“_from.erb”上的“rails generate scaffold”错误（jbuilder问题？）
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【中文标题】“_from.erb”上的“rails generate scaffold”错误（jbuilder问题？）【英文标题】："rails generate scaffold" error on "_from.erb" (jbuilder issue?) 【发布时间】：2019-04-06 07:35:38 【问题描述】：我对 Ruby 和 Rails 比较陌生，一直在空闲时间自学。我最近在我的 gemfile 中添加了一些 gem，现在我的脚手架给了我错误——在 *** 上找不到解决我问题的另一个答案（如果我的搜索能力没有达到标准，请提前道歉）。
宝石文件：
source 'https://rubygems.org'
git_source(:github) |repo| "https://github.com/#repo.git"
ruby '2.5.1'
# Set up local .env file, require immediately
gem 'dotenv-rails', :require => 'dotenv/rails-now'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.1'
# Use postgresql as the database for Active Record
gem 'pg'
# Use Puma as the app server
gem 'puma', '~> 3.11'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for javascript assets
gem 'uglifier', '>= 1.3.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
gem 'duktape'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# 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', '~> 4.0'
# Use ActiveModel has_secure_password
gem 'bcrypt', '~> 3.1.7'
# Use ActiveStorage variant
# gem 'mini_magick', '~> 4.8'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.1.0', require: false
group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
end
group :development do
# Access an interactive console on exception pages or by calling 'console' anywhere in the code.
gem 'web-console', '>= 3.3.0'
# Mailcatcher for local mail debugging
gem 'mailcatcher'
end
group :test do
# Adds support for Capybara system testing and selenium driver
gem 'capybara', '>= 2.15', '< 4.0'
gem 'selenium-webdriver'
# Easy installation and use of chromedriver to run system tests with Chrome
gem 'chromedriver-helper'
end
# group :development, :test do
# gem 'foreman'
# end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
#Add Sprockets for installing gems
gem 'sprockets-rails', '>= 2.3.2', :require => 'sprockets/railtie'
#Add Bootstrap
gem 'bootstrap', '>= 4.1.3'
#Add JQuery (for Bootstrap)
gem 'jquery-rails', '~> 4.3.1'
#Add Chart.js for analytics
gem 'chart-js-rails', '~> 0.1.6'
#Add Devise for Authorization and Authentication
gem 'devise', '~> 4.4.3'
#Add Font Awesome Icons
gem 'font-awesome-sass', '~> 5.2.0'
#Mini-Magick for Image Processing (のし Generator)
gem 'mini_magick'
#Auto-upload setup for AWS S3
gem 'carrierwave'
gem 'carrierwave-google-storage'
# Easy Categories for Manual Articles
gem 'ancestry'
# CKEditor WYSIWYG text editor
gem 'simple_form'
gem 'ckeditor', github: 'galetahub/ckeditor'
# Sendgrid for confirmations, etc.
gem 'sendgrid-ruby'
这是我尝试生成脚手架时的错误：
rails generate scaffold Market namae:string address:string phone:string repphone:string fax:string cost:decimal excost:decimal history:string
invoke active_record
identical db/migrate/20181029224847_create_markets.rb
identical app/models/market.rb
invoke test_unit
identical test/models/market_test.rb
identical test/fixtures/markets.yml
invoke resource_route
route resources :markets
invoke scaffold_controller
identical app/controllers/markets_controller.rb
invoke erb
exist app/views/markets
conflict app/views/markets/index.html.erb
Overwrite /home/mudl/kanri/Dropbox/funabiki-online-h/app/views/markets/index.html.erb? (enter "h" for help) [Ynaqdh] n
skip app/views/markets/index.html.erb
identical app/views/markets/edit.html.erb
identical app/views/markets/show.html.erb
conflict app/views/markets/new.html.erb
Overwrite /home/mudl/kanri/Dropbox/funabiki-online-h/app/views/markets/new.html.erb? (enter "h" for help) [Ynaqdh] n
skip app/views/markets/new.html.erb
Traceback (most recent call last):
71: from bin/rails:4:in `<main>'
70: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require'
69: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:253:in `load_dependency'
68: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `block in require'
67: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
66: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
65: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
64: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
63: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
62: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/commands.rb:18:in `<main>'
61: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/command.rb:46:in `invoke'
60: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/command/base.rb:65:in `perform'
59: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor.rb:369:in `dispatch'
58: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:126:in `invoke_command'
57: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/command.rb:27:in `run'
56: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/commands/generate/generate_command.rb:26:in `perform'
55: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/generators.rb:276:in `invoke'
54: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/base.rb:444:in `start'
53: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/group.rb:232:in `dispatch'
52: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `invoke_all'
51: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `map'
50: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `each'
49: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `block in invoke_all'
48: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:126:in `invoke_command'
47: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/command.rb:27:in `run'
46: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/group.rb:133:in `_invoke_from_option_scaffold_controller'
45: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/group.rb:266:in `_invoke_for_class_method'
44: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/shell.rb:68:in `with_padding'
43: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/group.rb:277:in `block in _invoke_for_class_method'
42: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:115:in `invoke'
41: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/group.rb:232:in `dispatch'
40: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `invoke_all'
39: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `map'
38: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `each'
37: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `block in invoke_all'
36: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:126:in `invoke_command'
35: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/command.rb:27:in `run'
34: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/group.rb:133:in `_invoke_from_option_template_engine'
33: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/group.rb:266:in `_invoke_for_class_method'
32: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/shell.rb:68:in `with_padding'
31: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/group.rb:274:in `block in _invoke_for_class_method'
30: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/group.rb:274:in `instance_exec'
29: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/generators/rails/scaffold_controller/scaffold_controller_generator.rb:26:in `block in <class:ScaffoldControllerGenerator>'
28: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:115:in `invoke'
27: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/group.rb:232:in `dispatch'
26: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `invoke_all'
25: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `map'
24: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `each'
23: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:133:in `block in invoke_all'
22: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:126:in `invoke_command'
21: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/command.rb:27:in `run'
20: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/generators/erb/scaffold/scaffold_generator.rb:18:in `copy_view_files'
19: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/generators/erb/scaffold/scaffold_generator.rb:18:in `each'
18: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/generators/erb/scaffold/scaffold_generator.rb:19:in `block in copy_view_files'
17: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/generators/erb/scaffold/scaffold_generator.rb:19:in `each'
16: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/generators/erb/scaffold/scaffold_generator.rb:21:in `block (2 levels) in copy_view_files'
15: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/generators/named_base.rb:24:in `template'
14: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/generators/named_base.rb:49:in `inside_template'
13: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.1/lib/rails/generators/named_base.rb:25:in `block in template'
12: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/actions/file_manipulation.rb:115:in `template'
11: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/actions/create_file.rb:25:in `create_file'
10: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/actions.rb:95:in `action'
9: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/actions/create_file.rb:60:in `invoke!'
8: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/actions/empty_directory.rb:113:in `invoke_with_conflict_check'
7: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/actions/create_file.rb:72:in `on_conflict_behavior'
6: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/actions/create_file.rb:46:in `identical?'
5: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/actions/create_file.rb:53:in `render'
4: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.19.4/lib/thor/actions/file_manipulation.rb:116:in `block in template'
3: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/2.5.0/erb.rb:876:in `result'
2: from /home/mudl/.rbenv/versions/2.5.1/lib/ruby/2.5.0/erb.rb:876:in `eval'
1: from (erb):2:in `template'
(erb):2:in `concat': can't modify frozen String (FrozenError)
如您所见，当它到达脚手架生成的“_form.html”部分时似乎有问题。
我检查以确保文件没有奇怪的权限。我怀疑它与 Foreman （这是 Heroku 的东西）或 dotenv （这对于本地开发的东西是必要的，所以我可以存储秘密）有关。我在其他地方发现了一些关于以前 beta 版本的 rails 5.1 与 Thor 存在问题的帖子，但我什至不知道 Thor 做了什么（这是一些依赖项），他们说该错误已在后续版本中修复（例如，我正在使用5.2 无论如何）。
我的另一个理论是它与 Jbuilder 和 json 的东西有关，我也是新手，甚至不知道从哪里开始解决。
有什么想法吗？与此同时，我将在没有脚手架的情况下工作。
无论如何，感谢您的宝贵时间！
感谢您的宝贵时间！
更新！
好吧，我自己解决了这个问题，只是想报告一下。所以，我忘记了我在安装 Nokogiri 时也遇到了麻烦。每当我运行“捆绑更新”时，我都会收到一条错误消息，提示我需要确保正确安装了最新版本的 Nokogiri，然后再继续。我忽略了这一点，因为我无法弄清楚。只需按照nokogiri.org 的说明并安装必要的库即可解决此问题：
sudo apt-get install build-essential patch ruby-dev zlib1g-dev liblzma-dev
gem 安装 nokogiri
完成此操作后，我心想：“呃，呃，这可能是脚手架问题的解决方案。”确实如此。
【问题讨论】：
你用 foreman 做什么？，你能把它删除，运行 bundle 并重试给你那个错误的命令吗？ 有时我在我的开发环境中运行“rails server”而不是“heroku local”。我遇到了一些错误，我认为工头是我试图解决这个问题的遗留问题。无论如何，我删除了它，现在无论以哪种方式运行服务器都没有问题——所以谢谢你。我运行了“gem uninstall foreman”（有多个版本，我按 3 删除所有版本）。我还从我的 gemfile 中删除了它。然后我运行“gem cleanup”，只是为了清理任何剩余的东西。然后我从上面运行“bundle install”和“rails g scaffold..”。不幸的是，我得到了完全相同的错误。 另一个更新。最近还禁用了 turbolinks，它与引导程序混淆，因此弹出窗口不起作用。禁用此功能也无法解决脚手架问题。 【参考方案1】：详情如上，但是：
嗯，我自己解决了这个问题，只是想报告一下。 所以，我忘记了我在安装 Nokogiri 时也遇到了麻烦。每当我 运行“捆绑更新”我收到一个错误，说我需要做 确保之前正确安装了最新版本的 Nokogiri 继续。我忽略了这一点，因为我无法弄清楚。这 只需按照 nokogiri.org 上的说明解决 安装必要的库：
sudo apt-get install build-essential patch ruby-dev zlib1g-dev liblzma-dev gem install nokogiri在我这样做之后，我对自己说：“呃，呃，这可能是 解决脚手架问题。”确实如此。
【讨论】：
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