Date picker element

Allows users to select a date from a calendar style UI.


Type	`datepicker`
Available in	Messages, Modals, Home tab
Works in blocks	Section block, Actions block, Input block

Usage

Picking a date sends your app a block_actions payload with the date as selected_date (YYYY-MM-DD):

{
  "type": "datepicker",
  "action_id": "follow_up_date",
  "block_id": "renewal_acme",
  "placeholder": { "type": "plain_text", "text": "Select a date" },
  "selected_date": "2026-11-18",
  "action_ts": "1793786400.000000"
}

See the button element for the rest of the payload.

The current value is also reported in state.values[block_id][action_id] (as { "type": …, <value field> }) of every later interaction with the same message or view.

Inside an input block, changing the value sends nothing on its own: your app reads it from view.state.values in the view_submission payload. Set dispatch_action: true on the input block to also receive a block_actions payload on every change.

Fields

Field	Type	Description	Required?
`type`	String	The type of element. In this case `type` is always `datepicker`.	Required
`action_id`	String	An identifier for the action triggered when a date is selected. You can use this when you receive an interaction payload to identify the source of the action. Should be unique among all other `action_id`s in the containing block. Maximum length is 255 characters. If you leave it out, Repzo generates one.	Optional
`initial_date`	String	The initial date that is selected when the element is loaded. This should be in the format `YYYY-MM-DD`.	Optional
`confirm`	Confirmation dialog object	A confirm object that defines an optional confirmation dialog that appears after a date is selected. If the reader cancels, nothing is sent to your app.	Optional
`focus_on_load`	Boolean	Indicates whether the element will be set to auto focus within the view. Only one element can be set to `true`. Defaults to `false`.	Optional
`placeholder`	Text object	A `plain_text` only text object that defines the placeholder text shown on the datepicker. Maximum length for the `text` in this field is 150 characters.	Optional

Examples

A section with a date picker

A section with a date picker — how it renders in Repzo Chat

{
  "blocks": [
    {
      "type": "section",
      "block_id": "renewal_acme",
      "text": {
        "type": "mrkdwn",
        "text": "The *Acme Logistics* contract ends on 30 November. When should we follow up about the renewal?"
      },
      "accessory": {
        "type": "datepicker",
        "action_id": "follow_up_date",
        "initial_date": "2026-11-18",
        "placeholder": {
          "type": "plain_text",
          "text": "Select a date"
        }
      }
    }
  ]
}

A date picker in a form

This example belongs in a modal view — the screenshot shows it in a modal.

A date picker in a form — how it renders in Repzo Chat

{
  "blocks": [
    {
      "type": "input",
      "block_id": "contract_start",
      "label": {
        "type": "plain_text",
        "text": "Contract start date"
      },
      "element": {
        "type": "datepicker",
        "action_id": "start_date",
        "placeholder": {
          "type": "plain_text",
          "text": "Select a date"
        }
      },
      "hint": {
        "type": "plain_text",
        "text": "Billing starts on this date."
      }
    }
  ]
}