Extract QRCode controller

assets/controllers/qrcode_controller.js

@@ -0,0 +1,10 @@
+import { Controller } from '@hotwired/stimulus';
+import jrQrcode from 'jr-qrcode';
+
+export default class extends Controller {
+  static values = { url: String };
+
+  connect() {
+    this.element.setAttribute('src', jrQrcode.getQrBase64(this.urlValue));
+  }
+}