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gatsby-node.mjs
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gatsby-node.mjs
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import path from 'path'
import { createFilePath } from 'gatsby-source-filesystem'
export function onCreateNode({ node, getNode, actions }) {
const { createNodeField } = actions
if (node.internal.type === `Mdx`) {
const parent = getNode(node.parent)
createNodeField({
node,
name: `collection`,
value: parent.sourceInstanceName,
})
const slug = createFilePath({ node, getNode })
const [, date, title] =
slug.match(/^\/posts\/([\d]{4}-[\d]{2}-[\d]{2})-{1}(.+)\/$/) || []
const isPost = !!date
if (isPost) {
createNodeField({
node,
name: `date`,
value: `${date}T00:00:00.0000-08:00`,
})
createNodeField({ node, name: `slug`, value: `/posts/${title}/` })
} else {
createNodeField({ node, name: `slug`, value: slug })
}
}
}
export async function createPages({ graphql, actions }) {
const { createPage } = actions
const result = await graphql(`
query {
allMdx {
edges {
node {
fields {
date
slug
}
internal {
contentFilePath
}
}
}
}
}
`)
result.data.allMdx.edges.map(({ node }) => {
const isPost = !!node.fields.date
createPage({
path: node.fields.slug,
component: path.resolve(
`./src/components/layouts/${
isPost ? 'post' : 'page'
}.jsx?__contentFilePath=${node.internal.contentFilePath}`,
),
context: {
date: node.fields.date,
slug: node.fields.slug,
},
})
})
}