使用Rake 0.9.0的未定义方法'任务'

Question

我刚刚将Rake更新到最新版本(0.9.0.beta.4),该rake命令最终出现以下错误消息:

rake aborted!
undefined method `task' for #<Anelis::Application:0x9223b6c>

这是跟踪:

undefined method `task' for #<Anelis::Application:0x97ef80c>
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.3/lib/rails/application.rb:214:in `initialize_tasks'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.3/lib/rails/application.rb:139:in `load_tasks'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.3/lib/rails/application.rb:77:in `method_missing'
/home/amokrane/Documents/prog/web/learning_rails/anelis/Rakefile:7:in `load_string'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/rake-0.9.0.beta.4/lib/rake/environment.rb:28:in `eval'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/rake-0.9.0.beta.4/lib/rake/environment.rb:28:in `load_string'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/rake-0.9.0.beta.4/lib/rake/environment.rb:16:in `load_rakefile'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/rake-0.9.0.beta.4/lib/rake/application.rb:495:in `raw_load_rakefile'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/rake-0.9.0.beta.4/lib/rake/application.rb:78:in `block in load_rakefile'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/rake-0.9.0.beta.4/lib/rake/application.rb:129:in `standard_exception_handling'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/rake-0.9.0.beta.4/lib/rake/application.rb:77:in `load_rakefile'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/rake-0.9.0.beta.4/lib/rake/application.rb:61:in `block in run'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/rake-0.9.0.beta.4/lib/rake/application.rb:129:in `standard_exception_handling'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/rake-0.9.0.beta.4/lib/rake/application.rb:59:in `run'
/usr/local/rvm/gems/ruby-1.9.2-p136/gems/rake-0.9.0.beta.4/bin/rake:31:in `<top (required)>'
/usr/local/rvm/gems/ruby-1.9.2-p136/bin/rake:19:in `load'
/usr/local/rvm/gems/ruby-1.9.2-p136/bin/rake:19:in `<main>'

有人经历过同样的问题吗？什么可能是错的？请注意,我正在运行Rails 3.0.3,您可能也对我的Gemfile的内容感兴趣:

source 'http://rubygems.org'
gem 'rails', '3.0.3'
gem 'sqlite3-ruby', :require => 'sqlite3'
gem 'mysql2'
gem 'legacy_data'
gem 'resources_controller', :git => 'git://github.com/ianwhite/resources_controller'
gem 'will_paginate', '3.0.pre' # pagination
gem 'jquery-rails', '>= 0.2.6'
gem "rmagick" # sudo aptitude install libmagick9-dev
gem "paperclip", "~> 2.3"
gem "nested_form", :git => "git://github.com/madebydna/nested_form.git"
gem "meta_search"
gem "hirb"
gem "devise"
gem "rails_admin", :git => "git://github.com/sferik/rails_admin.git"

我该如何解决这个问题？

Answer 1

正如mordaroso的回答中所解释的那样,Rake 0.9.0存在问题.您需要暂时降级Rake以避免它:

1. 运行:( 除非你使用gem uninstall rake -v 0.9添加)sudorvm

2. 添加到您的Gemfile: gem 'rake', '~> 0.8.7'

3. 然后运行: bundle update

你可以跳过第一步,但你必须运行rake使用bundle exec,例如:

bundle exec rake db:migrate

否则您会收到以下错误.

rake aborted!
You have already activated rake 0.9.0, but your Gemfile requires rake 0.8.7. Consider using bundle exec.

更新

正如Alex Chaffee在评论Pablo Cantero的回答中注意到的那样,如果你仍然看到问题,你可能需要执行以下操作来卸载Rake

rvm use @global && gem uninstall rake -v 0.9.0
rvm use @       && gem uninstall rake -v 0.9.0

也尝试杜克答案中建议的解决方案.

Answer 2

运行0.9.0.beta.4版本的Rake时,我遇到了同样的异常.看起来新Rake::DSL的没有正确加载.

所以我在我的Rakefile中添加了以下代码:

require 'rake'

# Rake Fix Code start
# NOTE: change 'Anelis' to your app's module name (see config/application.rb)
module ::Anelis
  class Application
    include Rake::DSL
  end
end

module ::RakeFileUtils
  extend Rake::FileUtilsExt
end
# Rake Fix Code end

MyApp::Application.load_tasks

这样我就可以再次运行我的Rake任务.

我知道这不是一个优雅的解决方案.但是如果你必须使用--preRake版本,那么使用这个快速黑客可能是正确的.

Answer 3

注意:这只是在Rails 3.0.8中修复的

Rake的新版本不再将其DSL命令(任务,文件,desc,导入等)放在Object命名空间的根目录中(将它们放在Object中意味着每个对象都有一个任务命令,不是很好.DSL可以通过将命令混合Rake::DSL module到需要命令的任何模块中来获得命令.

在Ruby on Rails更新以使用Rake 0.9.x之前,在"require rake"之后和调用之前将以下内容放在项目Rakefile中Application.load_tasks:

class Rails::Application
  include Rake::DSL if defined?(Rake::DSL)
end

Answer 4

我为rails_admin创建了一个关于同样错误的问题.

答案是:

这是一般的Rails问题:http://twitter.com/dhh/status/71966528744071169

应该会很快发布3.0.8版本.同时,您可以将以下行添加到Gemfile:

宝石'耙','〜> 0.8.7'

这是Rake(0.9.0)中的一个问题,它是由DHH在Twitter上宣布的.

昨天发布的Rake 0.9打破了Rails(和其他人).当我们等待修复时,你需要Gemfile中的gem'rake','0.8.7'.

Answer 5

这已在Ruby on Rails 3.0.8.rc1中修复,应在几天后发布.