views.py 文件源码

def logout(request, next_page=None,
           template_name='registration/logged_out.html',
           redirect_field_name=REDIRECT_FIELD_NAME,
           extra_context=None):
    """
    Logs out the user and displays 'You are logged out' message.
    """
    auth_logout(request)

    if next_page is not None:
        next_page = resolve_url(next_page)

    if (redirect_field_name in request.POST or
            redirect_field_name in request.GET):
        next_page = request.POST.get(redirect_field_name,
                                     request.GET.get(redirect_field_name))
        # Security check -- don't allow redirection to a different host.
        if not is_safe_url(url=next_page, host=request.get_host()):
            next_page = request.path

    if next_page:
        # Redirect to this page until the session has been cleared.
        return HttpResponseRedirect(next_page)

    current_site = get_current_site(request)
    context = {
        'site': current_site,
        'site_name': current_site.name,
        'title': _('Logged out')
    }
    if extra_context is not None:
        context.update(extra_context)

    return TemplateResponse(request, template_name, context)