Call render a turbo-stream template in a stimulus controller

1

Hi

I get a turbo-stream template back to my stimulus modal controller. The response looks as:

<turbo-stream action="append" target="flash_messages">
 <template>
  <!-- app/views/application/_flash_message.html.erb -->
  <div id="flash_messages">
    <div class="alert alert-notice">
      Action not authorized
    </div>
  </div>
 </template>
</turbo-stream>

I can fetch the flash_messages and append them to correct parent, but is that best way?

I have been looking for a way just call Turbo from my stimulus controller in browser and the let it handle the update for me, is that possible?

Best
Jens

2

You can use the Turbo.renderStreamMessage() method to handle the Turbo Stream updates from your Stimulus controllers.

Here’s a simple controller that makes a fetch request to the server, receives a stream response, and renders that stream into the document.

import { Controller } from "@hotwired/stimulus"

// Connects to data-controller="replace"
export default class extends Controller {
  swap() {
    fetch("/test/replace", {
      method: "POST",
      headers: {
        Accept: "text/vnd.turbo-stream.html",
        "X-CSRF-Token": this.getCsrfToken()
      }
    })
      .then(r => r.text())
      .then(html => Turbo.renderStreamMessage(html)) // <turbo-stream action="replace"> ...</turbo-stream>
  }

  getCsrfToken() {
    return document.querySelector('meta[name="csrf-token"]').content;
  }
}

This is what Turbo does behind the scenes.

Hope that helps!