新手问题 Rails 新建 model 的时候报错 uninitialized constant ActiveSupport::EventedFileUpdateChecker

xiaobai2 · 发布于 2016年12月28日 · 最后由 xiaobai2 回复于 2017年1月04日 · 491 次阅读
96

我的config/environments/development.rb里的代码如下:

config.file_watcher = ActiveSupport::EventedFileUpdateChecker

版本分别是:2.2.2/4.2.5.1 刚建的一个项目,好奇怪 报错信息如下:

共收到 14 条回复
2

你 rails new 一个新项目出来,看看新出来的 config/environments/development.rb 里面是否有这么一行,如果没有,去掉你项目里面的。

96

#1楼 @huacnlee 我想知道这个类是用来干什么用的

2

#2楼 @xiaobai2 关注本地文件更新,重新载入代码的

96

#3楼 @huacnlee 新建了一个项目同样的问题依然存在

18898

没有安装bundle吧?

15

你的 rails 项目不是 4.2.5.1 的, 4.2.5.1 没有 config.file_watcher = ActiveSupport::EventedFileUpdateChecker

ref: https://github.com/rails/rails/blob/v4.2.5.1/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt

从 rails 5 才开始有 config.file_watcher

ref: https://allmychanges.com/p/ruby/rails/#5.0 https://github.com/rails/rails/commits/92703a9ea5d8b96f30e0b706b801c9185ef14f0e/activesupport/lib/active_support/evented_file_update_checker.rb

  • rails -v
  • bin/rails -v
  • 贴 Gemfile 和 Gemfile.lock
96

我是手动把rails 版本改成4.2.5.1了,然后又bundle成功了,可是为什么还会出现rails5的东西呢 #6楼 @huobazi Gemfile 如下:

source 'https://ruby.taobao.org'

git_source(:github) do |repo_name|
  repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/")
  "https://github.com/#{repo_name}.git"
end


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.5.1'
# Use mysql as the database for Active Record
gem 'mysql2', '>= 0.3.18', '< 0.5'
# Use Puma as the app server
gem 'puma', '~> 3.0'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 3.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platform: :mri
end

group :development do
  # Access an IRB console on exception pages or by using <%= console %> anywhere in the code.
  gem 'web-console', '>= 3.3.0'
  gem 'listen', '~> 3.0.5'
  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
  gem 'spring-watcher-listen', '~> 2.0.0'
end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

Gemfile.lock

GEM
  remote: https://ruby.taobao.org/
  specs:
    actionmailer (4.2.5.1)
      actionpack (= 4.2.5.1)
      actionview (= 4.2.5.1)
      activejob (= 4.2.5.1)
      mail (~> 2.5, >= 2.5.4)
      rails-dom-testing (~> 1.0, >= 1.0.5)
    actionpack (4.2.5.1)
      actionview (= 4.2.5.1)
      activesupport (= 4.2.5.1)
      rack (~> 1.6)
      rack-test (~> 0.6.2)
      rails-dom-testing (~> 1.0, >= 1.0.5)
      rails-html-sanitizer (~> 1.0, >= 1.0.2)
    actionview (4.2.5.1)
      activesupport (= 4.2.5.1)
      builder (~> 3.1)
      erubis (~> 2.7.0)
      rails-dom-testing (~> 1.0, >= 1.0.5)
      rails-html-sanitizer (~> 1.0, >= 1.0.2)
    activejob (4.2.5.1)
      activesupport (= 4.2.5.1)
      globalid (>= 0.3.0)
    activemodel (4.2.5.1)
      activesupport (= 4.2.5.1)
      builder (~> 3.1)
    activerecord (4.2.5.1)
      activemodel (= 4.2.5.1)
      activesupport (= 4.2.5.1)
      arel (~> 6.0)
    activesupport (4.2.5.1)
      i18n (~> 0.7)
      json (~> 1.7, >= 1.7.7)
      minitest (~> 5.1)
      thread_safe (~> 0.3, >= 0.3.4)
      tzinfo (~> 1.1)
    arel (6.0.4)
    builder (3.2.2)
    byebug (9.0.6)
    coffee-rails (4.2.1)
      coffee-script (>= 2.2.0)
      railties (>= 4.0.0, < 5.2.x)
    coffee-script (2.4.1)
      coffee-script-source
      execjs
    coffee-script-source (1.12.2)
    concurrent-ruby (1.0.4)
    debug_inspector (0.0.2)
    erubis (2.7.0)
    execjs (2.7.0)
    ffi (1.9.14)
    globalid (0.3.7)
      activesupport (>= 4.1.0)
    i18n (0.7.0)
    jbuilder (2.6.1)
      activesupport (>= 3.0.0, < 5.1)
      multi_json (~> 1.2)
    jquery-rails (4.2.1)
      rails-dom-testing (>= 1, < 3)
      railties (>= 4.2.0)
      thor (>= 0.14, < 2.0)
    json (1.8.3)
    listen (3.0.8)
      rb-fsevent (~> 0.9, >= 0.9.4)
      rb-inotify (~> 0.9, >= 0.9.7)
    loofah (2.0.3)
      nokogiri (>= 1.5.9)
    mail (2.6.4)
      mime-types (>= 1.16, < 4)
    mime-types (3.1)
      mime-types-data (~> 3.2015)
    mime-types-data (3.2016.0521)
    mini_portile2 (2.1.0)
    minitest (5.10.1)
    multi_json (1.12.1)
    mysql2 (0.4.5)
    nokogiri (1.7.0)
      mini_portile2 (~> 2.1.0)
    puma (3.6.2)
    rack (1.6.5)
    rack-test (0.6.3)
      rack (>= 1.0)
    rails (4.2.5.1)
      actionmailer (= 4.2.5.1)
      actionpack (= 4.2.5.1)
      actionview (= 4.2.5.1)
      activejob (= 4.2.5.1)
      activemodel (= 4.2.5.1)
      activerecord (= 4.2.5.1)
      activesupport (= 4.2.5.1)
      bundler (>= 1.3.0, < 2.0)
      railties (= 4.2.5.1)
      sprockets-rails
    rails-deprecated_sanitizer (1.0.3)
      activesupport (>= 4.2.0.alpha)
    rails-dom-testing (1.0.8)
      activesupport (>= 4.2.0.beta, < 5.0)
      nokogiri (~> 1.6)
      rails-deprecated_sanitizer (>= 1.0.1)
    rails-html-sanitizer (1.0.3)
      loofah (~> 2.0)
    railties (4.2.5.1)
      actionpack (= 4.2.5.1)
      activesupport (= 4.2.5.1)
      rake (>= 0.8.7)
      thor (>= 0.18.1, < 2.0)
    rake (12.0.0)
    rb-fsevent (0.9.8)
    rb-inotify (0.9.7)
      ffi (>= 0.5.0)
    sass (3.4.23)
    sass-rails (5.0.6)
      railties (>= 4.0.0, < 6)
      sass (~> 3.1)
      sprockets (>= 2.8, < 4.0)
      sprockets-rails (>= 2.0, < 4.0)
      tilt (>= 1.1, < 3)
    spring (2.0.0)
      activesupport (>= 4.2)
    spring-watcher-listen (2.0.1)
      listen (>= 2.7, < 4.0)
      spring (>= 1.2, < 3.0)
    sprockets (3.7.1)
      concurrent-ruby (~> 1.0)
      rack (> 1, < 3)
    sprockets-rails (3.2.0)
      actionpack (>= 4.0)
      activesupport (>= 4.0)
      sprockets (>= 3.0.0)
    thor (0.19.4)
    thread_safe (0.3.5)
    tilt (2.0.5)
    turbolinks (5.0.1)
      turbolinks-source (~> 5)
    turbolinks-source (5.0.0)
    tzinfo (1.2.2)
      thread_safe (~> 0.1)
    uglifier (3.0.4)
      execjs (>= 0.3.0, < 3)
    web-console (3.3.0)
      activemodel (>= 4.2)
      debug_inspector
      railties (>= 4.2)

PLATFORMS
  ruby

DEPENDENCIES
  byebug
  coffee-rails (~> 4.2)
  jbuilder (~> 2.5)
  jquery-rails
  listen (~> 3.0.5)
  mysql2 (>= 0.3.18, < 0.5)
  puma (~> 3.0)
  rails (= 4.2.5.1)
  sass-rails (~> 5.0)
  spring
  spring-watcher-listen (~> 2.0.0)
  turbolinks (~> 5)
  tzinfo-data
  uglifier (>= 1.3.0)
  web-console (>= 3.3.0)

BUNDLED WITH
   1.13.6

96

#5楼 @flemon1986 bundle 没问题啊

15

#7楼 @xiaobai2

我是手动把rails 版本改成4.2.5.1了,然后又bundle成功了,可是为什么还会出现rails5的东西呢

是什么意思?

96

#9楼 @huobazi rails new demo 默认是5的,然后我重新在gemfile里边把rails的版本给改了

15

#10楼 @xiaobai2 改了 Gemfile 也应该改相应的东西 已有的文件又不会自动改掉。

96

#11楼 @huobazi 好吧,实在是只改了rails的版本,我再看看是不是其它原因

18898

你要rails4的项目要先把环境Rail版本改成4的,然后再用rails new. 你用rails5的环境执行rails new当然会给你rails5的东西,后再改gemfile bundle不会自动给你删添改动非gemfile.lock的文件

96

#13楼 @flemon1986 就是这个原因😅

32 xiaobai2 关闭了讨论 1月04日 10:43
需要 登录 后方可回复, 如果你还没有账号请点击这里 注册