Listening to actions

Your app can listen to user actions, like button clicks, and menu selects, using the action method.

Actions can be filtered on an action_id of type str or re.Pattern. action_ids act as unique identifiers for interactive components on the Slack platform.

You'll notice in all action() examples, ack() is used. It is required to call the ack() function within an action listener to acknowledge that the request was received from Slack. This is discussed in the acknowledging requests section.

Refer to the module document to learn the available listener arguments.

# Your listener will be called every time a block element with the action_id "approve_button" is triggered
@app.action("approve_button")
def update_message(ack):
    ack()
    # Update the message to reflect the action

Listening to actions using a constraint object

You can use a constraints object to listen to block_ids and action_ids (or any combination of them). Constraints in the object can be of type str or re.Pattern.

# Your function will only be called when the action_id matches 'select_user' AND the block_id matches 'assign_ticket'
@app.action({
    "block_id": "assign_ticket",
    "action_id": "select_user"
})
def update_message(ack, body, client):
    ack()

    if "container" in body and "message_ts" in body["container"]:
        client.reactions_add(
            name="white_check_mark",
            channel=body["channel"]["id"],
            timestamp=body["container"]["message_ts"],
        )