Render Components from TurboStreams

turbo.rb

module TurboStreamsBroadcastExtensions
  def broadcast_action_later_to(*streamables, action:, target: nil, targets: nil, attributes: {}, **rendering)
    render_component_to_html(rendering)
    super
  end

  def broadcast_action_to(*streamables, action:, target: nil, targets: nil, attributes: {}, **rendering)
    render_component_to_html(rendering)
    super
  end

  private

  def render_component_to_html(rendering)
    if rendering&.dig(:component)&.respond_to?(:render_in) && rendering&.dig(:html).blank?
      rendered_component = ApplicationController.render(rendering.delete(:component), layout: false)
      rendering[:html] = rendered_component
    end
  end
end

Turbo::Streams::Broadcasts.prepend TurboStreamsBroadcastExtensions