api: fix event meta for ocurrences (#53209)

chrono/api/views.py

@@ -390,15 +390,16 @@ def is_event_disabled(event, min_places=1):
 
 def get_event_detail(request, event, agenda=None, min_places=1):
     agenda = agenda or event.agenda
+    event_text = force_text(event)
     if event.label and event.primary_event is not None:
-        event.label = '%s (%s)' % (
+        event_text = '%s (%s)' % (
             event.label,
             date_format(localtime(event.start_datetime), 'DATETIME_FORMAT'),
         )
     return {
         'id': event.slug,
         'slug': event.slug,  # kept for compatibility
-        'text': force_text(event),
+        'text': event_text,
         'datetime': format_response_datetime(event.start_datetime),
         'description': event.description,
         'pricing': event.pricing,

tests/test_api.py

@@ -5936,6 +5936,14 @@ def test_datetimes_api_meta(app, freezer):
         'first_bookable_slot': None,
     }
 
+    # recurring event
+    Event.objects.all().delete()
+    Event.objects.create(
+        slug='abc', label='Test', start_datetime=localtime(), repeat='weekly', places=5, agenda=agenda
+    )
+    resp = app.get(api_url)
+    assert resp.json['meta']['first_bookable_slot']['text'] == 'Test (May 27, 2017, 1:12 a.m.)'
+
 
 def test_datetimes_api_meetings_agenda_meta(app, freezer):
     # 2017-05-20 -> saturday