Ghost & Astro

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Ghost is an open-source, headless content management system built on Node.js.

Integrating with Astro

In this section, we’ll use the Ghost content API to bring your data into your Astro project.

Prerequisites

To get started you will need to have the following:

An Astro project - If you don’t have an Astro project yet, our Installation guide will get you up and running in no time.
A Ghost site - It is assumed that you have a site set up with Ghost. If you don’t you can set one up on a local environment.
Content API Key - You can make an integration under your site’s Settings > Integrations. From there you can find your Content API key

Setting up credentials

To add your site’s credentials to Astro, create an .env file in the root of your project with the following variable:

CONTENT_API_KEY=YOUR_API_KEY

Now, you should be able to use this environment variable in your project.

If you would like to have IntelliSense for your environment variable, you can create a env.d.ts file in the src/ directory and configure ImportMetaEnv like this:

interface ImportMetaEnv {
  readonly CONTENT_API_KEY: string;
}

Your root directory should now include these new files:

ディレクトリsrc/
- env.d.ts
.env
astro.config.mjs
package.json

Installing dependencies

To connect with Ghost, install the official content API wrapper @tryghost/content-api using the command below for your preferred package manager, and optionally, a helpful package containing type definitions if you are using TypeScript:

npm install @tryghost/content-api
npm install --save @types/tryghost__content-api

pnpm add @tryghost/content-api
pnpm add --save-dev @types/tryghost__content-api

yarn add @tryghost/content-api
yarn add --dev @types/tryghost__content-api

Making a blog with Astro and Ghost

With the setup above, you are now able to create a blog that uses Ghost as the CMS.

Prerequisites

A Ghost blog
An Astro project integrated with the Ghost content API - See integrating with Astro for more details on how to set up an Astro project with Ghost.

This example will create an index page that lists posts with links to dynamically-generated individual post pages.

Fetching Data

You can fetch your site’s data with the Ghost content API package.

First, create a ghost.ts file under a lib directory.

ディレクトリsrc/
- ディレクトリlib/
  - ghost.ts
- ディレクトリpages/
  - index.astro
astro.config.mjs
package.json

Initialize an API instance with the Ghost API using the API key from the Ghost dashboard’s Integrations page.

import GhostContentAPI from '@tryghost/content-api';

// Create API instance with site credentials
export const ghostClient = new GhostContentAPI({
    url: 'http://127.0.0.1:2368', // This is the default URL if your site is running on a local environment
    key: import.meta.env.CONTENT_API_KEY,
    version: 'v5.0',
});

Displaying a list of posts

The page src/pages/index.astro will display a list of posts, each with a description and link to its own page.

ディレクトリsrc/
- …
ディレクトリlib/
- ghost.ts
ディレクトリpages/
- index.astro
astro.config.mjs
package.json

Import ghostClient() in the Astro frontmatter to use the posts.browse() method to access blog posts from Ghost. Set limit: all to retrieve all posts.

---
import { ghostClient } from '../lib/ghost';
const posts = await ghostClient.posts
    .browse({
        limit: 'all',
    })
    .catch((err) => {
        console.error(err);
    });
---

Fetching via the content API returns an array of objects containing the properties for each post such as:

title - the title of the post
html - the HTML rendering of the content of the post
feature_image - the source URL of the featured image of the post
slug - the slug of the post

Use the posts array returned from the fetch to display a list of blog posts on the page.

---
import { ghostClient } from '../lib/ghost';
const posts = await ghostClient.posts
    .browse({
        limit: 'all',
    })
    .catch((err) => {
        console.error(err);
    });
---

<html lang="en">
    <head>
        <title>Astro + Ghost 👻</title>
    </head>
    <body>

        {
            posts.map((post) => (
                <a href={`/post/${post.slug}`}>
                    <h1> {post.title} </h1>
                </a>
            ))
        }
    </body>
</html>

Generating pages

The page src/pages/post/[slug].astro dynamically generates a page for each post.

ディレクトリsrc/
- …
ディレクトリlib/
- ghost.ts
ディレクトリpages/
- index.astro
- ディレクトリpost/
  - [slug].astro
astro.config.mjs
package.json

Import ghostClient() to access blog posts using posts.browse() and return a post as props to each of your dynamic routes.

---
import { ghostClient } from '../../lib/ghost';

export async function getStaticPaths() {
    const posts = await ghostClient.posts
        .browse({
            limit: 'all',
        })
        .catch((err) => {
            console.error(err);
        });

    return posts.map((post) => {
        return {
            params: {
                slug: post.slug,
            },
            props: {
                post: post,
            },
        };
    });
}

const { post } = Astro.props;
---

Create the template for each page using the properties of each post object.

---
import { ghostClient } from '../../lib/ghost';
export async function getStaticPaths() {
    const posts = await ghostClient.posts
        .browse({
            limit: 'all',
        })
        .catch((err) => {
            console.error(err);
        });
    return posts.map((post) => {
        return {
            params: {
                slug: post.slug,
            },
            props: {
                post: post,
            },
        };
    });
}
const { post } = Astro.props;
---
<!DOCTYPE html>
<html lang="en">
    <head>
        <title>{post.title}</title>
    </head>
    <body>
        <img src={post.feature_image} alt={post.title} />

        <h1>{post.title}</h1>
        <p>{post.reading_time} min read</p>

        <Fragment set:html={post.html} />
    </body>
</html>