/
gatsby-node.js
80 lines (69 loc) · 1.75 KB
/
gatsby-node.js
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const path = require(`path`)
const { createFilePath } = require(`gatsby-source-filesystem`)
const { redirectTable } = require('./gatsby-meta-config')
exports.createPages = ({ graphql, actions }) => {
const { createPage } = actions
const blogPostTemplate = path.resolve(`./src/templates/blog-post.js`)
return graphql(
`
{
allMarkdownRemark(
sort: { fields: [frontmatter___date], order: DESC }
limit: 1000
) {
edges {
node {
fields {
slug
}
frontmatter {
title
category
}
}
}
}
}
`
).then(result => {
if (result.errors) {
throw result.errors
}
// Create blog posts pages.
const posts = result.data.allMarkdownRemark.edges.filter(
({ node }) => !!node.frontmatter.category
)
posts.forEach((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: blogPostTemplate,
context: {
slug: post.node.fields.slug,
previous,
next,
},
})
})
})
}
exports.onCreateNode = ({ node, actions, getNode }) => {
const { createNodeField, createRedirect } = actions
redirectTable.forEach(({ fromPath, toPath }) =>
createRedirect({
fromPath,
toPath,
isPermanent: true,
redirectInBrowser: true,
})
)
if (node.internal.type === `MarkdownRemark`) {
const value = createFilePath({ node, getNode })
createNodeField({
name: `slug`,
node,
value,
})
}
}