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Triggering Static Site Builds with Vercel ​

This recipe explains how to trigger a new build of your static website (hosted at Vercel) whenever a new article is published.

Author
Bryant Gillespie
Directus Version
9.21.2

Explanation ​

When using Directus as a Headless CMS, it is common to pair it with a front-end framework / static site generator like Next.js, Nuxt.js, SvelteKit, or other options.

Vercel and other similar platforms make it easy to host and deploy your site using static site generation (SSG) to render your site’s pages during build time, instead of waiting until a certain page is requested.

This recipe will show you how to trigger a new deployment or build for your site when new content is published or when existing content changes.

How-To Guide ​

Requirements

You’ll need to have already created a collection for your site content like articles or posts or pages with a field status that controls the published state. You'll also need to have a Vercel account and a site already hosted with them.

Create and Configure Your Flow ​

  1. Create a new Flow

    Give it a memorable name and short description like Trigger New Site Build.

  2. Complete the Trigger Setup

    The Trigger Setup tab of the Creating New Flow interface is show. The Event Hook type is selected. The Type field value is "Action(Non-Blocking)". In the Scope field, "items.create" and "items.update" are selected.

    a. Choose Event Hook for the trigger.

    b. For Type, Select Action (Non-Blocking).

    This will trigger this flow after the action (i.e. article updated) has already taken place.

    c. For Scope, choose the following:

    • items.create
    • items.update

    d. For Collections, choose any collections that should trigger this flow.

    In this case, we’ll use Articles and Articles Translations.

Add an Operation to Check Status Field ​

This step is optional but it is recommended to add a Condition operation to prevent unnecessary builds.

  1. Create a new Operation

    Within a Directus Flow, the Create Operation screen is shown. The Name of the Operation is "If Published". The Operation type is "Condition". The value of the Condition Rules field is a JSON object.

    a. Name your operation, i.e. Check Status, If Published, or similar.

    b. Add your Condition Rules

    json
    {
    	"$trigger": {
    		"payload": {
    			"status": {
    				"_eq": "published"
    			}
    		}
    	}
    }
    {
    	"$trigger": {
    		"payload": {
    			"status": {
    				"_eq": "published"
    			}
    		}
    	}
    }

Configure Vercel Deploy Hook ​

TIP

You can learn more about Vercel Deploy Hooks on their documentation.

https://vercel.com/docs/concepts/git/deploy-hooks

  1. Copy your Deploy Hook URL from Vercel

    a. Open your Vercel account

    b. Navigate to your site β†’ Settings β†’ Git β†’ Deploy Hooks

    c. Create a new deploy hook and copy the unique URL.

Add Webhook Operation to Your Flow ​

  1. Back inside your Directus Flow, create a new Operation.

    Within a Directus Flow, the Create Operation screen is shown. The Name of the Operation is "Deploy Site". The Operation type is "Webhook / Request URL". The Method selected is "POST". The URL field value is the an HTTP address for the build hook from the hosting platform.

    a. For the type of Operation, select Webhook / Request URL

    b. Change Method to POST

    c. Paste the Build Hook URL from Vercel into the URL field

    d. Save this Operation

    e. Save your Flow

Publish Your Flow ​

Great job! Now whenever you update an item in the articles collection and the status is equal to published , your hosting platform will automatically re-build your site.

Final Tips ​

This recipe covers a basic example of triggering a static site build.

It can be used in addition to other Flows recipes to build a robust content approval and publishing workflow for your sites and projects.

Tips

  • Make sure to test your flow several times to ensure everything is working as expected.
  • As you add other collections that are published on your static site or frontend, make sure you update this Flow to include those collections in your Trigger.

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