use twentyfourhoursmedia\commentswork\events\AllowedEvent;
use twentyfourhoursmedia\commentswork\services\CommentsWorkService;
use yii\base\Event;

class Module extends \yii\base\Module
{

    public function init()
    {
        // Set a @modules alias pointed to the modules/ directory
        Craft::setAlias('@modules', __DIR__);

        // Set the controllerNamespace based on whether this is a console or web request
        if (Craft::$app->getRequest()->getIsConsoleRequest()) {
            $this->controllerNamespace = 'modules\\console\\controllers';
        } else {
            $this->controllerNamespace = 'modules\\controllers';
        }
        parent::init();
        
        // Check if a user can comment on an element
        Event::on(CommentsWorkService::class, CommentsWorkService::EVENT_CAN_COMMENT, function(AllowedEvent $event) {
            // $event->user contains the user that wants to comment, or null for an anonymous user
            // $event->element contains the element to post comments on

            // example: disallow posting on elements that are posted more than one month ago
            // prevent other listeners from setting 'handled' to another value
            if ($event->element instanceof Entry && $event->element->postDate->getTimestamp() < strtotime('-1 month')) {
                $event->allowed = false;
                $event->message = 'You cannot post comments on old content.';
                $event->handled = true;
            }
        });
        
    }
}