Merge pull request pycontw#1149 from pycontw/update/ccip/session-time…

…zone

feat(ccip): let session start/end time follow local timezone

src/ccip/views.py

@@ -1,4 +1,5 @@
 import operator
+from datetime import timezone, timedelta
 
 from django.http import JsonResponse
 from django.templatetags.static import static
@@ -166,11 +167,15 @@ def _transform_session(request, event, type_key, info_getter):
  for speaker in event_info.speakers
  ]
 
+ LOCAL_TIMEZONE = timezone(offset=timedelta(hours=8))
+ # Explicitly show the local timezone used by OPass(CCIP)
+ # to avoid iOS device showing UTC+0 time without changing it to local time
+ # https://github.com/CCIP-App/CCIP-iOS/issues/54
  session = {
  'id': f'{type_key}-{event_info.pk}',
  'type': type_key,
- 'start': event.begin_time.value.isoformat() if event.begin_time else None,
- 'end': event.end_time.value.isoformat() if event.end_time else None,
+ 'start': event.begin_time.value.astimezone(LOCAL_TIMEZONE).isoformat() if event.begin_time else None,
+ 'end': event.end_time.value.astimezone(LOCAL_TIMEZONE).isoformat() if event.end_time else None,
  'slide': event_info.slide_link,
  'speakers': [speaker['id'] for speaker in speakers],
  'tags': [tag['id'] for tag in tags],