renderBreadcrumb() {

        const {routes} = this.props;

        const items = routes.map((route, idx) => {

            let content = null;

            if (idx == 0) {

                content = <IndexLink to="/">{route.name}</IndexLink>

            } else {

                content = route.name;

            }

            return <Breadcrumb.Item key={idx}>{content}</Breadcrumb.Item>;

        });

        return <Breadcrumb>{items}</Breadcrumb>;

    }

 {this.renderBreadcrumb()}