Today I Learned

Netlify CMS relation widget with a list

As I was using Netlify CMS, I wanted to use a relation widget that would dynamically add content depending on the other collection title field.

It's really easy to do this, but I struggled a little bit with it because the documentation wasn't so explicit, and I could not find something useful on the internet.

So here's how you do it:

This is the collection that will have dynamic content, depending on how many call-to-actions you'll create.

  - name: 'call-to-action'
    label: 'Call to action'
    path: "{{slug}}"
    create: true
    folder: 'content/call-to-action'
      - {label: 'CTA Category', name: 'ctaCategory', widget: 'string'}
      - label: 'CTA Content'
        name: 'cta'
        widget: 'list'
        - {label: 'Title', name: 'title', widget: 'string' }
        - {label: 'Content', name: 'content', widget: 'string' }
        - {label: 'cover', name: 'cover', widget: 'image', media_folder: '/assets/images/covers/'}
        - label: 'Button'
          name: 'button'
          widget: 'object'
          - {label: 'url', name: 'url', widget: 'string'}
          - {label: 'title', name: 'title', widget: 'string'}

And now we have to link this collection to a field in the blog collection. The field in the blog collection looks like this :

- { label: 'Call to action category',
 name: 'ctaCategory',
 widget: 'relation', 
 collection: 'call-to-action', 
 search_fields: ["ctaCategory"], 
 value_field: "cta.*", 
 display_fields: ["ctaCategory"]}

The search will be done depending on what "ctaCategory" you select, and to get all the items in the list widget from the "call-to-action" collection, we need to specify in the value field that we want to get every item, and you do this with ".*".

That's all .

Visual Studio Code Snippets

VS Code offers the possibility to create personalized code snippets. These Code snippets can be configured for a specific user, globally, for a certain project or programming language.

For example, if a user wants to avoid the repetitive writing of the basic "console.log({})", after configuring the snippets, it will be enough to write a prefix like: "cl" or "log" and VSC will autocomplete the code snippet. The braces {} will also show the variable name before the result.

In order to achieve this, we can run the command "Preferences: Configure User Snippets" in VSC and a popup will appear showing the types of of snippets to configure.

If we wish to configure a snippet as in the 'console.log' example above, we need to choose to modify the "javascript.json" file with the following content:

    "Print to console": {
        "prefix": "cl",
        "body": [
        "description": "Log output to console"

As you can see, a certain snippet will have a prefix under it will be accessed, a body (the code that will be inserted) and the description of the snippet.

This is a powerful feature of VSC and can avoid repetitive code writing that can be quite tedious after a while.

More info about this feature of VSC can be found here: