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gatsby-node.js
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gatsby-node.js
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const amended = {};
exports.createPages = async ({ actions, graphql, reporter }) => {
const { createPage } = actions;
const template = require.resolve(`./src/page-templates/adr-page-template.js`);
const result = await graphql(`
{
allMarkdownRemark(sort: { order: DESC, fields: [frontmatter___date] }, limit: 1000) {
edges {
node {
fileAbsolutePath
frontmatter {
slug
amend {
relativePath
childMarkdownRemark {
frontmatter {
slug
title
}
}
}
}
}
}
}
}
`);
// Handle errors
if (result.errors) {
reporter.panicOnBuild(`Error while running GraphQL query.`);
return;
}
result.data.allMarkdownRemark.edges.forEach(({ node }) => {
const splittedPath = node.fileAbsolutePath.split("/");
const fileName = splittedPath[splittedPath.length - 1];
const amendedBy = amended[fileName];
createPage({
path: node.frontmatter.slug,
component: template,
context: {
// additional data can be passed via context
slug: node.frontmatter.slug,
amendedBy,
amend: node.frontmatter.amend,
},
});
});
};
exports.onCreateNode = ({ node }) => {
if (node.frontmatter && node.frontmatter.amend) {
const key = node.frontmatter.amend;
if (!amended[key]) {
amended[key] = [];
}
amended[key].push(node.frontmatter);
}
};
exports.createSchemaCustomization = ({ actions }) => {
const { createTypes } = actions;
createTypes(`
type MarkdownRemark implements Node @infer {
frontmatter: Frontmatter!
}
type Frontmatter @infer {
author: String!
amend: File @fileByRelativePath
pullRequest: String
}
`);
};