static-cms/website/content/docs/add-to-your-site-bundling.mdx

---
group: Intro
title: Bundling
weight: 5
---

This tutorial guides you through the steps for adding Static CMS via a package manager to a site that's built with a common [static site generator](https://www.staticgen.com/), like Jekyll, Nest, Hugo, Hexo, or Gatsby. Alternatively, you can [start from a template](/docs/start-with-a-template) or dive right into [configuration options](/docs/configuration-options).

## Installation

You can also use Static CMS as an npm module. Wherever you import Static CMS, it automatically runs, taking over the current page. Make sure the script that imports it only runs on your CMS page. First install the package and save it to your project:

```bash
// npm
npm install @staticcms/core

// yarn
yarn add @staticcms/core
```

Then import it (assuming your project has tooling for imports):

```js
import CMS from '@staticcms/core';
// Initialize the CMS object
CMS.init();
// Now the registry is available via the CMS object.
CMS.registerPreviewTemplate('my-template', MyTemplate);
```

## Configuration

Configuration is different for every site, so we'll break it down into parts. Add all the code snippets in this section to your `admin/config.yml` file.

### Backend

We're using [Netlify](https://www.netlify.com) for our hosting and authentication in this tutorial, so backend configuration is fairly straightforward.

For GitHub and GitLab repositories, you can start your Static CMS `config.yml` file with these lines:

```yaml
backend:
  title: git-gateway
  branch: master # Branch to update (optional; defaults to master)
```

_(For Bitbucket repositories, use the [Bitbucket backend](/docs/bitbucket-backend) instructions instead.)_

The configuration above specifies your backend protocol and your publication branch. Git Gateway is an open source API that acts as a proxy between authenticated users of your site and your site repo. (We'll get to the details of that in the [Authentication section](#authentication) below.) If you leave out the `branch` declaration, it defaults to `master`.

### Media and Public Folders

Static CMS allows users to upload images directly within the editor. For this to work, the CMS needs to know where to save them. If you already have an `images` folder in your project, you could use its path, possibly creating an `uploads` sub-folder, for example:

```yaml
# This line should *not* be indented
media_folder: 'images/uploads' # Media files will be stored in the repo under images/uploads
```

If you're creating a new folder for uploaded media, you'll need to know where your static site generator expects static files. You can refer to the paths outlined above in [App File Structure](#app-file-structure), and put your media folder in the same location where you put the `admin` folder.

Note that the`media_folder` file path is relative to the project root, so the example above would work for Jekyll, GitBook, or any other generator that stores static files at the project root. However, it would not work for Hugo, Hexo, Middleman or others that store static files in a subfolder. Here's an example that could work for a Hugo site:

```yaml
# These lines should *not* be indented
media_folder: 'static/images/uploads' # Media files will be stored in the repo under static/images/uploads
public_folder: '/images/uploads' # The src attribute for uploaded media will begin with /images/uploads
```

The configuration above adds a new setting, `public_folder`. While `media_folder` specifies where uploaded files are saved in the repo, `public_folder` indicates where they are found in the published site. Image `src` attributes use this path, which is relative to the file where it's called. For this reason, we usually start the path at the site root, using the opening `/`.

_If `public_folder` is not set, Static CMS defaults to the same value as `media_folder`, adding an opening `/` if one is not included._

### Collections

Collections define the structure for the different content types on your static site. Since every site is different, the `collections` settings differ greatly from one site to the next.

Let's say your site has a blog, with the posts stored in `_posts/blog`, and files saved in a date-title format, like `1999-12-31-lets-party.md`. Each post begins with settings in yaml-formatted front matter, like so:

```yaml
---
layout: blog
title: "Let's Party"
date: 1999-12-31 11:59:59 -0800
thumbnail: '/images/prince.jpg'
rating: 5
---
This is the post body, where I write about our last chance to party before the Y2K bug destroys us all.
```

Given this example, our `collections` settings would look like this in your Static CMS `config.yml` file:

```yaml
collections:
  - title: 'blog' # Used in routes, e.g., /admin/collections/blog
    label: 'Blog' # Used in the UI
    folder: '_posts/blog' # The path to the folder where the documents are stored
    create: true # Allow users to create new documents in this collection
    slug: '{{year}}-{{month}}-{{day}}-{{slug}}' # Filename template, e.g., YYYY-MM-DD-title.md
    fields: # The fields for each document, usually in front matter
      - { label: 'Layout', title: 'layout', widget: 'hidden', default: 'blog' }
      - { label: 'Title', title: 'title', widget: 'string' }
      - { label: 'Publish Date', title: 'date', widget: 'datetime' }
      - { label: 'Featured Image', title: 'thumbnail', widget: 'image' }
      - { label: 'Rating (scale of 1-5)', title: 'rating', widget: 'number' }
      - { label: 'Body', title: 'body', widget: 'markdown' }
```

Let's break that down:

|Field|Description|
| ---- | --------------------- |
|name|Post type identifier, used in routes. Must be unique.|
|label|What the admin UI calls the post type.|
|folder|Where files of this type are stored, relative to the repo root.|
|create|Set to `true` to allow users to create new files in this collection.|
|slug|Template for filenames. `{{ year }}`, `{{ month }}`, and `{{ day }}` pulls from the post's `date` field or save date. `{{ slug }}` is a url-safe version of the post's `title`. Default is simply `{{ slug }}`.|
|fields|Fields listed here are shown as fields in the content editor, then saved as front matter at the beginning of the document (except for `body`, which follows the front matter).|

As described above, the `widget` property specifies a built-in or custom UI widget for a given field. When a content editor enters a value into a widget, that value is saved in the document front matter as the value for the `name` specified for that field. A full listing of available widgets can be found in the [Widgets doc](/docs/widgets).

Based on this example, you can go through the post types in your site and add the appropriate settings to your Static CMS `config.yml` file. Each post type should be listed as a separate node under the `collections` field. See the [Collections reference doc](/docs/configuration-options/#collections) for more configuration options.

### Filter

The entries for any collection can be filtered based on the value of a single field. The example collection below only shows post entries with the value `en` in the `language` field.

```yaml
collections:
  - title: 'posts'
    label: 'Post'
    folder: '_posts'
    filter:
      field: language
      value: en
    fields:
      - { label: 'Language', title: 'language' }
```

## Authentication

Now that you have your Static CMS files in place and configured, all that's left is to enable authentication. We're using the [Netlify](https://www.netlify.com/) platform here because it's one of the quickest ways to get started, but you can learn about other authentication options in the [Backends](/docs/backends-overview) doc.

### Setup on Netlify

Netlify offers a built-in authentication service called Identity. In order to use it, connect your site repo with Netlify.

### Enable Identity and Git Gateway

Netlify's Identity and Git Gateway services allow you to manage CMS admin users for your site without requiring them to have an account with your Git host or commit access on your repo. From your site dashboard on Netlify:

1. Go to **Settings > Identity**, and select **Enable Identity service**.
2. Under **Registration preferences**, select **Open** or **Invite only**. In most cases, you want only invited users to access your CMS, but if you're just experimenting, you can leave it open for convenience.
3. If you'd like to allow one-click login with services like Google and GitHub, check the boxes next to the services you'd like to use, under **External providers**.
4. Scroll down to **Services > Git Gateway**, and click **Enable Git Gateway**. This authenticates with your Git host and generates an API access token. In this case, we're leaving the **Roles** field blank, which means any logged in user may access the CMS. For information on changing this, check the [Netlify Identity documentation](https://www.netlify.com/docs/identity/).

### Add the Netlify Identity Widget

With the backend set to handle authentication, now you need a frontend interface to connect to it. The open source Netlify Identity Widget is a drop-in widget made for just this purpose. To include the widget in your site, add the following script tag in two places:

```html
<script src="https://identity.netlify.com/v1/netlify-identity-widget.js"></script>
```

Add this to the `<head>` of your CMS index page at `/admin/index.html`, as well as the `<head>` of your site's main index page. Depending on how your site generator is set up, this may mean you need to add it to the default template, or to a "partial" or "include" template. If you can find where the site stylesheet is linked, that's probably the right place. Alternatively, you can include the script in your site using Netlify's [Script Injection](https://www.netlify.com/docs/inject-analytics-snippets/) feature.

When a user logs in with the Netlify Identity widget, an access token directs to the site homepage. In order to complete the login and get back to the CMS, redirect the user back to the `/admin/` path. To do this, add the following script before the closing `body` tag of your site's main index page:

```html
<script>
  if (window.netlifyIdentity) {
    window.netlifyIdentity.on('init', user => {
      if (!user) {
        window.netlifyIdentity.on('login', () => {
          document.location.href = '/admin/';
        });
      }
    });
  }
</script>
```

Note: This example script requires modern JavaScript and does not work on IE11. For legacy browser support, use function expressions (`function () {}`) in place of the arrow functions (`() => {}`), or use a transpiler such as [Babel](https://babeljs.io/).

## Accessing the CMS

Your site CMS is now fully configured and ready for login!

If you set your registration preference to "Invite only," invite yourself (and anyone else you choose) as a site user. To do this, select the **Identity** tab from your site dashboard, and then select the **Invite users** button. Invited users receive an email invitation with a confirmation link. Clicking the link will take you to your site with a login prompt.

If you left your site registration open, or for return visits after confirming an email invitation, access your site's CMS at `yoursite.com/admin/`.

**Note:** No matter where you access Static CMS — whether running locally, in a staging environment, or in your published site — it always fetches and commits files in your hosted repository (for example, on GitHub), on the branch you configured in your Static CMS config.yml file. This means that content fetched in the admin UI matches the content in the repository, which may be different from your locally running site. It also means that content saved using the admin UI saves directly to the hosted repository, even if you're running the UI locally or in staging.

Happy posting!