启动服务器时出现 Rails 错误

Question

当我尝试启动本地 Rails 服务器时，出现以下错误：

C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bcrypt-3.1.11-x86-mingw32/lib/bcrypt.rb:16:in `require': cannot load such file -- bcrypt_ext (LoadError)
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bcrypt-3.1.11-x86-mingw32/lib/bcrypt.rb:16:in `rescue in <top (required)>'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bcrypt-3.1.11-x86-mingw32/lib/bcrypt.rb:12:in `<top (required)>'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.6/lib/bundler/runtime.rb:91:in `require'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.6/lib/bundler/runtime.rb:91:in `block (2 levels) in require'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.6/lib/bundler/runtime.rb:86:in `each'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.6/lib/bundler/runtime.rb:86:in `block in require'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.6/lib/bundler/runtime.rb:75:in `each'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.6/lib/bundler/runtime.rb:75:in `require'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/bundler-1.14.6/lib/bundler.rb:107:in `require'
    from C:/Users/Frank/Dropbox/DePaul/Year 2/Winter/IT 232/divdev232/config/application.rb:7:in `<top (required)>'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:88:in `require'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:88:in `block in server'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:85:in `tap'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:85:in `server'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
    from C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/railties-5.0.2/lib/rails/commands.rb:18:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

我只是对其中的任何含义或如何修复它感到困惑，因为我仍然对 Rails 很熟悉。这是我当前的 Gemfile：

source 'https://rubygems.org'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.0.0', '>= 5.0.0.1'

# Use sqlite3 as the database for Active Record
gem 'sqlite3'

# 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'
end

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

Answer 1

这是我的解决方案：

首先通过运行以下两个命令卸载 bcrypt 和 bcrypt-ruby：

1. gem uninstall bcrypt 和 gem uninstall bcrypt-ruby
2. 用gem install bcrypt --platform=ruby重新安装

3. 在您的 Gemfile 中写入 gem 'bcrypt-ruby', '3.1.5', :require => 'bcrypt'

4. 运行bundle install

Answer 2

将 Gemfile 更新为：

gem 'bcrypt-ruby', '3.1.1.rc1', :require => 'bcrypt'