app/soc/modules/ghop/models/task.py
author Madhusudan C.S. <madhusudancs@gmail.com>
Mon, 08 Jun 2009 08:48:24 +0200
changeset 2407 e23fce20ad3a
parent 2399 65a83ae32703
child 2679 0ede2f3adbc1
permissions -rw-r--r--
Changed GHOP module imports to be consistent with rest of Melange code. The imports used the from <module-path> import <module> as <local_module_name> syntax. These kinds of imports are changed to import <module_path.module_name> syntax to be consistent with the Melange code base. Reviewed by: Lennard de Rijk
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#!/usr/bin/python2.5
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#
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# Copyright 2009 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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"""This module contains the GHOP Task Model.
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"""
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__authors__ = [
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  '"Madhusudan.C.S" <madhusudancs@gmail.com>',
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  '"Lennard de Rijk" <ljvderijk@gmail.com>',
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]
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from google.appengine.ext import db
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from django.utils.translation import ugettext
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import soc.models.linkable
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import soc.models.role
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import soc.models.student
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import soc.models.user
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import soc.modules.ghop.models.program
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class GHOPTask(soc.models.linkable.Linkable):
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  """Model for a task used in GHOP workflow.
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  The scope property of Linkable will be set to the Organization to which
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  this task belongs to. A link_id will be generated automatically and will
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  have no specific meaning other than identification.
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  """
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  #: Required field indicating the "title" of the task
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  title = db.StringProperty(required=True,
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                            verbose_name=ugettext('Title'))
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  title.help_text = ugettext('Title of the task')
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  #: Required field containing the description of the task
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  description = db.TextProperty(required=True, 
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                                verbose_name=ugettext('Description'))
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  description.help_text = ugettext('Complete description of the task')
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  #: Field indicating the difficulty level of the Task. This is not
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  #: mandatory so the it can be assigned at any later stage. 
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  #: The options are configured by a Program Admin.
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  difficulty = db.StringProperty(required=False,
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                                 verbose_name=ugettext('Difficulty'))
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  difficulty.help_text = ugettext('Difficulty Level of the task')
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  #: Required field which contains the type of the task. These types are
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  #: configured by a Program Admin.
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  type = db.StringListProperty(required=True, 
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                               verbose_name=ugettext('Task Type'))
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  type.help_text = ugettext('Type of the task')
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  #: A field which contains time allowed for completing the task (in hours)
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  #: from the moment that this task has been assigned to a Student
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  time_to_complete = db.IntegerProperty(required=True,
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                                        verbose_name=('Time to Complete'))
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  time_to_complete.help_text = ugettext(
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      'Time allowed to complete the task, in hours, once it is claimed')
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  #: List of Mentors assigned to this task. A Mentor who creates this
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  #: task is assigned as the Mentor by default. An Org Admin will have
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  #: to assign a Mentor upon task creation.
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  mentors = db.ListProperty(item_type=db.Key, default=[])
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  #: User profile to whom this task has been claimed by. This field
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  #: is mandatory for claimed tasks
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  user = db.ReferenceProperty(reference_class=soc.models.user.User,
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                              required=False,
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                              collection_name='assigned_tasks')
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  #: Student profile to whom this task is currently assigned to. If the user
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  #: has registered as a Student than this field will be filled in. This field
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  #: is mandatory for all Tasks in the closed state.
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  student = db.ReferenceProperty(reference_class=soc.models.student.Student,
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                                 required=False,
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                                 collection_name='assigned_tasks')
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  #: Program in which this Task has been created
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  program = db.ReferenceProperty(
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      reference_class=soc.modules.ghop.models.program.GHOPProgram,
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      required=True, collection_name='tasks')
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  #: Required property which holds the state, the Task is currently in.
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  #: This is a hidden field not shown on forms. Handled by logic internally.
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  #: The state can be one of the following:
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  #: unapproved: If Task is created by a Mentor, this is the automatically
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  #:   assigned state.
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  #: unpublished: This Task is not published yet.
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  #: open: This Task is open and ready to be claimed.
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  #: reopened: This Task has been claimed but never finished and has been
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  #:   reopened.
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  #: claim_requested: A Student has requested to claim this task.
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  #: claimed: This Task has been claimed and someone is working on it.
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  #: action_needed: Work on this Task must be submitted for review within 
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  #:   24 hours.
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  #: closed: Work on this Task has been completed to the org's content.
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  #: awaiting_registration: Student has completed work on this task, but
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  #:   needs to complete Student registration before this task is closed.
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  #: needs_work: This work on this Tasks needs a bit more brushing up. This
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  #:   state is followed by a Mentor review.
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  #: needs_review: Student has submitted work for this task and it should
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  #:   be reviewed by a Mentor.
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  status = db.StringProperty(
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      required=True, verbose_name=ugettext('Status'),
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      choices=['unapproved', 'unpublished', 'open', 'reopened', 
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               'claim_requested', 'claimed', 'action_needed', 
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               'closed', 'awaiting_registration', 'needs_work',
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               'needs_review'],
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      default='unapproved')
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  #: A field which indicates if the Task was ever in the Reopened state.
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  #: True indicates that its state was Reopened once, false indicated that it
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  #: has never been in the Reopened state.
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  was_reopened = db.BooleanProperty(default=False,
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                                    verbose_name=ugettext('Has been reopened'))
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  #: This field is set to the next deadline that will have consequences for
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  #: this Task. For instance this will store a DateTime property which will
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  #: tell when this Task should be completed.
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  deadline = db.DateTimeProperty(required=False,
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                                 verbose_name=ugettext('Deadline'))
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  #: Required field containing the Mentor/Org Admin who created this task
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  created_by = db.ReferenceProperty(reference_class=soc.models.role.Role,
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                                    required=True,
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                                    collection_name='created_tasks',
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                                    verbose_name=ugettext('Created by'))
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  #: Date when the proposal was created
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  created_on = db.DateTimeProperty(required=True, auto_now_add=True,
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                                   verbose_name=ugettext('Created on'))
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  #: Required field containing the Mentor/Org Admin who last edited this
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  #: task. It changes only when Mentor/Org Admin changes title, description,
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  #: difficulty, type, time_to_complete.
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  modified_by = db.ReferenceProperty(reference_class=soc.models.role.Role,
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                                   required=True,
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                                   collection_name='edited_tasks',
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                                   verbose_name=ugettext('Modified by'))
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  #: Date when the proposal was last modified, should be set manually on edit
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  modified_on = db.DateTimeProperty(required=True, auto_now_add=True,
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                                    verbose_name=ugettext('Modified on'))
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  #: A field which holds the entire history of this task in JSON. The
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  #: structure of this JSON string is as follows:
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  #: {
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  #:    timestamp1: {
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  #:                   "user": User reference
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  #:                   "student": Student reference
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  #:                   ...
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  #:                   "state": "Unapproved"
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  #:                   ...
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  #:                   "edited_by": Role reference
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  #:                   
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  #:               }
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  #:    timestamp2: {
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  #:                   "state": "Unpublished"
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  #:               }
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  #: }
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  #: First dictionary item holds the values for all the properties in this
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  #: model. The subsequent items hold the properties that changed at the
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  #: timestamp given by the key.
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  #: Reference properties will be stored by calling str() on their Key.
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  history = db.TextProperty(required=True, default='')