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blog/gatsby-node.js

72 lines
1.8 KiB
JavaScript

const { createMarkdownFields } = require('./gatsby/onCreateNode')
const { createExifFields } = require('./gatsby/exif')
const {
generatePostPages,
generateTagPages,
generateRedirectPages
} = require('./gatsby/createPages')
const { itemsPerPage } = require('./config')
exports.onCreateNode = ({ node, actions, getNode }) => {
const { createNodeField } = actions
// Markdown files
if (node.internal.type === 'MarkdownRemark') {
createMarkdownFields(node, createNodeField, getNode)
}
// Image files
if (node.internal.mediaType === 'image/jpeg') {
createExifFields(node, createNodeField)
}
}
exports.createPages = ({ graphql, actions }) => {
const { createPage, createRedirect } = actions
return new Promise((resolve, reject) => {
resolve(
graphql(
`
{
allMarkdownRemark(sort: { fields: [fields___date], order: DESC }) {
edges {
node {
fields {
slug
date
}
frontmatter {
type
tags
}
}
}
}
}
`
).then(result => {
if (result.errors) {
/* eslint no-console: "off" */
console.log(result.errors)
reject(result.errors)
}
const posts = result.data.allMarkdownRemark.edges
const numPages = Math.ceil(posts.length / itemsPerPage)
// Generate posts & posts index
generatePostPages(createPage, posts, numPages)
// Generate Tag Pages
generateTagPages(createPage, posts, numPages)
// create manual redirects
generateRedirectPages(createRedirect)
resolve()
})
)
})
}