Get events for talks

src/Talks/src/TwigExtension/TalksExtension.php

@@ -5,6 +5,8 @@ namespace App\Talks\TwigExtension;
 use Illuminate\Support\Collection;
 use Sculpin\Contrib\ProxySourceCollection\ProxySourceCollection;
 use Twig_Extension;
+use Tightenco\Collect\Support\Collection;
+use Twig\TwigFilter;
 use Twig_SimpleFunction;
 
 class TalksExtension extends Twig_Extension
@@ -34,6 +36,13 @@ class TalksExtension extends Twig_Extension
         ];
     }
 
+    public function getFilters()
+    {
+        return [
+            new TwigFilter('events', [$this, 'getEvents']),
+        ];
+    }
+
     /**
      * Get all upcoming and previous talks.
      *
@@ -88,4 +97,11 @@ class TalksExtension extends Twig_Extension
     {
         return (string) collect($talk['events'])->pluck('date')->sort()->last();
     }
+
+    public function getEvents(Collection $talks): Collection
+    {
+        return $talks->flatMap(function ($talk): array {
+            return $talk['events'];
+        });
+    }
 }

src/Talks/tests/TwigExtension/TalksExtensionTest.php

@@ -141,4 +141,26 @@ class TalksExtensionTest extends TestCase
         $this->assertCount(1, $this->extension->getUpcoming([$talk]));
         $this->assertEmpty($this->extension->getPast([$talk]));
     }
+
+    /** @test */
+    public function get_events_from_talks()
+    {
+        $talkA = [
+            'title' => 'Talk A',
+            'events' => [
+                ['event' => 'event_a', 'date' => (new DateTime('-1 days'))->getTimestamp()],
+                ['event' => 'event_b', 'date' => (new DateTime('+1 days'))->getTimestamp()],
+            ],
+        ];
+
+        $talkB = [
+            'title' => 'Talk B',
+            'events' => [
+                ['event' => 'event_a', 'date' => (new DateTime('-3 days'))->getTimestamp()],
+            ],
+        ];
+
+        $talks = collect([$talkA, $talkB]);
+        $this->assertCount(3, $this->extension->getEvents($talks));
+    }
 }