gatsby-node.js

const path = require("path")

exports.createPages = async ({ graphql, actions }) => {
  const { createPage } = actions

  const { data } = await graphql(`
    query {
      tours: allContentfulTour {
        edges {
          node {
            slug
          }
        }
      }
    //   posts: allContentfulPost {
    //     edges {
    //       node {
    //         slug
    //       }
    //     }
    //   }
    // }
  `)
  data.tours.edges.forEach(({ node }) => {
    createPage({
      path: `tours/${node.slug}`,
      component: path.resolve("./src/templates/tour-template.js"),
      context: {
        slug: node.slug,
      },
    })
  })
  // data.posts.edges.forEach(({ node }) => {
  //   createPage({
  //     path: `blog/${node.slug}`,
  //     component: path.resolve("./src/templates/blog-template.js"),
  //     context: {
  //       slug: node.slug,
  //     },
  //   })
  // })
}