Slack static_select avoid backend call when change

Question

I have a slack modal with a static_select

{
      block_id: "my_block_id",
      type: "section",
      text: {
        type: "mrkdwn",
        text: "Please select one"
      },
      accessory: {
        type: "static_select",
        action_id: "select_type",
        placeholder: {
          type: "plain_text",
          text: "Select one"
        },
        options: self.types_options
      }
    },

When the user selects one of the option a backend call is been triggered, can I avoid that and have the call triggered on submit form button click?

Answer 1

Put your static_select inside an input rather than a section.

When someone uses an interactive component in your app's modal views, the app will receive a block_actions payload.

This does not apply to components included in an input block (see below for details about those).

https://api.slack.com/surfaces/modals/using#components

Any interactive components used within input blocks will not send this block_actions payload. They are included in view_submission payloads only.

https://api.slack.com/reference/interaction-payloads/block-actions