app/soc/logic/model.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Mon, 22 Sep 2008 13:42:53 +0000
changeset 184 7c0b42aecd9b
parent 141 e120c24b89e2
child 254 e88beba437a3
permissions -rw-r--r--
Add support for changing User id (Google Account email) in User Profile Developer view. Now user profile developer edit view includes hidden key_name field. Fix typo in user/profile.py. Show former user ids in lookup and edit User Profile Developer views. Patch by: Pawel Solyga Reviewed by: to-be-reviewed
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#!/usr/bin/python2.5
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#
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# Copyright 2008 the Melange authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#   http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Helpers functions for updating different kinds of models in datastore.
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"""
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__authors__ = [
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  '"Pawel Solyga" <pawel.solyga@gmail.com>',
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  ]
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from google.appengine.ext import db
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def updateModelProperties(model, **model_properties):
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  """Update existing model entity using supplied model properties.
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  Args:
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    model: a model entity
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    **model_properties: keyword arguments that correspond to model entity
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      properties and their values
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  Returns:
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    the original model entity with any supplied properties changed 
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  """
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  def update():
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    return _unsafeUpdateModelProperties(model, **model_properties)
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  return db.run_in_transaction(update)
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def _unsafeUpdateModelProperties(model, **model_properties):
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  """(see updateModelProperties)
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  Like updateModelProperties(), but not run within a transaction. 
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  """
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  properties = model.properties()
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  for prop in properties.values():
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    if prop.name in model_properties:
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      value = model_properties[prop.name]
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      prop.__set__(model, value)
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  model.put()
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  return model