contest.py 文件源码

def fetch_task(request, contest_id):
    contest = Contest.objects.get(pk=contest_id)
    if not request.user.has_perm('manage_contest', contest):
        raise PermissionDenied
    elif request.method == 'POST':
        form = TaskFetchForm(request.POST)
        if form.is_valid():
            fetched_task = copy_task(form)
            fetched_task.contest = contest
            if save_task(fetched_task):
                messages.add_message(
                    request,
                    messages.SUCCESS,
                    'New task has been added to contest %s.' % contest.name)
                add_task_to_groups(contest, fetched_task)
            else:
                messages.add_message(
                    request,
                    messages.ERROR,
                    'Unable to fetch task %s. Please report this accident'
                    ' to administrator.' % fetched_task)

    return HttpResponseRedirect(
        reverse('contest_details', args=[contest_id]) + '?current_tab=tasks')