taskapp/views/task.py
author nishanth
Thu, 25 Feb 2010 03:47:23 +0530
changeset 90 b2426897ff18
parent 89 1cc03941ed5d
child 91 1b5ad4b7c40e
permissions -rw-r--r--
our task model does not meet out needs. so modified it and added a model called map. made the changes in views accordingly.phew!!!. this one took the hell out of me :( .
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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, AddTaskForm 
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from pytask.taskapp.events.task import createTask, addMentor, publishTask, addSubTask, addDep, 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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    deps, subs = task.deps, task.subs
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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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            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.filter(is_active=True))
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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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        for a_user in task.assigned_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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b2426897ff18 our task model does not meet out needs. so modified it and added a model called map. made the changes in views accordingly.phew!!!. this one took the hell out of me :( .
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    deps, subs = task.deps, task.subs
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    is_plain = False if deps or subs else True
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    ## again a brute force method
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    valid_tasks = []
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    for a_task in Task.objects.all():
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        if not ( a_task in deps or a_task in subs or a_task.status=="CD" or a_task==task ):
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            valid_tasks.append(a_task)
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    task_choices = [ (_.id,_.title) for _ in valid_tasks ]
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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 ["UP", "OP", "LO"]:
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            form = AddTaskForm(task_choices, is_plain)
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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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                data = request.POST
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                if is_plain and not data.get('type', None): errors.append('Please choose which type of task(s) do you want to add.')
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                if not data.get('task', None): errors.append('Please choose a one task')
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                if not errors:
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                    if is_plain:
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                        update_method = addDep if data['type'] == "D" else addSubTask
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                    elif deps:
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                        update_method = addDep
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                    elif subs:
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                        update_method = addSubTask
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                    else:
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                        print "Screw you"
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                    ## we might iterate over a task list later on
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                    task_id = data['task']
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                    sub_or_dep = getTask(task_id)
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                    update_method(task, sub_or_dep)
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                    return redirect(task_url)
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                else:
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                    return render_to_response('task/addtask.html', {'user':user, 'form':form, 'errors':errors})
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            else:
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                return render_to_response('task/addtask.html', {'user':user, 'form':form, 'errors':errors})
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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 remove_task(request, tid):
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    """ display a list of tasks and remove the selectes ones.
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    """
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    pass
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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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   224
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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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   227
    
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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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   230
    
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    errors = []
21
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   232
    
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   233
    user = request.user
55
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   234
    task = getTask(tid)
22
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    claims = Claim.objects.filter(task=task)
72
9fc60a221016 modified claim_task view to suit the new design
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   236
9fc60a221016 modified claim_task view to suit the new design
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    mentors = task.mentors.all()
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   238
    claimed_users = task.claimed_users.all()
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   239
    assigned_users = task.assigned_users.all()
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   240
    
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    is_guest = True if not user.is_authenticated() else False
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    is_mentor = True if user in mentors else False
22
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   243
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    task_claimable = True if task.status in ["OP", "WR"] else False
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   245
    user_can_claim = True if  task_claimable and not ( is_guest or is_mentor ) and ( user not in claimed_users ) and ( user not in assigned_users )  else False
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   246
    task_claimed = True if claimed_users else False
25
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   247
    
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   248
    context = {'user':user,
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               '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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   256
    
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   257
    if not is_guest:
25
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   258
        if request.method == "POST":
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   259
            claim_proposal = request.POST['message']
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   260
            if claim_proposal:
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                addClaim(task, claim_proposal, user)
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                return redirect(claim_url)
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   263
            else:
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   264
                errors.append('Please fill up proposal in the field below')
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   265
                return render_to_response('task/claim.html', context)
22
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   266
        else:
25
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            return render_to_response('task/claim.html', context)
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   268
    else:
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   269
        return show_msg('You are not logged in to view claims for this task', task_url, 'view the task')
18
a39549bd5b08 implemented create task view which needed task.py in events. added a method show_msg to views/user.py and used it in logoff view.
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a39549bd5b08 implemented create task view which needed task.py in events. added a method show_msg to views/user.py and used it in logoff view.
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   271
    
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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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   275
    """
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   276
    
25
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    task_url = "/task/view/tid=%s"%tid
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   278
    
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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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    claimed_users = task.claimed_users.all()
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    assigned_users = task.assigned_users.all()
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    task_claimed = True if claimed_users 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 claimed_users)
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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 assigned_users:
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            return show_msg('When the no of users you need for the task is more than the no of users willing to do the task, I\'d say please re consider the task :P',task_url, 'view the task')
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        else:
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            return show_msg('Wait for ppl to claim dude... slow and steady wins the race :)', 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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    task = Task.objects.get(id=tid)