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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`)
exports.onCreateNode = ({ node, getNode, actions }) => {
const { createNodeField } = actions
if (node.internal.type === `Mdx`) {
const slug = createFilePath({ node, getNode })
createNodeField({
node,
name: `slug`,
value: `/learn${slug}`,
})
}
}
exports.createPages = async ({ graphql, actions, reporter }) => {
const {createPage} = actions
const result = await graphql(`
query PostQuery {
allMdx(
filter: {fileAbsolutePath: {regex: "/posts/"}}
sort: { fields: [frontmatter___date, frontmatter___title], order: [ASC, ASC] }
) {
tags: group(field: frontmatter___tags) {
totalCount
fieldValue
}
categories: group(field: frontmatter___category) {
totalCount
fieldValue
}
edges {
node {
fileAbsolutePath
frontmatter {
title
}
fields {
slug
}
}
}
}
}
`)
if (result.errors) {
reporter.panicOnBuild('ERROR: Loading PostQuery for createPages')
}
let posts = result.data.allMdx.edges
posts.forEach(({ node }, index) => {
let prev, next = null
prev = index === 0 ? null: posts[index-1].node
next = index === posts.length - 1 ? null: posts[index+1].node
createPage({
path: node.fields.slug,
component: path.resolve(`./src/layouts/post-layout.js`),
context: {
slug: node.fields.slug,
prev,
next,
},
})
})
let postsPerPage = 6
let numPages = Math.ceil(posts.length/postsPerPage)
Array.from({length: numPages}).forEach((_, index) => {
createPage({
path: index === 0 ? `/learn/` : `/learn/${index+1}`,
component: path.resolve(`./src/layouts/index-layout.js`),
context: {
limit: postsPerPage,
skip: index*postsPerPage,
numPages,
currentPage: index+1,
},
})
})
let categories = result.data.allMdx.categories
createPage({
path: `/learn/categories/`,
component: path.resolve(`./src/layouts/category-index-layout.js`),
context: {
categories: categories,
}
})
categories.forEach((category) => {
const {fieldValue} = category
const categoryPath = fieldValue.replace(/ /g, '_').replace(/\//g,'by')
createPage({
path: `/learn/categories/${categoryPath}`,
component: path.resolve(`./src/layouts/category-layout.js`),
context: {
category: fieldValue,
}
})
})
let tags = result.data.allMdx.tags
createPage({
path: `/learn/tags/`,
component: path.resolve(`./src/layouts/tag-index-layout.js`),
context: {
tags: tags,
}
})
tags.forEach((tag) => {
const {fieldValue} = tag
const tagPath = fieldValue.replace(/ /g, '_').replace(/\//g,'by')
createPage({
path: `/learn/tags/${tagPath}`,
component: path.resolve(`./src/layouts/tag-layout.js`),
context: {
tag: fieldValue,
}
})
})
}
exports.onCreateWebpackConfig = ({ actions }) => {
actions.setWebpackConfig({
resolve: {
modules: [path.resolve(__dirname, "src"), "node_modules"],
},
module: {
rules: [
{ test: /\.dsp$/, use: 'raw-loader' },
{ test: /\.prt$/, use: 'raw-loader' },
{ test: /\.pkb$/, use: 'raw-loader' },
{ test: /\.psq$/, use: 'raw-loader' },
],
}
})
}