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gatsby-node.js
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gatsby-node.js
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/**
* Implement Gatsby's Node APIs in this file.
*
* See: https://www.gatsbyjs.com/docs/node-apis/
*/
// You can delete this file if you're not using it
const path = require("path")
exports.createPages = async ({ graphql, actions, reporter }) => {
const { createPage } = actions
const blogQuery = await graphql(`
{
allMdx(
sort: { fields: [frontmatter___date], order: DESC }
filter: { fileAbsolutePath: { regex: "/(blogs)/" } }
) {
edges {
node {
frontmatter {
language
}
slug
}
}
}
}
`)
if (blogQuery.errors) {
reporter.panicOnBuild("Error while running blog GraphQL query.")
return
}
const blogTemplate = path.resolve("./src/templates/blog-page.jsx")
blogQuery.data.allMdx.edges.forEach(({ node }) => {
const language = node.frontmatter.language
if (language === "en")
createPage({
path: `blogs/${node.slug}`,
component: blogTemplate,
context: {
slug: node.slug,
language: node.frontmatter.language,
},
})
if (language === "jp")
createPage({
path: `blogs/${node.slug}`,
component: blogTemplate,
context: {
slug: node.slug,
language: node.frontmatter.language,
},
})
})
const blogsPerPage = 10
const blogsList = await graphql(`
query BlogPosts {
allMdx(
sort: { fields: [frontmatter___date], order: DESC }
filter: {
fileAbsolutePath: { regex: "/(blogs)/" }
frontmatter: { language: { eq: "en" } }
}
) {
edges {
node {
id
slug
frontmatter {
title
excerpt
date
hashtags
thumbnail {
childImageSharp {
gatsbyImageData
}
}
}
}
}
}
}
`)
if (blogsList.errors) {
reporter.panicOnBuild("Error while running blog list GraphQL query.")
return
}
const blogs = blogsList.data.allMdx.edges
const numPages = Math.ceil(blogs.length / blogsPerPage)
Array.from({ length: numPages }).forEach((_, i) => {
createPage({
path: i === 0 ? `en/` : `en/pages/${i + 1}`,
component: path.resolve("./src/templates/index.jsx"),
context: {
limit: blogsPerPage,
skip: i * blogsPerPage,
numPages: numPages,
currentPage: i + 1,
},
})
})
const jpBlogsList = await graphql(`
query BlogPosts {
allMdx(
sort: { fields: [frontmatter___date], order: DESC }
filter: {
frontmatter: { language: { eq: "jp" } }
fileAbsolutePath: { regex: "/(blogs)/" }
}
) {
edges {
node {
id
slug
frontmatter {
title
excerpt
date
hashtags
thumbnail {
childImageSharp {
gatsbyImageData
}
}
}
}
}
}
}
`)
if (jpBlogsList.errors) {
reporter.panicOnBuild("Error while running blog list GraphQL query.")
return
}
const jpBlogs = jpBlogsList.data.allMdx.edges
const jpNumPages = Math.ceil(jpBlogs.length / blogsPerPage)
Array.from({ length: jpNumPages }).forEach((_, i) => {
createPage({
path: i === 0 ? `/` : `/pages/${i + 1}`,
component: path.resolve("./src/templates/index.jsx"),
context: {
limit: blogsPerPage,
skip: i * blogsPerPage,
numPages: jpNumPages,
currentPage: i + 1,
language: "jp",
},
})
})
}