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gatsby-node.js
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gatsby-node.js
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const path = require('path');
const { createFilePath } = require('gatsby-source-filesystem');
const { fmImagesToRelative } = require('gatsby-remark-relative-images');
exports.onCreateNode = function({ node, getNode, actions }) {
fmImagesToRelative(node);
const { createNodeField } = actions;
if (node.internal.type === 'MarkdownRemark') {
const slug = createFilePath({ node, getNode });
createNodeField({
node,
name: 'slug',
value: slug
});
}
};
exports.createPages = async function({ graphql, actions }) {
const { createPage } = actions;
const result = await graphql(`
query {
allMarkdownRemark {
edges {
node {
frontmatter {
contentKey
}
fields {
slug
}
}
}
}
}
`);
const posts = result.data.allMarkdownRemark.edges
.filter(edge => edge.node.frontmatter.contentKey === 'blog');
posts
.forEach(({ node }) => {
createPage({
path: node.fields.slug,
component: path
.resolve('src/templates/blog.js'),
context: {
slug: node.fields.slug
}
});
});
const pageSize = 5;
const pageCount = Math.ceil(posts.length / pageSize);
const templatePath = path.resolve('src/templates/blog-list.js');
for (let i = 0; i < pageCount; i++) {
let path = '/blog';
if (i > 0) {
path += `/${i + 1}`;
};
createPage({
path,
component: templatePath,
context: {
limit: pageSize,
skip: i * pageSize,
pageCount,
currentPage: i + 1
}
});
}
};