Hello! I am trying to trigger a deployment from a webhook event. I want to pass a parameter to my flow from the body of my webhook event. For example I have a Webhook template like this:

{
  "event": "{{body.event_name}}",
  "resource": {
    "prefect.resource.id": "data.type.{{ body.data_type }}",
    "prefect.resource.name": "{{ body.friendly_name }}",
    "data_url": "{{ body.url }}"
  }
}

When I send a post to my webhook endpoint, I receive the event and it contains a body like this:

"body": "{\"event_name\":\"event_add\",\"data_type\":\"event\",\"friendly_name\":\"add_new_event\",\"url\":<https://example.com/123>}"

Now when I create a new automation, I don't know how to fill in the form in the Prefect dashboard. Should the resource be the name of my webhook? For the

event_url

parameter, how can I use the value of

url

in my webhook event body?

Hey Ben! To get a head start on filling out the form for the automation trigger, I'd suggest going to the events page in your UI and finding the event that is produced as a result of hitting the webhook. If you click on the link present in the name of the event, it will take you to a new page with the formatted event and the raw json. There should be a little hamburger menu in the upper righthand corner. If you click that menu, there's an option for "Automate". Click that, and it'll take you to page where the trigger field for an automation is filled out on your behalf.

ok great, so in my case, it would be like this?

{{ event.payload.body.url }}

To the right of your parameter on the "Action" form, there's another small hamburger menu. I believe you'll want to ensure "use Jinja input" is selected.

ok let me give that a try, thanks!

Sweet! Glad you got it to work 🙌