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# 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
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.
"""GSoCGradingRecord represents a cluster (mentor/student) of SurveyRecords
for an evaluation period.
from google.appengine.ext import db
from django.utils.translation import ugettext
from soc.modules.gsoc.models import grading_project_survey_record as grading_project_survey_record_model
from soc.modules.gsoc.models import grading_survey_group as grading_survey_group_model
from soc.modules.gsoc.models import project_survey_record as project_survey_record_model
class GSoCGradingRecord(db.Model):
"""Explicitly group SurveyRecords with a common project.
Because Mentors and Students take different surveys,
we cannot simply link survey records by a common project and survey.
Instead, we establish a GSoCGradingRecord.
A GradingRecord links a group of survey records with a common
project, and links back to its records.
This entity can be edited by Program Administrators to edit the outcome
of a the Grading surveys without touching the real survey's answers.
Also if a ProjectSurvey has been coupled to the GradingSurveyGroup this must
be on record as well for the GradingRecord to state a pass, even if the
Mentor has filled in a passing grade.
#: The GSoCGradingSurveyGroup to which this record belongs
grading_survey_group = db.ReferenceProperty(
required=True, reference_class=
#: Mentor's GSoCGradingProjectSurveyRecord for this evaluation. Iff exists.
mentor_record = db.ReferenceProperty(
required=False, reference_class=
#: Student's GSoCProjectSurveyRecord for this evaluation. Iff exists.
student_record = db.ReferenceProperty(
required=False, reference_class=
#: Grade decision set for this grading record.
#: pass: Iff the mentor_record states that the student has passed.
#: And if a ProjectSurvey has been set in the GradingSurveyGroup
#: then the student_record must be set as well.
#: fail: If the mentor_record states that the student has failed. The
#: student_record does not matter in this case. However if the mentor
#: states that the student has passed, a ProjectSurvey has been
#: set in the GradingSurveyGroup and the student_record property is not
#: set the decision will be fail.
#: undecided: If no mentor_record has been set.
grade_decision = db.StringProperty(
required=True, default='undecided',
choices=['pass', 'fail', 'undecided'],
#: Boolean that states if the grade_decision property has been locked
#: This is to prevent an automatic update from a GradingSurveyGroup to
#: overwrite the decision made by for example a Program Administrator.
locked = db.BooleanProperty(
required=False, default=False,
verbose_name=ugettext('Grade locked'))
locked.help_text = ugettext('When locked the grade can only be changed manually.')
#: Property containing the date that this GradingRecord was created.
created = db.DateTimeProperty(auto_now_add=True)
#: Property containing the last date that this GradingRecord was modified.
modified = db.DateTimeProperty(auto_now=True)