def add_userpage(user_id, page_id, value, user_page_id=None):
user_page = UserPage()
if user_page_id is not None:
user_page.user_page_id = user_page_id
user_page.created_time = datetime.datetime.now()
user_page.updated_time = datetime.datetime.now()
else:
user_page.updated_time = datetime.datetime.now()
user_page.user_id = user_id
user_page.page_id = page_id
user_page.value = value
user_page.persist()
