API: Add "currently inside" to checkin statistics

src/pretix/api/views/checkin.py

@@ -111,7 +111,8 @@ class CheckinListViewSet(viewsets.ModelViewSet):
                     'name': str(ev.name),
                 },
                 'checkin_count': cqs.count(),
-                'position_count': pqs.count()
+                'position_count': pqs.count(),
+                'inside_count': clist.inside_count,
             }
 
             op_by_item = {

src/tests/api/test_checkin.py

@@ -565,6 +565,7 @@ def test_status(token_client, organizer, event, clist_all, item, other_item, ord
     assert resp.status_code == 200
     assert resp.data['checkin_count'] == 1
     assert resp.data['position_count'] == 2
+    assert resp.data['inside_count'] == 1
     assert resp.data['items'] == [
         {
             'name': str(item.name),