def add_issue(user_id, house_name, card_key_str, content):
pigeon_key = ndb.Key(Pigeon, user_id)
house_list = House.query(House.name == house_name).fetch()
house_key = house_list[0].key
card_key = ndb.Key(Card, card_key_str, parent=house_key)
issue = Issue(pigeon_key=pigeon_key,
house_key=house_key,
card_key=card_key,
comment=content,
date_str='')
issue.put()
date2str = str(issue.date)
str_list = date2str.split('.')
issue.date_str = str_list[0]
issue.put()
return
