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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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−
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−"""This module contains the Proposal Model."""
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−
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−__authors__ = [
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−  '"Todd Larsen" <tlarsen@google.com>',
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−  '"Pawel Solyga" <pawel.solyga@gmail.com>',
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−]
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−
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−
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−from google.appengine.ext import db
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−
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−from django.utils.translation import ugettext
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−
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−import soc.models.work
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−import soc.models.quiz
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−import soc.models.response
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−
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−
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−class Proposal(soc.models.work.Work):
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−  """Model of a Proposal, which is a specific form of a Work.
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−
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−  The specific way that the properties and relations inherited from Work
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−  are used with a Proposal are described below.
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−
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−    work.title:  the title of the Proposal
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−
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−    work.reviews:  reviews of the Proposal by Reviewers
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−
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−    work.content:  the details of the Proposal; which, unlike work.abstract
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−      is considered "public" information, the contents of a Proposal are only
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−      displayed to Persons in Roles that have a "need to know" those details.
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−
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−  A Proposal entity participates in the following relationships implemented 
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−  as a db.ReferenceProperty elsewhere in another db.Model:
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−
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−  tasks)  an optional 1:many relationship of Task entities using the
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−    Proposal as their foundation.  This relation is implemented as the
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−    'tasks' back-reference Query of the Task model 'proposal' reference.
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−  """
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−  #: optional, indexed plain text field used for different purposes,
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−  #: depending on the specific type of the work
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−  abstract = db.StringProperty(multiline=True)
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−  abstract.help_text = ugettext(
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−      'short abstract, summary, or snippet;'
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−      ' 500 characters or less, plain text displayed publicly')
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−
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−  #: an optional many:1 relationship between Proposal and a Quiz that
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−  #: defines what Questions were added by the prospective Proposal Reviewer
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−  #: for the Proposal author to answer.
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−  quiz = db.ReferenceProperty(reference_class=soc.models.quiz.Quiz,
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−                              required=False, collection_name="proposals")
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−
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−  #: an optional 1:1 relationship where a Proposal author's Answers to
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−  #: a Quiz attached to the Proposal template by the Proposal Reviewer
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−  #; are collected. 
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−  response = db.ReferenceProperty(
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−      reference_class=soc.models.response.Response, required=False,
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−      collection_name="proposal")