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gatsby-node.js
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gatsby-node.js
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exports.onCreateNode = ({ node, actions, getNode }) => {
const { createNodeField } = actions
if (node.internal.type === `MarkdownRemark`) {
const value = createFilePath({ node, getNode })
createNodeField({
name: `slug`,
node,
value,
})
}
}
exports.createPages = async function ({ actions, graphql }) {
const { data } = await graphql(`
query {
allMdx(sort: { fields: frontmatter___date, order: DESC }) {
edges {
node {
frontmatter {
slug
title
}
id
}
}
}
}
`)
// Create paginated pages for post
const posts = data.allMdx.edges
const postPerPage = 20
const numPages = Math.ceil(posts.length / postPerPage)
Array.from({ length: numPages }).forEach((_, i) => {
actions.createPage({
path: i === 0 ? `/blog` : `/blog/${i + 1}`,
component: require.resolve("./src/templates/allPosts.js"),
context: {
limit: postPerPage,
skip: i * postPerPage,
numPages,
currentpage: i + 1,
},
})
})
//Create single blog posts
posts.forEach((edge, index) => {
const slug = edge.node.frontmatter.slug
const id = edge.node.id
const previous = index === posts.length - 1 ? null : posts[index + 1].node
const next = index === 0 ? null : posts[index - 1].node
actions.createPage({
path: `blog/${slug}`,
component: require.resolve(`./src/templates/singlePost.js`),
context: { id, previous, next },
})
})
}