taskapp/events/task.py
author nishanth
Tue, 02 Mar 2010 03:21:20 +0530
changeset 167 b61e45074ba1
parent 166 ac72d641046e
child 189 8f5fb15ffd9b
permissions -rw-r--r--
implemented deleting of a task.
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from datetime import datetime
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from pytask.taskapp.models import Profile, Task, Comment, Claim, Map
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from pytask.taskapp.utilities.task import getTask
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from pytask.taskapp.utilities.request import create_request
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from pytask.taskapp.utilities.helper import get_key
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from pytask.taskapp.utilities.notification import create_notification
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def publishTask(task, rem_mentors=True, rem_comments=True):
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    """ set the task status to open """
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    if task.sub_type == 'D':
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        deps, subs = task.map_subs.all(), []
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    else:
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        subs, deps = task.map_subs.all(), []
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    if subs or any(map(lambda t:t.status!="CM",deps)):
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        task.status = "LO"
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    else:
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        task.status = "OP"
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    if rem_mentors:
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        task.mentors.clear()
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        task.mentors.add(task.created_by)
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    if rem_comments:
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        task.comment_set.update(is_deleted=True)
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        task.comment_set.update(deleted_by=task.created_by)
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    task.published_datetime = datetime.now()
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    task.save()
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    pending_requests = task.request_task.filter(is_valid=True, is_replied=False)
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    pending_requests.update(is_valid=False)
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    return task
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def addSubTask(main_task, sub_task):
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    """ add the task to subs attribute of the task and update its status.
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    sub task can be added only if a task is in UP/OP/LO state.
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    """
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    ## Shall modify after talking to pr about subtasks
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    ## I think i might even remove the concept of subtasks
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    main_task.sub_type = "S"
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    main_task.save()
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    try:
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        mapobj = Map.objects.get(main=main_task)
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    except Map.DoesNotExist:
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        mapobj = Map()
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        mapobj.main = main_task
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        mapobj.save()
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    mapobj.subs.add(sub_task)
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    mapobj.save()
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    sub_tasks = getTask(main_task.id).subs
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    if main_task.status == "OP":
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        if any(map(lambda t:t.status!="CM",sub_tasks)):
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            main_task.status = "LO"
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        else:
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            "CM"
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    main_task.save()
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def addDep(main_task, dependency):
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    """ add the dependency task to deps attribute of the task.
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    update the status of main_task accordingly.
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    note that deps can be added only if task is in UP/OP/LO state.
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    And also if the task doesn't have any subs.
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    """
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    main_task.sub_type = "D"
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    main_task.save()
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    try:
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        mapobj = Map.objects.get(main=main_task)
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    except Map.DoesNotExist:
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        mapobj = Map()
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        mapobj.main = main_task
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        mapobj.save()
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    mapobj.subs.add(dependency)
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    mapobj.save()
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    deps = getTask(main_task.id).deps
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    if main_task.status in ["OP", "LO"]: 
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        if all(map(lambda t:t.status=="CM",deps)):
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            main_task.status = "OP"
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        else:
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            main_task.status = "LO"
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    main_task.save()
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def reqMentor(task, mentor, req_by):
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    """ create a request object with role as MT.
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    """
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    create_request(sent_by=req_by, role="MT", sent_to=mentor, task=task) 
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def addMentor(task,mentor):
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    """ add the mentor to mentors list of the task """
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    task.mentors.add(mentor)
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    task.save()
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    return task     
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def createTask(title,desc,created_by,credits):
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    """ creates a bare minimum task with title, description and credits.
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    the creator of the task will be assigned as a mentor for the task.
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    """
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    while True:
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        id = get_key()
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        try:
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            task = Task.objects.get(id__iexact=id)
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            continue
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        except Task.DoesNotExist:
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            break
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    try:
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        task = Task.objects.exclude(status="DL").get(title__iexact=title)
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        return None
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    except:
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        task = Task(title=title)
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    task.id = id 
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    task.desc = desc
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    task.created_by = created_by
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    task.credits = credits
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    task.creation_datetime = datetime.now()
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    task.published_datetime = datetime.now()
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    task.save()
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    return task
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def addClaim(task, message, user):
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    """ add claim data to the database if it does not exist 
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    and also update the claimed users field of the task.
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    """
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    task.claimed_users.add(user)
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    task.save()
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    claim = Claim()
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    claim.message = message
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    claim.task = task
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    claim.user = user
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    claim.creation_datetime = datetime.now()
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    claim.save()
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    user.request_sent_to.filter(is_replied=False, is_valid=True, role="MT", task=task).update(is_valid=False)
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def assignTask(task, added_user, assigned_by):
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    """ check for the status of task and assign it to the particular user """
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    if task.status in ['OP', 'WR']:
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        task.assigned_users.add(added_user)
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        task.claimed_users.remove(added_user)
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        task.status = "WR"
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    task.save()
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    create_notification("AU", added_user, assigned_by, task=task)
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def updateTask(task, title=None, desc=None, credits=None, tags_field=None):
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    """ update the property accordingly.
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    while updating title, check for uniqueness of title.
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    return None if any error. 
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    """
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    if title:
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        try:
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            task.title = title
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            task.save()
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        except Task.IntegrityError:
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            return None
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    if desc:task.desc = desc
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    if credits:task.credits = credits
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    if tags_field:task.tags_field = tags_field
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    task.save()
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    return task
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def removeTask(main_task, sub_task):
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    """ get the corresponding map object and remove the sub_task.
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    """
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    mapobj = Map.objects.get(main=main_task)
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    mapobj.subs.remove(sub_task)
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    mapobj.save()
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def removeUser(main_task, rem_user, removed_by, reason=None):
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    """ right now, just remove the user from the list of assigned_users.
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    """
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    main_task.assigned_users.remove(rem_user)
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    main_task.save()
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    ## TODiscuss : when a user is kicked off, his pending requests for pynts is made invalid
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    rem_user.request_receiving_user.filter(task=main_task,role="PY",is_valid=True,is_replied=False).update(is_valid=False)
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    create_notification("RU", rem_user, removed_by, task=main_task, remarks=reason)
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    ## TODO : create notification to the victim
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def assignCredits(task, given_by, given_to, points):
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    """ make a proper request object.
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    """
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    create_request(sent_by=given_by, role="PY", task=task, receiving_user=given_to, pynts=points ) 
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def completeTask(task, marked_by):
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    """ set the status of task as completed.
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    We dont have to inform parent tasks.
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    That part is taken care by getTask method.
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    """
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    task.status = "CM"
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    task.save()
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    pending_requests = task.request_task.filter(is_replied=False)
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    pending_requests.update(is_valid=False)
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    ## generate notification appropriately using marked_by
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    ## we also have to mark unread requests as invalid
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    for a_user in task.assigned_users.all():
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        create_notification(role="CM", sent_to=a_user, sent_from=marked_by, task=task)
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    for a_user in task.claimed_users.all():
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        create_notification(role="CM", sent_to=a_user, sent_from=marked_by, task=task)
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    for a_mentor in task.mentors.all():
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        create_notification(role="CM", sent_to=a_mentor, sent_from=marked_by, task=task)
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def closeTask(task, closed_by, reason=None):
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    """ set the status of task as CD.
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    generate notifications accordingly.
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    """
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    task.status = "CD"
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    task.save()
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    pending_requests = task.request_task.filter(is_replied=False)
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    pending_requests.update(is_valid=False)
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    ## generate notifications here
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    for a_user in task.assigned_users.all():
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        create_notification(role="CD", sent_to=a_user, sent_from=closed_by, task=task, remarks=reason)
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    for a_user in task.claimed_users.all():
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        create_notification(role="CD", sent_to=a_user, sent_from=closed_by, task=task, remarks=reason)
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    for a_mentor in task.mentors.all():
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        create_notification(role="CD", sent_to=a_mentor, sent_from=closed_by, task=task, remarks=reason)
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def deleteTask(task, deleted_by, reason=None):
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    """ set the task status as DL
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    notify all its other viewers about the deleting of task.
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    """
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    task.status = "DL"
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    task.save()
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    pending_requests = task.request_task.filter(is_replied=False,is_valid=True)
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    pending_requests.update(is_valid=False)
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    for a_mentor in task.mentors.exclude(id=deleted_by.id):
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        create_notification("DL", sent_to=a_mentor, sent_from=deleted_by, task=task, remarks=reason)