我在我的新 Rails 6 应用程序中安装了 Stimulus.js。
在我的packs/application.js文件中，我有以下内容：
// This file is automatically compiled by Webpack, along with any other files
// present in this directory. You're encouraged to place your actual application logic in
// a relevant structure within app/javascript and only use these pack files to reference
// that code so it'll be compiled.
require("@rails/ujs").start()
require("turbolinks").start()
require("@rails/activestorage").start()
require("channels")
// Uncomment to copy all static images under ../images to the output folder and reference
// them with the image_pack_tag helper in views (e.g <%= image_pack_tag 'rails.png' %>)
// or the `imagePath` JavaScript helper below.
//
// const images = require.context('../images', true)
// const imagePath = (name) => images(name, true)
import "controllers";
在里面app/javascript/controllers/index.js，我有以下内容：
// Load all the controllers within this directory and all subdirectories.
// Controller files must be named *_controller.js.
import { Application } from "stimulus"
import { definitionsFromContext } from "stimulus/webpack-helpers"
const application = Application.start()
const context = require.context(".", true, /.js$/)
application.load(definitionsFromContext(context))
我有一个hello_controller.js看起来像
// Visit The Stimulus Handbook for more details
// https://stimulusjs.org/handbook/introduction
//
// This example controller works with specially annotated HTML like:
//
// <div data-controller="hello">
// <h1 data-target="hello.output"></h1>
// </div>
import { Controller } from "stimulus"
export default class extends Controller {
connect() {
console.log('HELLO');
}
}
我已经将它插入到 DOM 元素上，如下所示：
<div data-controller="hello">Hello, world</div>
当 webpacker 捆绑所有内容并刷新站点时，我console.log的开发控制台中没有呈现，也没有看到任何错误消息。