Files
30-seconds-of-code/gatsby-node.js
2019-08-23 10:32:39 +03:00

94 lines
2.2 KiB
JavaScript

const path = require(`path`);
const { createFilePath } = require(`gatsby-source-filesystem`);
const toKebabCase = str =>
str &&
str
.match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
.map(x => x.toLowerCase())
.join('-');
exports.createPages = ({ graphql, actions }) => {
const { createPage } = actions;
const snippetPage = path.resolve(`./src/docs/templates/SnippetPage.js`);
const tagPage = path.resolve(`./src/docs/templates/TagPage.js`);
return graphql(
`
{
allMarkdownRemark(
sort: { fields: [frontmatter___title], order: ASC }
limit: 1000
) {
edges {
node {
fields {
slug
}
frontmatter {
tags
}
fileAbsolutePath
}
}
}
}
`,
).then(result => {
if (result.errors) {
throw result.errors;
}
// Create individual snippet pages.
const snippets = result.data.allMarkdownRemark.edges;
snippets.forEach((post, index) => {
if (post.node.fileAbsolutePath.indexOf('README') !== -1)
return;
createPage({
path: `/snippet${post.node.fields.slug}`,
component: snippetPage,
context: {
slug: post.node.fields.slug,
},
});
});
// Create tag pages.
const tags = snippets.reduce((acc, post) => {
if (!post.node.frontmatter || !post.node.frontmatter.tags) return acc;
const primaryTag = post.node.frontmatter.tags.split(',')[0];
if (!acc.includes(primaryTag)) acc.push(primaryTag);
return acc;
}, []);
tags.forEach(tag => {
const tagPath = `/tag/${toKebabCase(tag)}/`;
const tagRegex = `/^\\s*${tag}/`;
createPage({
path: tagPath,
component: tagPage,
context: {
tag,
tagRegex,
},
});
});
return null;
});
};
exports.onCreateNode = ({ node, actions, getNode }) => {
const { createNodeField } = actions;
if (node.internal.type === `MarkdownRemark`) {
const value = createFilePath({ node, getNode });
createNodeField({
name: `slug`,
node,
value,
});
}
};