placeholderadmin.py 文件源码

def clear_placeholder(self, request, placeholder_id):
        placeholder = get_object_or_404(Placeholder, pk=placeholder_id)
        if not self.has_clear_placeholder_permission(request, placeholder):
            return HttpResponseForbidden(force_text(_("You do not have permission to clear this placeholder")))
        language = request.GET.get('language', None)
        plugins = placeholder.get_plugins(language)
        opts = Placeholder._meta
        using = router.db_for_write(Placeholder)
        app_label = opts.app_label
        deleted_objects, __, perms_needed, protected = get_deleted_objects(
            plugins, opts, request.user, self.admin_site, using)

        obj_display = force_text(placeholder)
        if request.POST:  # The user has already confirmed the deletion.
            if perms_needed:
                return HttpResponseForbidden(force_text(_("You do not have permission to clear this placeholder")))
            self.log_deletion(request, placeholder, obj_display)
            placeholder.clear(language)
            self.message_user(request, _('The placeholder "%(obj)s" was cleared successfully.') % {
                'obj': force_text(obj_display)})
            self.post_clear_placeholder(request, placeholder)
            return HttpResponseRedirect(admin_reverse('index', current_app=self.admin_site.name))
        if perms_needed or protected:
            title = _("Cannot delete %(name)s") % {"name": obj_display}
        else:
            title = _("Are you sure?")
        context = {
            "title": title,
            "object_name": _("placeholder"),
            "object": placeholder,
            "deleted_objects": deleted_objects,
            "perms_lacking": perms_needed,
            "protected": protected,
            "opts": opts,
            "app_label": app_label,
        }
        return TemplateResponse(request, "admin/cms/page/plugin/delete_confirmation.html", context,
                                current_app=self.admin_site.name)