blob: 589e05da0e7d4150ab662a4f19b05e482db20e68 [file] [log] [blame]
# Copyright 2013 the Melange authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Logic for settings."""
from google.appengine.ext import ndb
from melange.models import settings as settings_model
def setUserSettings(user_key, **kwargs):
"""Sets settings for the specified user.
This function, if run within a transaction, guarantees that there is at most
one settings_model.UserSettings entity per user.
Args:
user_key: User key.
kwargs: Initial values for the instance's properties, as keyword arguments.
Returns:
settings_model.UserSettings entity for the specified user.
"""
user_settings = ndb.Query(
kind=settings_model.UserSettings._get_kind(),
ancestor=ndb.Key.from_old_key(user_key)).get()
if not user_settings:
user_settings = settings_model.UserSettings(
parent=ndb.Key.from_old_key(user_key), **kwargs)
else:
user_settings.populate(**kwargs)
user_settings.put()
return user_settings
def getUserSettings(user_key):
"""Returns settings for the specified user.
If no settings_model.UserSettings entity exists for the user, a new one
is created.
Args:
user_key: User key.
Returns:
settings_model.UserSettings entity for the specified user.
"""
user_settings = ndb.Query(
kind=settings_model.UserSettings._get_kind(),
ancestor=ndb.Key.from_old_key(user_key)).get()
if user_settings:
return user_settings
else:
return ndb.transaction(lambda: setUserSettings(user_key))