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gatsby-node.js
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gatsby-node.js
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const { createFilePath } = require(`gatsby-source-filesystem`)
const path = require(`path`)
exports.createPages = ({ actions, graphql }) => {
const { createPage } = actions
const postLayoutTemplate = path.resolve(
'src/templates/post-layout.js'
)
return graphql(`
{
allMdx(
sort: { fields: [frontmatter___date], order: DESC }
filter: { frontmatter: { published: { eq: true } } }
) {
nodes {
id
excerpt(pruneLength: 250)
frontmatter {
title
date
category
author
pin
}
fields {
slug
}
}
}
}
`).then(result => {
if (result.errors) {
throw result.errors
}
const posts = result.data.allMdx.nodes
posts.forEach((post, index) => {
const previous =
index === post.length - 1 ? null : posts[index + 1]
const next = index === 0 ? null : posts[index - 1]
createPage({
path: post.fields.slug,
component: postLayoutTemplate,
context: {
slug: post.fields.slug,
previous,
next,
},
})
})
})
}
exports.onCreateNode = ({ node, actions, getNode }) => {
const { createNodeField } = actions
if (node.internal.type === `Mdx`) {
const value = createFilePath({ node, getNode })
createNodeField({
name: `slug`,
node,
value,
})
createNodeField({
name: 'editLink',
node,
value: `https://github.com/molebox/richardhaines.dev/edit/master${node.fileAbsolutePath.replace(
__dirname,
'',
)}`,
})
}
}