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gatsby-node.js
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gatsby-node.js
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const path = require("path")
const { setFieldsOnGraphQLNodeType } = require("./navigation")
module.exports.setFieldsOnGraphQLNodeType = setFieldsOnGraphQLNodeType
// Create slug and title fields for each file
module.exports.onCreateNode = ({ node, actions, getNode }) => {
const { createNodeField } = actions
if (node.internal.type === "Mdx") {
const parent = getNode(node.parent)
let slug = parent.relativePath.replace(parent.ext, "")
if (slug === "index") {
slug = ""
}
createNodeField({ node, name: "slug", value: `/${slug}` })
createNodeField({
name: "title",
node,
value: node.frontmatter.title,
})
}
}
module.exports.createPages = async ({ graphql, actions }) => {
const { createPage } = actions
const bookTemplate = path.resolve("./src/templates/Book.jsx")
const res = await graphql(`
query {
allMdx {
edges {
node {
frontmatter {
type
}
fields {
slug
}
}
}
}
}
`)
res.data.allMdx.edges.forEach(edge => {
if (edge.node.frontmatter.type === "chapter-heading") {
return
}
createPage({
component: bookTemplate,
path: edge.node.fields.slug,
context: {
slug: edge.node.fields.slug,
},
})
})
}