Date month - Declarative Forms

If you have not created a form before, start with Create a form.

form.yaml

version: 1
title: "Example form"
description: "A comprehensive date_month example."

sections:
  - id: section_1
    title: "Section 1"
    fields:
      - id: question_1
        type: date_month
        label: "Question 1"
        validators:
          - required
          - type: min
            value: "2026-01"
            message: "Use a month on or after January 2026."
          - type: max
            value: "2026-12"
            message: "Use a month on or before December 2026."
          - type: expression
            expression: "data.question_1 >= '2026-06'"
            message: "Choose a month in the second half of the year."

    next: done