Edit SurveyRecord model to not make use of different Survey property for each subclass.
This does mean that a simple query needs to be constructed by hand whenever you want to query for every SurveyRecord for a specific Survey. However the naming is now the same over each SurveyRecord and it fits well into the rest of the design of Melange.
#!/usr/bin/python2.5
#
# Copyright 2009 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.
"""SurveyRecord represents a single Survey result.
"""
__authors__ = [
'"Daniel Diniz" <ajaksu@gmail.com>',
'"James Levy" <jamesalexanderlevy@gmail.com>',
'"Lennard de Rijk" <ljvderijk@gmail.com>',
]
from google.appengine.ext import db
from django.utils.translation import ugettext
from soc.models.survey import Survey
import soc.models.user
class BaseSurveyRecord(db.Expando):
"""Record produced each time Survey is taken.
Like SurveyContent, this model includes dynamic properties
corresponding to the fields of the survey.
"""
#: The survey for which this entity is a record.
survey = db.ReferenceProperty(Survey,
collection_name="survey_records")
#: Date when this record was created.
created = db.DateTimeProperty(auto_now_add=True)
#: Date when this record was last modified.
modified = db.DateTimeProperty(auto_now=True)
def getValues(self):
"""Method to get dynamic property values for a survey record.
Right now it gets all dynamic values, but it could also be confined to
the SurveyContent entity linked to the survey entity.
"""
survey_order = self.survey.survey_content.getSurveyOrder()
values = []
for position, property in survey_order.items():
values.insert(position, getattr(self, property, None))
return values
class SurveyRecord(BaseSurveyRecord):
#: Reference to the User entity which took this survey.
user = db.ReferenceProperty(reference_class=soc.models.user.User,
required=True, collection_name="surveys_taken",
verbose_name=ugettext('Taken by'))