blog/gatsby-node.js

64 lines
1.4 KiB
JavaScript

const path = require('path');
const { createFilePath } = require('gatsby-source-filesystem');
exports.createPages = async ({ graphql, actions }) => {
const { createPage } = actions;
const blogPost = path.resolve('./src/templates/blog-post.js');
const result = await graphql(
`
{
allMarkdownRemark(
sort: { fields: [frontmatter___date], order: DESC }
limit: 1000
) {
edges {
node {
fields {
slug
}
frontmatter {
title
}
}
}
}
}
`
);
if (result.errors) {
throw result.errors;
}
// Create blog posts pages.
const posts = result.data.allMarkdownRemark.edges;
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: blogPost,
context: {
slug: post.node.fields.slug,
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,
});
}
};