diff --git a/Resources/views/widget/heatmap.html.twig b/Resources/views/widget/heatmap.html.twig
index 65c11a9..1a5ea2c 100644
--- a/Resources/views/widget/heatmap.html.twig
+++ b/Resources/views/widget/heatmap.html.twig
@@ -6,6 +6,8 @@
         <link rel="stylesheet" href="{{ asset('bundles/kimaiheatmap/heatmap.css') }}">
         <div id="heatmap-container"
              data-url="{{ path('heatmap_data') }}"
+             data-projects="{{ data.projects|json_encode }}"
+             data-timesheet-url="{{ path('timesheet') }}"
              style="min-height: 150px; overflow-x: auto;">
         </div>
         <script src="{{ asset('bundles/kimaiheatmap/heatmap.js') }}"></script>
diff --git a/Service/HeatmapService.php b/Service/HeatmapService.php
index d70f707..fc5ba48 100644
--- a/Service/HeatmapService.php
+++ b/Service/HeatmapService.php
@@ -47,4 +47,23 @@ class HeatmapService
             ];
         }, $results);
     }
+
+    /**
+     * @return array<int, array{id: int, name: string}>
+     */
+    public function getUserProjects(User $user): array
+    {
+        $qb = $this->repository->createQueryBuilder('t');
+        $qb->select('DISTINCT IDENTITY(t.project) as projectId, p.name')
+           ->join('t.project', 'p')
+           ->andWhere($qb->expr()->eq('t.user', ':user'))
+           ->andWhere($qb->expr()->isNotNull('t.end'))
+           ->setParameter('user', $user)
+           ->orderBy('p.name', 'ASC');
+
+        return array_map(fn(array $row) => [
+            'id' => (int) $row['projectId'],
+            'name' => $row['name'],
+        ], $qb->getQuery()->getResult());
+    }
 }
diff --git a/Widget/HeatmapWidget.php b/Widget/HeatmapWidget.php
index a38e7f1..c9bcd6c 100644
--- a/Widget/HeatmapWidget.php
+++ b/Widget/HeatmapWidget.php
@@ -4,9 +4,14 @@ namespace KimaiPlugin\KimaiHeatmapBundle\Widget;
 
 use App\Widget\Type\AbstractWidget;
 use App\Widget\WidgetInterface;
+use KimaiPlugin\KimaiHeatmapBundle\Service\HeatmapService;
 
-final class HeatmapWidget extends AbstractWidget
+class HeatmapWidget extends AbstractWidget
 {
+    public function __construct(private readonly HeatmapService $service)
+    {
+    }
+
     public function getId(): string
     {
         return 'HeatmapWidget';
@@ -34,7 +39,11 @@ final class HeatmapWidget extends AbstractWidget
 
     public function getData(array $options = []): mixed
     {
-        return null;
+        $user = $this->getUser();
+
+        return [
+            'projects' => $this->service->getUserProjects($user),
+        ];
     }
 
     public function getTemplateName(): string