taskapp/views/task.py
author nishanth
Wed, 24 Feb 2010 13:14:00 +0530
changeset 66 f670de53402b
parent 64 e743fe1f0f99
child 72 9fc60a221016
permissions -rw-r--r--
modified view task template and view to suit new design.
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from datetime import datetime
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from django.http import HttpResponse
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from django.shortcuts import render_to_response, redirect
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from pytask.taskapp.models import User, Task, Comment, Claim
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from pytask.taskapp.forms.task import TaskCreateForm, AddMentorForm, AssignTaskForm
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from pytask.taskapp.events.task import createTask, addMentor, publishTask, addSubTask, addClaim, assignTask, getTask, updateTask
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from pytask.taskapp.views.user import show_msg
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## everywhere if there is no task, django should display 500 message.. but take care of that in sensitive views like add mentor and all
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## do not create su user thro syncdb
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def browse_tasks(request):
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    """ display all the tasks """
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    user = request.user
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    task_list = Task.objects.order_by('id').reverse()
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    context = {'user':user,
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               'task_list':task_list,
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               }
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    return render_to_response('task/browse.html', context)
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def view_task(request, tid):
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    """ get the task depending on its tid and display accordingly if it is a get.
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    check for authentication and add a comment if it is a post request.
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    """
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    task_url = "/task/view/tid=%s"%tid
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    user = request.user
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    task = getTask(tid)
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    comments = Comment.objects.filter(task=task)
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    mentors = task.mentors.all()
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    subs = task.subs.all()
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    deps = task.deps.all()
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    errors = []
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    is_guest = True if not user.is_authenticated() else False
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    is_mentor = True if user in task.mentors.all() else False
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    context = {'user':user,
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               'task':task,
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               'comments':comments,
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               'mentors':mentors,
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               'subs':subs,
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               'deps':deps,
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               'is_guest':is_guest,
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               'is_mentor':is_mentor,
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               'errors':errors,
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              }
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    context['task_viewable'] = True if ( task.status not in ["UP", "DL"] ) or is_mentor else False
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    context['task_claimable'] = True if task.status in ["OP", "WR"] else False
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    context['can_mod_mentors'] = True if task.status in ["UP", "OP", "LO", "WR"] and is_mentor else False
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    context['can_mod_tasks'] = True if task.status in ["UP", "OP", "LO"] and is_mentor else False
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    context['can_assign_credits'] = True if task.status in ["OP", "WR"] and is_mentor else False
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    context['assigned_users'] = task.assigned_users.all()
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    if request.method == 'POST':
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        if not is_guest:
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            data = request.POST["data"]
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            task = getTask(tid)
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            new_comment = Comment(task=task, data=data, created_by=user, creation_datetime=datetime.now())
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            new_comment.save()
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            return redirect(task_url)
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        else:
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            errors.append("You must be logged in to post a comment")
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            return render_to_response('task/view.html', context)
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    else:
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        return render_to_response('task/view.html', context)
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def create_task(request):
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    """ check for rights and create a task if applicable.
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    if user cannot create a task, redirect to homepage.
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    """
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    user = request.user
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    is_guest = True if not user.is_authenticated() else False
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    if not is_guest:
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        user_profile = user.get_profile()
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        can_create_task = False if user_profile.rights == "CT" else True
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        if can_create_task:
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            if request.method == "POST":
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                form = TaskCreateForm(request.POST)
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                if form.is_valid():
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                    data = form.cleaned_data
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                    title = data['title']
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                    desc = data['desc']
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                    credits = data['credits']
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                    publish = data['publish']
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                    task = createTask(title,desc,user,credits)
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                    if not task:
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                        error_msg = "Another task with the same title exists"
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                        return render_to_response('task/create.html',{'form':form, 'error_msg':error_msg})
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                    addMentor(task, user)
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                    updateTask(task,tags_field=data['tags_field'])
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                    if publish: publishTask(task)    
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                    task_url = '/task/view/tid=%s'%task.id
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                    return redirect(task_url)
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                else:
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                    return render_to_response('task/create.html',{'form':form})
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            else:
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                form = TaskCreateForm()
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                return render_to_response('task/create.html',{'form':form})
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        else:
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            return show_msg('You are not authorised to create a task.')
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    else:
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        return show_msg('You are not authorised to create a task.')
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def add_mentor(request, tid):
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    """ check if the current user has the rights to edit the task and add him.
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    if user is not authenticated, redirect him to concerned page. """
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    task_url = "/task/view/tid=%s"%tid
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    user = request.user
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    task = getTask(tid)
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    errors = []
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    is_guest = True if not user.is_authenticated() else False
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    if (not is_guest) and user in task.mentors.all():
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        ## now iam going for a brute force method
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        user_list = list(User.objects.all())
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        for mentor in task.mentors.all():
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            user_list.remove(mentor)
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        for a_user in task.claimed_users.all():
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            user_list.remove(a_user)
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        non_mentors = ((_.id,_.username) for _ in user_list)
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        ## code till must be made elegant and not brute force like above
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        form = AddMentorForm(non_mentors)
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        if request.method == "POST":
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            uid = request.POST['mentor']
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            new_mentor = User.objects.get(id=uid)
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            addMentor(task, new_mentor)
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            return redirect(task_url)
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        else:
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            return render_to_response('task/addmentor.html', {'form':form, 'errors':errors})
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    else:
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        return show_msg('You are not authorised to add mentors for this task', task_url, 'view the task')
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def add_tasks(request, tid):
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    """ first display tasks which can be subtasks for the task and do the rest.
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    """
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    task_url = "/task/view/tid=%s"%tid
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    user = request.user
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    task = getTask(tid)
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    errors = []
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    is_guest = True if not user.is_authenticated() else False
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    if (not is_guest) and user in task.mentors.all():
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        if task.status in ["OP", "LO"]:
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            if request.method == "POST":
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                ## first decide if adding subs and deps can be in same page
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                ## only exclude tasks with status deleted
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                pass
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            else:
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                ## write a form just like add mentor and get the form here
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                pass
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        else:
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            errors = ["The task cannot be added subtasks or dependencies in this state"]
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#            return render_to_response('task/add.html', {'form':form, 'errors':errors})
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            return show_msg('The task cannot be added subtasks or dependencies now', task_url, 'view the task')
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    else:
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        return show_msg('You are not authorised to add subtasks or dependencies for this task', task_url, 'view the task')
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def claim_task(request, tid):
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    """ display a list of claims for get and display submit only if claimable """
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    ## create claims model and create a new database with required tables for it
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    ## see if that "one to n" or "n to one" relationship has a special field
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    task_url = "/task/view/tid=%s"%tid
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    claim_url = "/task/claim/tid=%s"%tid
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    errors = []
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    user = request.user
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    task = getTask(tid)
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    claims = Claim.objects.filter(task=task)
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    is_guest = True if not user.is_authenticated() else False
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    if user in task.mentors.all():
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        is_mentor = True 
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    else:
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         is_mentor = False
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    task_claimable = True if task.status in ["OP", "RE", "CL"] else False
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    user_can_claim = True if  task_claimable and not ( is_guest or is_mentor ) and ( user not in task.claimed_users.all() )  else False
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    task_claimed = True if task.status == "CL" else False
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    context = {'is_mentor':is_mentor,
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               'task':task,
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               'claims':claims,
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               'user_can_claim':user_can_claim,
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               'task_claimable':task_claimable,
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               'task_claimed':task_claimed,
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               'errors':errors}
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    if not is_guest:
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        if request.method == "POST":
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            claim_proposal = request.POST['message']
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            if claim_proposal:
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                addClaim(task, claim_proposal, user)
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                return redirect(claim_url)
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            else:
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                errors.append('Please fill up proposal in the field below')
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                return render_to_response('task/claim.html', context)
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        else:
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            return render_to_response('task/claim.html', context)
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    else:
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        return show_msg('You are not logged in to view claims for this task', task_url, 'view the task')
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def assign_task(request, tid):
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    """ first get the status of the task and then assign it to one of claimed users
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    generate list of claimed users by passing it as an argument to a function.
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    """
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    task_url = "/task/view/tid=%s"%tid
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    user = request.user
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    task = getTask(tid)
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    is_guest = True if not user.is_authenticated() else False
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    is_mentor = True if user in task.mentors.all() else False
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    task_claimed = True if task.status == "CL" else False
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    if (not is_guest) and is_mentor:
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        if task_claimed:
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            user_list = ((user.id,user.username) for user in task.claimed_users.all())
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            form = AssignTaskForm(user_list)
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            if request.method == "POST":
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                uid = request.POST['user']
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                assigned_user = User.objects.get(id=uid)
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                assignTask(task, assigned_user)
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                return redirect(task_url)
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            else:
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                return render_to_response('task/assign.html',{'form':form})
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        elif task.status == "AS":
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            return show_msg('The task is already assigned', task_url, 'view the task')
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        elif task.status == "OP":
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            return show_msg('No one has still claimed the task', task_url, 'view the task')
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        else:
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            return show_msg('The task status is %s. how can you assign it now'%task.status, task_url, 'view the task')
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    else:
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        return show_msg('You are not authorised to perform this action', task_url, 'view the task')
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def edit_task(request, tid):
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    """ see what are the attributes that can be edited depending on the current status
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    and then give the user fields accordingly.
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    """
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    return None