Add function for getting events for a talk

GH-160

app/src/Talk/TwigExtension/TalksExtension.php

@@ -33,6 +33,7 @@ class TalksExtension extends AbstractExtension
             new TwigFunction('get_upcoming_talks', [$this, 'getUpcomingTalks']),
             new TwigFunction('get_past_talks', [$this, 'getPastTalks']),
             new TwigFunction('get_past_talk_count', [$this, 'getPastTalkCount']),
+            new TwigFunction('get_events_for_talk', [$this, 'getEventsForTalk']),
         ];
     }
 
@@ -89,6 +90,18 @@ class TalksExtension extends AbstractExtension
         return $this->getPastEvents($talks)->count();
     }
 
+    public function getEventsForTalk(array $talk, array $eventData): Collection
+    {
+        return (new Collection($talk['events']))
+            ->map(function (array $event) use ($eventData): Collection {
+                return (new Collection($event))->merge($eventData[$event['event']]);
+            })
+            ->filter(function (Collection $event): bool {
+                return !empty($event->get('date'));
+            })
+            ->sortBy('date');
+    }
+
     private function getLastDate($talk): string
     {
         return $this->eventsFromTalks(new Collection([$talk]))

app/tests/Talk/TwigExtension/RetrievingEventsTest.php

@@ -83,4 +83,71 @@ class RetrievingEventsTest extends TestCase
         $this->assertCount(1, $pastEvents);
         $this->assertSame('php_south_wales', $pastEvents[0]['event']);
     }
+
+    /** @test */
+    public function get_all_of_the_events_for_a_talk()
+    {
+        $talk = [
+            'title' => 'TDD - Test Driven Drupal',
+            'events' => [
+                [
+                    'event' => 'drupal_developer_days_2018',
+                    'date' => (new DateTime('-1 day'))->getTimestamp(),
+                ],
+                [
+                    'event' => 'drupalcamp_london_2019',
+                    'date' => (new DateTime('+1 day'))->getTimestamp(),
+                ],
+            ],
+        ];
+
+        $eventData = [
+            'drupal_developer_days_2018' => [
+                'name' => 'Drupal Developer Days, Lisbon 2018',
+            ],
+            'drupalcamp_london_2019' => [
+                'name' => 'DrupalCamp London 2019',
+            ],
+        ];
+
+        $events = $this->extension->getEventsForTalk($talk, $eventData);
+
+        $this->assertCount(2, $events);
+        $this->assertSame(
+            ['drupal_developer_days_2018', 'drupalcamp_london_2019'],
+            $events->pluck('event')->toArray()
+        );
+    }
+
+    /** @test */
+    public function events_with_no_date_are_not_returned_for_an_event()
+    {
+        $talk = [
+            'title' => 'TDD - Test Driven Drupal',
+            'events' => [
+                [
+                    'event' => 'drupal_developer_days_2018',
+                    'date' => (new DateTime('-2 days'))->getTimestamp(),
+                ],
+                [
+                    'event' => 'drupalcamp_london_2019',
+                    'date' => '',
+                ],
+            ],
+        ];
+
+        $eventData = [
+            'drupal_developer_days_2018' => [
+                'name' => 'Drupal Developer Days, Lisbon 2018',
+            ],
+            'drupalcamp_london_2019' => [
+                'name' => 'DrupalCamp London 2019',
+            ],
+        ];
+
+        $events = $this->extension->getEventsForTalk($talk, $eventData);
+
+        $this->assertCount(1, $events);
+        $this->assertSame('drupal_developer_days_2018', $events->pluck('event')->first());
+    }
 }

source/_layouts/talk.html.twig

@@ -17,6 +17,6 @@
         {% include 'talk/slides' %}
         {% include 'talk/video' %}
         {% include 'talk/tweets' %}
-        {% include 'talk/events' %}
+        {% include 'talk/events' with { events: get_events_for_talk(page, site.events) } only %}
     </div>
 {% endblock %}

source/_partials/talk/events.html.twig

@@ -1,13 +1,14 @@
 {% import 'helpers' as helpers %}
 
-{% if page.events %}
+{% if events %}
     <div>
-        <h2 class="mb-2">Presented at</h2>
+        <h2>Presented at</h2>
 
-        <ul class="markup list-disc ml-5">
-            {% for event in page.events if not event.date is empty %}
+        <ul class="markup mt-2 list-disc ml-5">
+            {% for event in events %}
                 <li>
                     {{ helpers.talkEventName(event) }}
+                    {{ helpers.talkEventLocation(event) }}
                     <span class="text-gray-800">- {{ event.date|date('jS F Y') }}</span>
                 </li>
             {% endfor %}