[QUESTION]: PollAnswerHandler in ConversationHandler with per_chat = True #2338
Description
Issue I am facing
The callback for a PollAnswerHandler that in integration within a ConversationHandler is never executed. Thus, it is impossible to check poll results within an active Conversation and make changes to the conversation state based in the poll results.
Traceback to the issue
The sourcecode for the check_update function in the ConversationHandler (link) revealed the following:
if self.per_chat and not update.effective_chat:
return None
An update for a poll answer looks like this
telegram.ext.dispatcher - DEBUG - Processing Update: {'update_id': 77252507, 'poll_answer': {'poll_id': '5224265113522929685', 'user': {'id': 1297725373, 'first_name': 'All3', 'is_bot': False, 'last_name': 'Uos', 'username': 'alluos3', 'language_code': 'de'}, 'option_ids': [0]}}
As you can see, this update contains no effective_chat and therefore the PollAnswerHandler can not be used within a ConversationHandler. This seems very counterintuitive as the ConversationHandler kind of promises to work with every other type of handler.
Related part of your code
room_manager_conv_handler = ConversationHandler(
entry_points=[
CommandHandler('start', room.start_escape, filters=Filters.chat_type.groups)
],
states={
state.WAIT_FOR_USERS_TO_BE_READY: [
MessageHandler(filter_ready, room.evaluate_readiness),
],
state.WAIT_FOR_PATH_SEL: [
MessageHandler(filter_paths, room.save_path)
],
state.WAIT_FOR_TASK_SELECTION: [
sentence_corr_conv_handler,
vocab_desc_conv_handler,
discussion_conv_handler
],
state.WAIT_FOR_PASSCODE: [
MessageHandler(None, room.check_passcode)
],
state.WAIT_FOR_RESTART_POLL: [
PollAnswerHandler(room.handle_poll_updates),
]
},
fallbacks=[
CommandHandler('stop', room.stop_group, filters=Filters.chat_type.groups)
],
per_user=False
)