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gatsby-node.js
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gatsby-node.js
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const path = require('path')
const { createFilePath } = require('gatsby-source-filesystem')
const { paginate } = require('gatsby-awesome-pagination')
exports.createPages = async ({ graphql, actions, reporter }) => {
// Destructure the createPage function from the actions object
const { createPage } = actions
const result = await graphql(`
query {
allMarkdownRemark(
sort: {fields: frontmatter___kana, order: DESC}
) {
edges {
node {
frontmatter {
words
}
fields {
slug
}
}
}
}
}
`)
if (result.errors) {
reporter.panicOnBuild('🚨 ERROR: Loading "createPages" query')
}
// Create blog post pages.
const items = result.data.allMarkdownRemark.edges
paginate({
createPage, // The Gatsby `createPage` function
items, // An array of objects
itemsPerPage: 30, // AllMd.tsx のデフォルト値
pathPrefix: ({ idx }) => (idx === 0 ? '/' : '/pages'), // Creates pages like `/page`, `/page/2`, etc
component: path.resolve('./src/templates/pager.tsx'), // Just like `createPage()`
})
// you'll call `createPage` for each result
items.forEach((post, index) => {
const previous = index === items.length - 1 ? null : items[index + 1].node
const next = index === 0 ? null : items[index - 1].node
createPage({
// This is the slug you created before
// (or `node.frontmatter.slug`)
path: post.node.fields.slug,
// This component will wrap our MDX content
component: path.resolve('./src/templates/details.tsx'),
// You can use the values in this context in
// our page layout component
context: {
slug: post.node.fields.slug,
previous,
next,
},
})
})
}
exports.onCreateNode = ({ node, actions, getNode }) => {
const { createNodeField } = actions
if (node.internal.type === 'MarkdownRemark') {
const value = createFilePath({ node, getNode })
createNodeField({
name: 'slug',
node,
value,
})
}
}