def _capture_game_snapshot(game, char):
# game history is per game, so parent should be game and not the user
# game history id
history_id = GameHistory.allocate_ids(size=1, parent=game.key)[0]
# game history key generated using history_id and game as its ancestor
history_key = ndb.Key(GameHistory, history_id, parent=game.key)
game_history = GameHistory(key=history_key,
step_char=char,
game_snapshot=game)
# save game history
game_history.put()
