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gatsby-node.js
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gatsby-node.js
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const _ = require('lodash')
const Promise = require('bluebird')
const path = require('path')
const { createFilePath } = require('gatsby-source-filesystem')
exports.createPages = ({ graphql, actions }) => {
const { createPage } = actions
return new Promise((resolve, reject) => {
const blogIndex = path.resolve('./src/templates/blog-index.js')
resolve(
graphql(
`
{
allMarkdownRemark(
filter: {frontmatter: {type: {eq: "language"}}}
) {
edges {
node {
frontmatter {
language
}
}
}
}
}
`
).then(result => {
if (result.errors) {
console.log(result.errors)
reject(result.errors)
}
// Create blog posts pages.
const configs = result.data.allMarkdownRemark.edges;
_.each(configs, (config) => {
language = config.node.frontmatter.language
const path = language == 'en' ? '/' : `/${language}`
createPage({
path,
component: blogIndex,
context: {
language,
},
})
})
})
)
const blogPost = path.resolve('./src/templates/blog-post.js')
_.each(['en', 'es'], (language) => {
resolve(
graphql(
`
{
allMarkdownRemark(
sort: { fields: [frontmatter___date], order: DESC }, limit: 1000
filter: {frontmatter: {
language: { eq: "${language}" }
type: { eq: null }
}}
) {
edges {
node {
fields {
slug
}
frontmatter {
title
}
}
}
}
}
`
).then(result => {
if (result.errors) {
console.log(result.errors)
reject(result.errors)
}
// Create blog posts pages.
const posts = result.data.allMarkdownRemark.edges;
_.each(posts, (post, index) => {
const previous = index === posts.length - 1 ? null : posts[index + 1].node;
const next = index === 0 ? null : posts[index - 1].node;
createPage({
path: post.node.fields.slug,
component: blogPost,
context: {
slug: post.node.fields.slug,
language,
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,
})
}
}