Adding TinaCMS to my Gatsby Starter Blog

Originally posted: 2020-02-01

How I added TinaCMS to my Gatsby starter blog for faster creation of blog posts.

TLDR

I did manage to add TinaCMS to my Gatsby site, and I couldn't be happier! But it took me longer than I thought, because I'm a rookie.

All I can say is when in doubt, reverse engineer something that works!

How to add TinaCMS to your Gatsby site

Make your site editable in five minutes.

That's the claim on the TinaCMS homepage.

Well, I put it to the test, and, as it turns out it took me way longer, but next time it probably will take 5 minutes.

These are their four steps, but they only come with three bits of code:

Install and configure Tina plugins Wrap and export your templates with Tina components specific to your data Customize and define the content fields by passing an options argument Open the sidebar 🤩, edit your site and watch the content updating in realtime

And here's the complete code they stick beside those instructions:

yarn add gatsby-plugin-tinacms

module.exports = {
  // ...
  plugins: [
    'gatsby-plugin-tinacms',
    // ...
  ],
};

export WithTina( Component );

Step 1: Install the TinaCMS plugin for Gatsby using your package manager

If you are using a Gatsby starter, then you're either using NPM or Yarn to manage your packages. Just take a look in your site's root directory and look for a package-lock.json file. If you see that, then you're using NPM, otherwise, you can use Yarn!

So I'm following the instructions on tinacms.org, and step one is:

yarn add gatsby-plugin-tinacms

(I'm using NPM, not Yarn, so I'll use npm add gatsby-plugin-tinacms, which is an alias for npm install gatsby-plugin-tinacms).

Step 2: Import the TinaCMS plugin into your gatsby-config.js file

The next code block looks like this:

module.exports = {
  // ...
  plugins: [
    'gatsby-plugin-tinacms',
    // ...
  ],
};

But, really, what does that mean anyways?

I took a wild stab based on a vague memory I have about adding a plugin last week, and opened up my gatsby-config.js file. Wouldn't you know it, but after some imports, that file begins with:

module.exports = {
  pathPrefix: config.pathPrefix,
  siteMetadata: {
    title: config.siteTitle,
  },
  plugins: [
    'gatsby-plugin-react-helmet',
    {
      resolve: `gatsby-plugin-manifest`,
      options: {
          ...

That looks like the file I want!

So, at the top of my plugins array, I added the TinaCMS plugin (which I already installed using NPM).

Now it looks like this:

  plugins: [
    'gatsby-plugin-tinacms',
    'gatsby-plugin-react-helmet',
    {
        ...

I think so far I've completed the first prose instruction:

Install and configure Tina plugins

So, on to the second prose instruction:

Wrap and export your templates with Tina components specific to your data

Step 3: Wrap your components in a TinaCMS function

Alright, so the TinaCMS site just has this third bit of code:

export WithTina( Component );

Hm.

Well, I'll go look for a template that is also a React component.

This sounds like /src-folder territory.

In my Gatsby starter blog folder structure, I've got both a /templates folder and a /components folder. Maybe I can use both. I'm guessing if I wrap a component in the WithTina() function, it will allow me to edit the component, and if I wrap a template, it will let me edit the template.

In both cases, I'm guessing I'll need to input some parameters, you know, to tell the WithTina() function what exactly it's supposed to be editing, but I'll cross that bridge when I come to it.

Since I've added new plugins since I've started, I'm going to shut down my gatsby develop process and restart it.

There is only one template in my /templates folder, blog-post.js, so I opened that up.

Near the bottom, I see this line of code:

export default BlogPostTemplate

So I swapped it for:

//export default BlogPostTemplate

export default WithTina( BlogPostTemplate );

And then I fired up gatsby develop in my terminal.

Nothing. 😓

Oh yeah!—It would probably help if I saved my blog-post.js file! 😅

But then I got an error

 ERROR <span class='tag'>98123</span>  WEBPACK

Generating development JavaScript bundle failed


/Users/ryderwishart/Documents/Projects/Work/Marketing/Websites/gatsby-sites/gatsby-starter-blog/src/templates/blog-post.js
  85:16  error  'WithTina' is not defined  no-undef

✖ 1 problem (1 error, 0 warnings)


File: src/templates/blog-post.js

failed Re-building development bundle - 0.799s

Of course, how could blog-post.js know what WithTina() means unless I import it first?

At the top of blog-post.js I added this line:

import WithTina from "gatsby-plugin-tinacms"

Well, I'm still getting errors! I tried destructuring the import, but that didn't help.

It's time to actually read the in-depth instructions. This is taking more than 5 minutes, but I bear all the responsibility for that.

Starting over

For adding TinaCMS to a site, our Forestry.io friends (the creators of TinaCMS) offer this guide.

Step 1 of manual setup

The first step is npm install --save gatsby-plugin-tinacms styled-components.

I already installed gatsby-plugin-tinacms, but maybe I didn't --save it? Hm.

Step 2 of manual setup

Then we need to modify our gatsby-config.js file, but I already did that too. I noticed there is a comment in the middle of this block that makes me think I should match my call for gatsby-plugin-tinacms to this one:

module.exports = {
  // ...
  plugins: [
    {
      resolve: 'gatsby-plugin-tinacms',
      options: {
        plugins: [
          // We'll add some Tinacms plugins in the next step.
        ],
      },
    },
    // ...
  ],
}

In fact, I'm starting to think I may have just imported the plugin incorrectly.

I restarted my local version using ctrl+c and gatsby develop.

Well, it still doesn't seem to be working!

I am getting a type error: Unhandled Rejection (TypeError): e is undefined

That's it, time to start over again, and head to a working TinaCMS demo.

Step 1 of reverse engineering a working demo

Looking at this working demo's config file, I am installing these plugins:

npm install --save gatsby-tinacms-remark gatsby-tinacms-git gatsby-tinacms-json

I'm also going to add the plugins to my config file using this code:

  plugins: [
    {
      resolve: "gatsby-plugin-tinacms",
      options: {
        plugins: ["gatsby-tinacms-git", "gatsby-tinacms-remark", "gatsby-tinacms-json",],
        sidebar: {
          hidden: process.env.NODE_ENV === "production",
          position: "displace"
        },
      },
    },

Wow, WOW.

It worked.

I can see the pencil icon.

Perhaps it was the double-quotation marks "? Perhaps it was the sidebar propery? Perhaps it was the lack of line breaks between subsequent plugins??

I just don't know. But if you were in my shoes, I hope this helped you.

All I know is that I'm committing this right now before I break something. 😎

Conclusion

When in doubt, reverse engineer something that works.

That's what I did to add Tina to my blog, and I hope you found this helpful.

If you read this far, it's because you're a learner like me. If it was helpful, please share it!