Rails生成控制器注释抛出错误

Question

I am trying to generate comments controller using rails generate command but it is giving a weird error:-

$ 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.

I have checked but I don't have a comment controller. These are the commands I have tried:-

$ 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

Plz help me out here.

This is the 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 is using the same name comments . That is why rails generator not letting you to create comments controller . See this: github.com/gregbell/active_admin/tree/master/lib/active_admin. Here you can see comments directory. So it is better to use some other name for your controller to avoid problems.

Answer 2

If you do not need the comments in your admin section then you can turn it off.

Go to /config/initializers/active_admin.rb and write config.allow_comments = false . Once this is done you can generate your controller and there will be no conflict with active_admin.

You can read active admin documentation for more information.

Answer 3

I just created the comments_controller manually and it is working. active_admin might be an issue. I asked a friend but he did not face any such problems with active_admin . So, I am not sure what the problem was but right now, creating the controller manually works.