views.py 文件源码

def tasks(request, contest_id):
    contest = get_object_or_404(models.TaskBasedContest, pk=contest_id)
    if not contest.is_visible_in_list and not request.user.is_staff:
        return HttpResponseNotFound()

    if not contest.is_started() and not request.user.is_staff:
        messages.error(request, '%s is not started yet' % contest.name)
        return redirect(contest)

    solved_tasks_ids = {}
    if request.user.is_authenticated():
        participant = contest.get_participant_for_user(request.user)
        solved_tasks_ids = contest.get_tasks_solved_by_participant(participant)
    else:
        participant = None

    # Iterate all policies, collect opened tasks
    opened_tasks_ids = set(
        itertools.chain.from_iterable(
            policy.get_open_tasks(participant) for policy in contest.tasks_opening_policies.all()
        )
    )

    if contest.tasks_grouping == models.TasksGroping.OneByOne:
        tasks = contest.tasks
        return render(request, 'contests/tasks_one_by_one.html', {
            'current_contest': contest,

            'contest': contest,
            'tasks': tasks,
            'solved_tasks_ids': solved_tasks_ids,
            'opened_tasks_ids': opened_tasks_ids,
        })
    if contest.tasks_grouping == models.TasksGroping.ByCategories:
        categories = contest.categories
        return render(request, 'contests/tasks_by_categories.html', {
            'current_contest': contest,

            'contest': contest,
            'categories': categories,
            'solved_tasks_ids': solved_tasks_ids,
            'opened_tasks_ids': opened_tasks_ids,
        })