Ensure a talk has a title

src/TwigExtension/TalkExtension.php

@@ -7,6 +7,7 @@ namespace App\TwigExtension;
 use Illuminate\Support\Collection;
 use Twig\Extension\AbstractExtension;
 use Twig\TwigFunction;
+use Webmozart\Assert\Assert;
 
 final class TalkExtension extends AbstractExtension
 {
@@ -27,6 +28,16 @@ final class TalkExtension extends AbstractExtension
         $talkCollection = new Collection($talks);
 
         return $talkCollection
-            ->flatMap(fn($talk): array => (array) $talk['events']);
+            ->map(fn($talk): array => (array) $talk['events'])
+            ->filter(function (array $event): bool {
+                try {
+                    Assert::keyExists($event, 'title');
+
+                    return true;
+                }
+                catch (\RuntimeException $e) {
+                    return false;
+                }
+            });
     }
 }

tests/TalkExtensionTest.php

@@ -27,7 +27,7 @@ final class TalkExtensionTest extends TestCase
             [
                 'title' => 'Building static sites with Sculpin',
                 'events' => [
-                    '',
+                    'title' => 'Building static websites with Sculpin',
                 ]
             ],
         ];