Upgrade to Gatsby v2

gatsby/pagination/create-categories-pages.js

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+'use strict';
+
+const _ = require('lodash');
+const path = require('path');
+const siteConfig = require('../../config.js');
+
+module.exports = async (graphql, actions) => {
+  const { createPage } = actions;
+
+  const result = await graphql(`
+    {
+      allMarkdownRemark(
+        filter: { frontmatter: { layout: { eq: "post" }, draft: { ne: true } } }
+      ) {
+        group(field: frontmatter___category) {
+          fieldValue
+          totalCount
+        }
+      }
+    }
+  `);
+
+  _.each(result.data.allMarkdownRemark.group, (category) => {
+    const numPages = Math.ceil(category.totalCount / siteConfig.postsPerPage);
+
+    for (let i = 0; i < numPages; i += 1) {
+      createPage({
+        path: i === 0 ? `/category/${_.kebabCase(category.fieldValue)}` : `/category/${_.kebabCase(category.fieldValue)}/page/${i}`,
+        component: path.resolve('./src/templates/category-template.js'),
+        context: {
+          page: i,
+          category: category.fieldValue,
+          limit: siteConfig.postsPerPage,
+          skip: i * siteConfig.postsPerPage,
+        }
+      });
+    }
+  });
+};

gatsby/pagination/create-posts-pages.js

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+'use strict';
+
+const path = require('path');
+const siteConfig = require('../../config.js');
+
+module.exports = async (graphql, actions) => {
+  const { createPage } = actions;
+
+  const result = await graphql(`
+    {
+      allMarkdownRemark(
+        filter: { frontmatter: { layout: { eq: "post" }, draft: { ne: true } } }
+      ) { totalCount }
+    }
+  `);
+
+  const numPages = Math.ceil(result.data.allMarkdownRemark.totalCount / siteConfig.postsPerPage);
+
+  for (let i = 0; i < numPages; i += 1) {
+    createPage({
+      path: i === 0 ? '/' : `/page/${i}`,
+      component: path.resolve('./src/templates/index-template.js'),
+      context: {
+        page: i,
+        limit: siteConfig.postsPerPage,
+        skip: i * siteConfig.postsPerPage,
+      }
+    });
+  }
+};

gatsby/pagination/create-tags-pages.js

@@ -0,0 +1,39 @@
+'use strict';
+
+const _ = require('lodash');
+const path = require('path');
+const siteConfig = require('../../config.js');
+
+module.exports = async (graphql, actions) => {
+  const { createPage } = actions;
+
+  const result = await graphql(`
+    {
+      allMarkdownRemark(
+        filter: { frontmatter: { layout: { eq: "post" }, draft: { ne: true } } }
+      ) {
+        group(field: frontmatter___tags) {
+          fieldValue
+          totalCount
+        }
+      }
+    }
+  `);
+
+  _.each(result.data.allMarkdownRemark.group, (tag) => {
+    const numPages = Math.ceil(tag.totalCount / siteConfig.postsPerPage);
+
+    for (let i = 0; i < numPages; i += 1) {
+      createPage({
+        path: i === 0 ? `/tag/${_.kebabCase(tag.fieldValue)}` : `/tag/${_.kebabCase(tag.fieldValue)}/page/${i}`,
+        component: path.resolve('./src/templates/tag-template.js'),
+        context: {
+          page: i,
+          tag: tag.fieldValue,
+          limit: siteConfig.postsPerPage,
+          skip: i * siteConfig.postsPerPage,
+        }
+      });
+    }
+  });
+};