app/soc/logic/out_of_band.py
author Sverre Rabbelier <srabbelier@gmail.com>
Mon, 03 Nov 2008 19:47:02 +0000
changeset 439 0658c3c9a9dc
parent 303 4f1bb54ddae5
permissions -rw-r--r--
Minor fixes needed for generic key name We no longer try to retreive an entity when there are unset fields. This sort of makes 'getIfFields' obsolete, since we check if fields now anyway. This is needed because getKeyFieldsFromDict expects the fields to be set. Also a minor fix in a Django template so that the generic 'edit' page has a working delete button again.

#!/usr/bin/python2.5
#
# Copyright 2008 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.

"""Out-of-band responses to render instead of the usual HTTP response.
"""

__authors__ = [
  '"Todd Larsen" <tlarsen@google.com>',
  ]


class OutOfBandResponse(Exception):
  """Base exception for out-of-band responses raised by controller logic.
  """

  pass


class ErrorResponse(OutOfBandResponse):
  """Out-of-band response when controller logic needs a special error page.
  """

  def __init__(self, message, **response_args):
    """Constructor used to set error message and HTTP response arguments.
  
    Args:
      message: error message to display on the error page
      **response_args: keyword arguments that are supplied directly to
        django.http.HttpResponse; the most commonly used is 'status' to
        set the HTTP status code for the response
    """

    self.message = message
    self.response_args = response_args