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
                    }
                }
            }
        }
    `
})