Stimulus 3

app/javascript/controllers/conditional_question_controller.js

@@ -1,4 +1,4 @@
-import { Controller } from "stimulus"
+import { Controller } from "@hotwired/stimulus"
 
 export default class extends Controller {
   displayConditional() {

app/javascript/controllers/hello_controller.js

@@ -1,7 +0,0 @@
-import { Controller } from "@hotwired/stimulus"
-
-export default class extends Controller {
-  connect() {
-    this.element.textContent = "Hello World!"
-  }
-}

app/javascript/controllers/index.js

@@ -1,7 +1,9 @@
-// This file is auto-generated by ./bin/rails stimulus:manifest:update
-// Run that command whenever you add a new controller
+// Load all the controllers within this directory and all subdirectories.
+// Controller files must be named *_controller.js.
 
-import { application } from "./application"
+import { Application } from "@hotwired/stimulus"
+import { definitionsFromContext } from "@hotwired/stimulus-webpack-helpers"
 
-import HelloController from "./hello_controller"
-application.register("hello", HelloController)
+const application = Application.start()
+const context = require.context("controllers", true, /_controller\.js$/)
+application.load(definitionsFromContext(context))

app/views/form/_radio_question.html.erb

@@ -10,7 +10,7 @@
         <%= f.govuk_radio_button question_key, key, label: { text: val },
             "data-controller": "conditional-question",
             "data-action": "click->conditional-question#displayConditional",
-            "data-info": "#{question["conditional_for"].to_json}"
+            "data-info": question["conditional_for"].to_json
         %>
       <% else %>
         <%= f.govuk_radio_button question_key, val, label: { text: val } %>

package.json

@@ -3,6 +3,7 @@
   "private": true,
   "dependencies": {
     "@hotwired/stimulus": "^3.0.0",
+    "@hotwired/stimulus-webpack-helpers": "^1.0.1",
     "@hotwired/turbo": "^7.0.0-rc.3",
     "@hotwired/turbo-rails": "^7.0.0-rc.3",
     "@rails/actioncable": "^6.0.0",
@@ -10,8 +11,7 @@
     "@rails/ujs": "^6.0.0",
     "@rails/webpacker": "5.4.0",
     "govuk-frontend": "^3.13.0",
-    "stimulus": "^2.0.0",
-    "stimulus-use": "^0.26.0",
+    "stimulus": "^3.0.0",
     "webpack": "^4.46.0",
     "webpack-cli": "^3.3.12"
   },