intro-to-jamstack/gatsby-node.js at master · codingblocks/intro-to-jamstack · GitHub

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const path = require('path')

const generateContentPages = (actions, markdownData) => {
  const { createPage } = actions
  markdownData.forEach(({ node }) => {
    createPage({
      path: node.frontmatter.path,
      component: path.resolve(
        `src/templates/${String(node.frontmatter.contentType)}.js`
      ),
      context: {} // additional data can be passed via context
    })
  })
}

const generateConferencePages = (actions, markdownData) => {
  const { createPage } = actions
  markdownData.forEach(({ node }) => {
    createPage({
      path: `/conference/${node.slug}`,
      component: path.resolve(`src/templates/conference.js`),
      context: { conference: node } // additional data can be passed via context
    })
  })
}

exports.createPages = ({ actions, graphql }) => {
  return graphql(`
    {
      allMarkdownRemark {
        edges {
          node {
            frontmatter {
              contentType
              path
            }
          }
        }
      }
      postgres {
        allConferences {
          edges {
            node {
              title
              slug
              location
              startDate: startdate
              status
              twitter
              cfpDeadline: cfpdeadline
              cfpLink: cfplink
            }
          }
        }
      }
    }
  `).then(result => {
    if (result.errors) {
      return Promise.reject(result.errors)
    }
    generateContentPages(actions, result.data.allMarkdownRemark.edges)
    generateConferencePages(actions, result.data.postgres.allConferences.edges)
  })
}