next.js/examples/with-relay-modern/components/BlogPosts.js

import React from 'react'
import { createFragmentContainer, graphql } from 'react-relay'
import BlogPostPreview from './BlogPostPreview'

const BlogPosts = props => {
  return (
    <div>
      <h1>Blog posts</h1>
      {props.viewer.allBlogPosts.edges.map(({ node }) => (
        <BlogPostPreview key={node.id} post={node} />
      ))}
    </div>
  )
}

export default createFragmentContainer(BlogPosts, {
  viewer: graphql`
    fragment BlogPosts_viewer on Viewer {
      allBlogPosts(first: 10, orderBy: createdAt_DESC) {
        edges {
          node {
            ...BlogPostPreview_post
            id
          }
        }
      }
    }
  `
})