Add logging for updating a talk before saving

web/modules/custom/talks/opdavies_talks.services.yml

@@ -2,23 +2,18 @@ services:
   Drupal\Core\Cache\CacheBackendInterface:
     alias: cache.default
     private: true
-
   Drupal\opdavies_talks\Repository\TalkRepository:
     autowire: true
-
   Drupal\opdavies_talks\Service\CachedTalkCounter:
     autowire: true
-
   Drupal\opdavies_talks\Service\TalkCounter:
     autowire: true
-
   Drupal\opdavies_talks\Service\TalkCounterInterface:
     autowire: true
     class: Drupal\opdavies_talks\Service\CachedTalkCounter
-
   Drupal\opdavies_talks\Service\TalkDateUpdater:
     autowire: true
-
   Drupal\opdavies_talks\EventSubscriber\UpdateTalkNodeBeforeSave:
+    autowire: true
     tags:
-      - { name: event_subscriber }
+      - {name: event_subscriber}

web/modules/custom/talks/src/EventSubscriber/UpdateTalkNodeBeforeSave.php

@@ -4,12 +4,13 @@ declare(strict_types=1);
 
 namespace Drupal\opdavies_talks\EventSubscriber;
 
-use Carbon\Carbon;
+use Drupal\Core\Logger\LoggerChannelFactoryInterface;
 use Drupal\core_event_dispatcher\EntityHookEvents;
 use Drupal\core_event_dispatcher\Event\Entity\AbstractEntityEvent;
 use Drupal\opdavies_talks\Entity\Node\Talk;
 use Drupal\paragraphs\ParagraphInterface;
 use Illuminate\Support\Collection;
+use Psr\Log\LoggerInterface;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 /**
@@ -17,6 +18,12 @@ use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  */
 final class UpdateTalkNodeBeforeSave implements EventSubscriberInterface {
 
+  private LoggerInterface $logger;
+
+  public function __construct(LoggerChannelFactoryInterface $logger) {
+    $this->logger = $logger->get('opdavies_talks');
+  }
+
   public static function getSubscribedEvents() {
     return [
       EntityHookEvents::ENTITY_PRE_SAVE => 'onEntityPreSave',
@@ -45,6 +52,8 @@ final class UpdateTalkNodeBeforeSave implements EventSubscriberInterface {
       return;
     };
 
+    $this->logger->debug(sprintf('Sorting events for talk "%s"', $talk->label()));
+
     $eventsByDate = $this->sortEventsByDate($events);
 
     // If the original event IDs don't match the sorted event IDs, update the event field to use the sorted ones.
@@ -61,6 +70,8 @@ final class UpdateTalkNodeBeforeSave implements EventSubscriberInterface {
   }
 
   private function updateMostRecentEventDate(Talk $talk): void {
+    $this->logger->debug(sprintf('Updating the most recent event date for talk "%s"', $talk->label()));
+
     $mostRecentEventDate = $talk->findLatestEventDate();
 
     $talk->set('field_event_date', $mostRecentEventDate);