portfolio/src/templates/Project.jsx

import React, { Component, Fragment } from 'react'
import PropTypes from 'prop-types'
import Helmet from 'react-helmet'
import ReactMarkdown from 'react-markdown'
import Content from '../components/atoms/Content'
import FullWidth from '../components/atoms/FullWidth'
// import ProjectImage from '../components/atoms/ProjectImage'
import Img from 'gatsby-image'
import ProjectTechstack from '../components/molecules/ProjectTechstack'
import ProjectLinks from '../components/molecules/ProjectLinks'
import ProjectNav from '../components/molecules/ProjectNav'
import SEO from '../components/atoms/SEO'
import './Project.scss'

class Project extends Component {
  constructor() {
    super()
  }

  render() {
    const postMeta = this.props.data.projectsJson
    const pathContext = this.props.pathContext

    const { title, description, links, techstack } = postMeta
    const { next, previous } = pathContext

    return <Fragment>
        <Helmet>
          <title>{title}</title>
        </Helmet>

        <SEO postMeta={postMeta} />

        <article className="project">
          <Content>
            <h1 className="project__title">{title}</h1>
            <ReactMarkdown source={description} escapeHtml={false} className="project__description" />

            <FullWidth>
              <Img sizes={this.props.data.mainImage.childImageSharp.sizes} alt={title} />
            </FullWidth>

            {/* {!!this.props.data.additionalImage && <FullWidth>
                {this.props.data.additionalImage.map(image => (
                  <Img
                    key={image}
                    sizes={this.props.data.additionalImage.childImageSharp.sizes}
                    alt={title}
                  />
                ))}
              </FullWidth>} */}

            <footer className="project__meta">
              {!!techstack && <ProjectTechstack techstack={techstack} />}
              {!!links && <ProjectLinks links={links} />}
            </footer>
          </Content>
        </article>

        <ProjectNav previous={previous} next={next} />
      </Fragment>
  }
}

Project.propTypes = {
  data: PropTypes.object.isRequired,
  pathContext: PropTypes.object.isRequired,
}

export default Project

export const projectQuery = graphql`
  query ProjectBySlug($slug: String!, $img: String!) {
    projectsJson(slug: { eq: $slug }) {
      title
      slug
      img
      img_more
      description
      links {
        title
        url
      }
      techstack
    }
    mainImage: file(relativePath: { eq: $img }) {
      childImageSharp {
        sizes(maxWidth: 1440) {
          ...GatsbyImageSharpSizes
        }
      }
    }
  }
`