If / Else

The If / Else node (if_else) tests its branches' conditions in order and continues the run down the first one that holds, or down its Else branch when none does. Every other branch, and everything only it leads to, shows as skipped in the run trace.

Configuration

Writing a condition

A condition is a {{ }} expression with at most one comparison in it:

For example {{ upstream.score.output.value }} >= 50, {{ trigger.body.country }} == DE, or {{ upstream.review.output.response.approved }} == yes. Quote a value that contains spaces or operator characters: {{ trigger.body.status }} == "on hold".

A condition with no operator is tested for truthiness: true, a non-zero number, any non-empty text other than false, or any object or list holds; false, 0, empty text, null and a missing value do not. A condition that is exactly one {{ }} reference to a true/false value — a Classify node's discarded, say — is used as it is.

There are no and/or connectives, function calls or arithmetic, by design. To test two things, chain two If / Else nodes, or compute the value first with an AI Prompt or Edit Fields node.

Output

Limits and errors

• At most 5 branches besides Else.
• A condition the node cannot parse — two comparisons, or an empty side — fails the node, naming the condition. It is never quietly treated as false.
• A {{ }} reference that cannot be resolved fails the node the same way it fails any other.

Example

name: Route by amount
description: Sends large orders for approval.
graph:
  nodes:
    - id: order
      type: trigger_http
      position: { x: 0, y: 0 }
      data:
        method: POST
        fields:
          - { name: total, type: number, required: true }
    - id: check-total
      type: if_else
      position: { x: 280, y: 0 }
      data:
        branches:
          - { id: large, label: Over 10 000, expression: '{{ trigger.body.total }} > 10000' }
        defaultBranchId: default
    - id: approve
      type: human_review
      position: { x: 560, y: -80 }
      data:
        title: Large order
        message: 'An order of {{ trigger.body.total }} needs approval.'
        responseFields:
          - { name: approved, type: yes_no }
        timeoutValue: 24
        timeoutUnit: hours
        approverRequired: true
    - id: accept
      type: variable
      position: { x: 560, y: 80 }
      data: { name: status, type: string, initialValue: accepted }
  edges:
    - { id: order-to-check, source: order, target: check-total }
    - { id: large-to-approve, source: check-total, target: approve, sourceHandle: large }
    - { id: else-to-accept, source: check-total, target: accept, sourceHandle: default }

In a Package

• Travels: branches, defaultBranchId
• Converted: none
• Never carried: none