我正在尝试使用 Bootstrap 5 运行一些示例 Rails 应用程序。我创建了下拉菜单，但导航栏没有下拉。我尝试了所有教程，但没有任何作用。这是我的配置：
Rails 7.1.3.2
yarn -v
1.22.19
node --version
v20.12.1
Gemfile
gem "rails", "~> 7.1.3"
gem "sprockets-rails"
gem "pg", "~> 1.1"
gem "puma", ">= 5.0"
gem "jsbundling-rails"
gem "turbo-rails"
gem "stimulus-rails"
gem "cssbundling-rails"
gem "jbuilder"
gem "jquery-ui-rails"
gem "jquery-rails"
gem "tzinfo-data", platforms: %i[ windows jruby ]
# Reduces boot times through caching; required in config/boot.rb
gem "bootsnap", require: false
# Use Active Storage variants [https://guides.rubyonrails.org/active_storage_overview.html#transforming-images]
# gem "image_processing", "~> 1.2"
group :development, :test do
# See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
gem "debug", platforms: %i[ mri windows ]
end
group :development do
# Use console on exceptions pages [https://github.com/rails/web-console]
gem "web-console"
group :test do
# Use system testing [https://guides.rubyonrails.org/testing.html#system-testing]
gem "capybara"
gem "selenium-webdriver"
end
文件app/javascript/application.js
// Entry point for the build script in your package.json
import "@hotwired/turbo-rails"
import "./controllers"
import * as bootstrap from "bootstrap"
文件app/views/layouts/application.html.erb
<!DOCTYPE html>
<html>
<head>
<title>Knfapp</title>
<meta name="viewport" content="width=device-width,initial-scale=1">
<%= csrf_meta_tags %>
<%= csp_meta_tag %>
<%= stylesheet_link_tag "application", "data-turbo-track": "reload" %>
<%= javascript_include_tag "application", "data-turbo-track": "reload", type: "module", defer: true %>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" role="button" data-bs-toggle="dropdown" aria-expanded="false">
Dropdown link
</a>
<ul class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li><a class="dropdown-item" href="#">Something else here</a></li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
<%= yield %>
<footer><p>little</p></footer>
</body>
</html>
使用命令运行项目：
rails new abcapp -d postgresql -j esbuild --css bootstrap
我坐了几个小时，但没有任何效果。我将不胜感激任何建议。
看起来我需要跑
yarn build
和
rails assets:precompile
让这项工作发挥作用。