Question

我创建了一个处理联系表单的简单模型：

 class ContactForm
   include ActiveAttr::Model

  attribute :name
  attribute :email
  attribute :message

  attr_accessible :name, :email, :message

  validates_presence_of :name, :email, :message
  validates_format_of :email, :with => /^[-a-z0-9_+\.]+\@([-a-z0-9]+\.)+[a-z0-9]    {2,4}$/i
end

它在开发环境中运行正常，但在生产服务器上给出了一个错误，登录了unicorn日志：

E, [2013-01-26T18:15:42.724973 #8940] ERROR -- : uninitialized constant ContactForm::ActiveAttr (NameError)

的Gemfile

source 'https://rubygems.org'

gem 'rails', '3.2.11'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

gem 'pg'
gem 'bootstrap-sass'
gem 'font-awesome-sass-rails'
# gem 'acts_as_tree', :git => 'git://github.com/amerine/acts_as_tree.git'
gem 'closure_tree'
gem 'kaminari'
gem 'friendly_id'
gem 'slim'
gem 'gmaps4rails'
gem 'devise'
gem 'omniauth'
gem 'oauth2'
gem 'omniauth-facebook'
gem 'omniauth-twitter'
gem 'simple_form'
gem 'pg_search'
gem 'stamp'
gem 'acts-as-taggable-on', '~> 2.3.1'
gem 'rmagick'
gem 'carrierwave'
gem 'active_attr'
gem 'select2-rails'
# gem 'roo'

# 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'
  gem 'compass-rails'
end

group :development do 
  gem "better_errors"
  gem "binding_of_caller"
  gem 'guard'
  gem 'letter_opener'
end

group :test do 
  gem 'minitest'
end

gem 'jquery-rails'

# 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'

gem 'bullet', :group => :development
gem 'rack-mini-profiler'

Answer 1

我遇到了同样的问题，我的修复是在active_attr中指定gemfile的版本。

gem 'active_attr', '0.7.0'

我在GitHub上发现了一个问题，其他人遇到了同样的问题here。

Answer 2

我在开发环境中遇到同样的问题。我按照这个循序渐进的教程https://github.com/thomasklemm/email_form_rails。

当我尝试在控制台中创建新消息时，我得到：

m=Message.new
NameError: uninitialized constant Message::ActiveAttr

我使用Rails 3.2.1，active_attributes gem版本是0.0.1。

修改

我的错，似乎我在安装宝石（不是好宝石）时犯了错误

从中更改gemfile gem'active_attributes'，'0.0.1'

要 gem'active_attr'，'0.0.7'

现在似乎有效......

ActiveAttr停止在生产服务器上工作

2 个答案: