What is Netlify CMS?

It's an open-source single page application that's written in React that allows you to edit content and data in your Git repo. It interacts with your static site repo API, in our case, Gatsby so that every time you make a change, it gets committed.

Great! So how do I get started?

First, let's open up a new terminal window and create a new site. I will be using the gatsby-theme-blog but feel free to use your own.

shell:

gatsby new YOUR PROJECT NAME https://github.com/gatsbyjs/gatsby-starter-blog-theme


Now cd into your project's directory and install the Gatsby plugin for Netlify CMS and the netlify-cms-app

shell:
npm install --save netlify-cms-app gatsby-plugin-netlify-cms

Now, let's open this up in your favorite text editor.

If you're using the same starter as I am in this tutorial, then your project should be structured like this:

YOUR PROJECT'S NAME
├── content
│   ├── assets  
│   │   └── avatar.png
│   └── posts
│       ├── hello-world.mdx
│       └── my-second-post.mdx
├── src
│   └── gatsby-theme-blog
│       ├── components
│       │   └── bio-content.js
│       └── gatsby-plugin-theme-ui
│           └── colors.js
├── gatsby-config.js
└── package.json

Since we installed a Gatsby plugin, we now need to define it in gatsby-config.js. If that file doesn't exist, then create that file.

gatsby-config.js:

module.exports = {
    plugins: [`gatsby-plugin-netlify-cms`],
}

Now, we're going to want to create a folder called static at the root of our project and then inside of that static folder, create another folder called admin. Finally, create a file called config.yml. Your project should look like this:

YOUR PROJECT'S NAME
├── content
│   ├── assets  
│   │   └── avatar.png
│   └── posts
│       ├── hello-world.mdx
│       └── my-second-post.mdx
├── src
│   └── gatsby-theme-blog
│       ├── components
│       │   └── bio-content.js
│       └── gatsby-plugin-theme-ui
│           └── colors.js
├── static <-------------- HERE
│   └──  admin
│       │   └──  config.yml
├── gatsby-config.js
└── package.json

If you haven't done so, put this project on Github and push your latest commits

Okay, now in your static/admin/config.yml file paste in the following:

backend:
  name: github
  repo: your Github username/ your repo name

media_folder: static/assets
public_folder: /assets

collections:
  - name: blog
    label: Blog
    folder: blog
    create: true
    fields:
      - { name: path, label: Path }
      - { name: date, label: Date, widget: datetime }
      - { name: title, label: Title }
      - { name: body, label: Body, widget: markdown }

Prepare your project for production and head on over to Netlify and create a new site from Git.

Once your site finishes building, follow the instructions from this:
https://docs.netlify.com/visitor-access/oauth-provider-tokens/#setup-and-settings

Make sure to get your key and secret from Github

Head back to Netlify

In your site's setting, scroll down until you see access control and then OAuth click on install provider and choose Github. Enter in your KEY and SECRET

Open your site from Netlify

Type in YOUR SITE URL/admin/

Now you should see this screen:

Click on login with Github and you should now see this screen:

But wait! There's more -- Important

In order for Gatsby to recognize your newly created files in the correct folder, you're going to need to download this Gatsby plugin:

npm install --save gatsby-source-filesystem

and add this to your gatsby-config.js file:

plugins: [
  {
    resolve: `gatsby-source-filesystem`,
    options: {
      name: `markdown-pages`,
      path: `${__dirname}/content/posts/blog`, <-- your path
    },
  },
]

Make sure to commit your changes!

Back in the CMS:

Now, create a new blog post and click publish. When doing this, it should automatically make a commit to your repo and create a new blog post! Once your site finishes building in Netlify, you should see your new blog post!

Cover Image:
taken from here

Yay! 🎉