blob: 364eb91d22bba66d6d27190e143197e6b95745db [file] [log] [blame]
# Copyright 2012 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.
"""Module for the program settings pages."""
from google.appengine.ext import db
class ProgramMessagesPage(object):
"""View for the content of program specific messages to be sent."""
def checkAccess(self):
self.check.isHost()
def context(self):
entity = self._getSingletonEntity(self.data.program)
form = self._getForm(entity)
return {
'page_name': 'Edit program messages',
'forms': [form],
'error': form.errors,
}
def post(self):
"""Handler for HTTP POST request."""
cbox = bool(self.data.GET.get('cbox'))
if self.validate():
self.redirect.program()
self.redirect.to(self._getUrlName(), validated=True, cbox=cbox)
else:
self.get()
def validate(self):
entity = self._getSingletonEntity(self.data.program)
form = self._getForm(entity)
if form.is_valid():
form.save()
return True
else:
return False
def _getSingletonEntity(self, program):
model = self._getModel()
def get_or_create_txn():
entity = model.all().ancestor(program).get()
if not entity:
entity = model(parent=program)
entity.put()
return entity
return db.run_in_transaction(get_or_create_txn)
def _getForm(self, entity):
raise NotImplementedError
def _getModel(self):
raise NotImplementedError
def _getUrlName(self):
raise NotImplementedError