title |
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Creating slugs for pages |
The logic for creating slugs from file names can get tricky, the gatsby-source-filesystem
plugin ships with a function for creating them.
npm install --save gatsby-source-filesystem
Add your new slugs directly onto the MarkdownRemark
nodes. Any data you add to nodes is available to query later with GraphQL.
To do so, you'll use a function passed to our API implementation called createNodeField
. This function allows you to create additional fields on nodes created by other plugins.
const { createFilePath } = require(`gatsby-source-filesystem`)
exports.onCreateNode = ({ node, getNode, actions }) => {
const { createNodeField } = actions
if (node.internal.type === `MarkdownRemark`) {
const slug = createFilePath({ node, getNode, basePath: `pages` })
createNodeField({
node,
name: `slug`,
value: slug,
})
}
}
Open refresh Graph_i_QL, then run this GraphQL query to see all your slugs:
{
allMarkdownRemark {
edges {
node {
fields {
slug
}
}
}
}
}