def on_cleanup_error(function, path, excinfo):
                click.secho("warning: failed to remove file or directory: {}\n"
                            "please delete it manually.".format(path),
                            fg="red")
def add_user():
    form = AddUserForm()
    if form.validate_on_submit():
        form.save()
        flash(_("User added."), "success")
        return redirect(url_for("management.users"))

    return render_template("management/user_form.html", form=form,
                           title=_("Add User"))