implemented createPages API

Author: arsmth

gatsby-node.js

@@ -0,0 +1,38 @@
+const path = require('path');
+
+exports.createPages = ({ boundActionCreators, graphql }) => {
+  const { createPage } = boundActionCreators;
+
+  const blogPostTemplate = path.resolve(`src/templates/blog-post.js`);
+
+  return graphql(`{
+    allMarkdownRemark(
+      sort: { order: DESC, fields: [frontmatter___date] }
+      limit: 1000
+    ) {
+      edges {
+        node {
+          excerpt(pruneLength: 250)
+          html
+          id
+          frontmatter {
+            path
+            date
+            title
+          }
+        }
+      }
+    }
+  }`).then(result => {
+      if (result.errors) {
+        return Promise.reject(result.errors);
+      }
+      result.data.allMarkdownRemark.edges.forEach(({ node }) => {
+      createPage({
+        path: node.frontmatter.path,
+        component: blogPostTemplate,
+        context: {} // additional data can be passed via context
+      });
+    });
+  });
+}