From https://once.com/writebook

app/javascript/controllers/form_controller.js

@@ -0,0 +1,17 @@
+import { Controller } from "@hotwired/stimulus"
+
+export default class extends Controller {
+  static targets = [ "cancel" ]
+
+  submit() {
+    this.element.requestSubmit()
+  }
+
+  cancel() {
+    this.cancelTarget?.click()
+  }
+
+  preventAttachment(event) {
+    event.preventDefault()
+  }
+}