Rails生成控制器注释抛出错误

Question

我正在尝试使用rails生成命令生成评论控制器，但它给出了一个奇怪的错误:-

$ rails generate controller comments
The name 'CommentsController' is either already used in your application or reserved by Ruby on Rails. Please choose an alternative and run this generator again.

我已经检查了，但我没有评论控制器。以下是我尝试过的命令:-

$ rails generate controller Comments create
The name 'CommentsController' is either already used in your application or reserved by Ruby on Rails. Please choose an alternative and run this generator again.
$ rails generate controller comments
The name 'CommentsController' is either already used in your application or reserved by Ruby on Rails. Please choose an alternative and run this generator again.
$ rails g controller Comments
The name 'CommentsController' is either already used in your application or reserved by Ruby on Rails. Please choose an alternative and run this generator again

请帮我一下。

这是GemFile:-

source 'http://rubygems.org'
gem 'rails', '3.2.13'
gem 'bootstrap-sass', '2.1'
# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'
gem 'sqlite3'
gem 'mysql'
gem 'activeadmin'
gem "meta_search",    '>= 1.1.0.pre'
gem 'formtastic'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'
  # See https://github.com/sstephenson/execjs#readme for more supported runtimes
  # gem 'therubyracer', :platforms => :ruby
  gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails'
group :development, :test do
  gem 'rspec-rails', '~> 2.11.0'
  gem 'factory_girl_rails', '~> 3.5.0'
  gem 'capybara', '~> 1.1.2'
  gem 'guard-rspec', '~> 1.2.0'
end
# To use ActiveModel has_secure_password
gem 'bcrypt-ruby', '~> 3.0.0'
# To use Jbuilder templates for JSON
# gem 'jbuilder'
# Use unicorn as the app server
# gem 'unicorn'
# Deploy with Capistrano
# gem 'capistrano'
# To use debugger
# gem 'debugger'

Answer 1

active_admin gem使用相同的名称comments。这就是为什么rails生成器不让您创建comments controller。请看这个:github.com/gregbell/active_admin/tree/master/lib/active_admin。在这里可以看到comments目录。因此，最好为控制器使用其他名称，以避免出现问题。

Answer 2

如果你不需要admin部分的注释，那么你可以关闭它。

转到/config/initializers/active_admin.rb，写config.allow_comments = false。一旦完成，您就可以生成控制器，并且不会与active_admin发生冲突。

Answer 3

我刚刚手动创建了comments_controller，它正在工作。active_admin可能是一个问题。我问过一个朋友，但他在active_admin上没有遇到任何这样的问题。所以，我不确定问题是什么，但现在，创建控制器手动工作。