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gatsby-node.js
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gatsby-node.js
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const path = require(`path`)
const _ = require(`lodash`)
const { createFilePath } = require(`gatsby-source-filesystem`)
exports.onCreateNode = ({ node, actions, getNode }) => {
const { createNodeField } = actions
if (node.internal.type === `MarkdownRemark`) {
const value = createFilePath({ node, getNode })
createNodeField({
name: `slug`,
node,
value,
})
}
}
exports.createPages = async ({ actions, graphql, reporter }) => {
const { createPage } = actions
const result = await graphql(`
{
postsRemark: allMarkdownRemark(
sort: { order: DESC, fields: [frontmatter___date] }
limit: 2000
) {
edges {
node {
frontmatter {
path
}
}
}
}
tagsGroup: allMarkdownRemark(limit: 2000) {
group(field: frontmatter___tags) {
fieldValue
}
}
}
`)
// handle errors
if (result.errors) {
reporter.panicOnBuild(`Error while running GraphQL query.`)
return
}
result.data.postsRemark.edges.forEach(({ node }) => {
createPage({
path: node.frontmatter.path,
component: path.resolve(`src/templates/post.js`),
})
})
result.data.tagsGroup.group.forEach( tag => {
createPage({
path: `/tags/${_.kebabCase(tag.fieldValue)}/`,
component: path.resolve(`src/templates/tags.js`),
context: {
tag: tag.fieldValue
}
})
})
}