old-v2-frontend/src/pages/post-default.js

import React, { Component } from 'react';

class PostDefault extends Component {
  render() {
    const { data } = this.props
    return (
      <div>
        <h1>Specific Post - {data.wordpressPost.title}</h1>
        <div dangerouslySetInnerHTML={{
          __html: data.wordpressPost.content
        }}
        />
      </div>
    );
  }
}

export const query = graphql`
  query PostDefaultQuery($slug: String!) {
    wordpressPost(slug: {eq: $slug}) {
      title
      slug
      content
    }
  }
`

export default PostDefault;