rickvanlieshout.com/components/ReadNext/index.jsx

import React from 'react';
import { Link } from 'react-router';
import { include as includes } from 'underscore.string';
import find from 'lodash/find';

import './style.css';

class ReadNext extends React.Component {
  render() {
    const { post } = this.props;
    const { pages } = this.props.route;
    const { readNext } = post;

    let nextPost;
    if (readNext) {
      nextPost = find(pages, page => includes(page.path, readNext));
    }
    if (!nextPost) {
      return React.createElement('noscript', null);
    }

    nextPost = find(pages, page => includes(page.path, readNext.slice(1, -1)));
    const description = nextPost.data.description;

    return (
      <div>
        <h6 style={{ fontSize: '16px', margin: '20px 0 0' }}>READ THIS NEXT:</h6>
        <h3 style={{ margin: '5px 0 0' }}>
          <Link to={nextPost.path} query={{ readNext: true }}>
            {nextPost.data.title}
          </Link>
        </h3>
        <p className="description">
          {description}
        </p>
      </div>
    );
  }
}

ReadNext.propTypes = {
  post: React.PropTypes.object.isRequired,
  pages: React.PropTypes.array,
  route: React.PropTypes.object,
};

export default ReadNext;