Ruby on Rails 및 Rake 문제 : 초기화되지 않은 상수 Rake :: DSL

Ruby on Rails 및 Rake 문제 : 초기화되지 않은 상수 Rake :: DSL

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정말 실망스러운 문제가 있습니다. 레이크 가 멍청합니다.

문제가 발생하는 방법은 다음과 같습니다.

$ rails new test_app
$ rails generate scaffold new_scaffold field1:string field2:text

둘 다 잘 작동하지만 내가이 작업을하면

$ rake db:migrate

다음과 같은 오류가 발생합니다.

(in /home/mikhail/test_app)
rake aborted!
uninitialized constant Rake::DSL
/usr/lib/ruby/1.9.1/rake.rb:2482:in `const_missing'
/usr/lib/ruby/gems/1.9.1/gems/rake-0.9.0/lib/rake/tasklib.rb:8:in `<class:TaskLib>'
/usr/lib/ruby/gems/1.9.1/gems/rake-0.9.0/lib/rake/tasklib.rb:6:in `<module:Rake>'
/usr/lib/ruby/gems/1.9.1/gems/rake-0.9.0/lib/rake/tasklib.rb:3:in `<top (required)>'
/usr/lib/ruby/gems/1.9.1/gems/rake-0.9.0/lib/rake/rdoctask.rb:20:in `require'
/usr/lib/ruby/gems/1.9.1/gems/rake-0.9.0/lib/rake/rdoctask.rb:20:in `<top (required)>'
/usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks/documentation.rake:1:in `require'
/usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks/documentation.rake:1:in `<top (required)>'
/usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks.rb:15:in `load'
/usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks.rb:15:in `block in <top (required)>'
/usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks.rb:6:in `each'
/usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/tasks.rb:6:in `<top (required)>'
/usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/application.rb:214:in `require'
/usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/application.rb:214:in `initialize_tasks'
/usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/application.rb:139:in `load_tasks'
/usr/lib/ruby/gems/1.9.1/gems/railties-3.0.7/lib/rails/application.rb:77:in `method_missing'
/home/mikhail/test_app/Rakefile:7:in `<top (required)>'
/usr/lib/ruby/1.9.1/rake.rb:2373:in `load'
/usr/lib/ruby/1.9.1/rake.rb:2373:in `raw_load_rakefile'
/usr/lib/ruby/1.9.1/rake.rb:2007:in `block in load_rakefile'
/usr/lib/ruby/1.9.1/rake.rb:2058:in `standard_exception_handling'
/usr/lib/ruby/1.9.1/rake.rb:2006:in `load_rakefile'
/usr/lib/ruby/1.9.1/rake.rb:1991:in `run'
/usr/bin/rake:31:in `<main>'

인터넷에서 비슷한 / 같은 오류가 있는지 살펴 봤는데 사람들은 그 오류를 보았습니다. 아무도 문제를 해결하지 못하는 것 같습니다!

이 문제를 어떻게 해결합니까?

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앞서 DHH 의 트윗 . Rake .9.0은 Rails와 다른 몇 가지를 깨뜨립니다.

gem "rake", "0.8.7"

Gemfile에

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나는 이전 답변 직후에 약간의 연구를했습니다 (죄송합니다, 전에해야합니다).

모든 문제는 Rake gem 0.9.2로 해결되었습니다. 다음 단계를 수행했습니다.

• 설치했습니다 gem install rake -v=0.9.2(0.9.1 보석이있었습니다)
• 와 0.9.1을 제거 gem uninstall rake -v=0.9.1
• 로 업데이트 bundle update

• 그런 다음 db:migrate경고를 표시WARNING: Global access to Rake DSL methods is deprecated. Please....

  Rake 파일에 다음을 추가하여 해결되었습니다.

  module ::YourApplicationName  
    class Application
      include Rake::DSL
    end
  end
  

• module ::RakeFileUtils extend Rake::FileUtilsExtend@databyte에 의해 제안 된 옵션을 생략했습니다 .

그것은 레이크 보석 0.9.2가 잘 작동한다는 것을 의미합니다!

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Railstutorial 2 장 (demo_app)을 살펴보고이 문제에 부딪쳤다. 여기에 나열된 다른 모든 답변을 시도했지만이 작업을 수행 할 때까지 작동하지 못했습니다.

위의 Rakefile에 'rake'가 필요합니다.

require 'rake/dsl_definition'

VIA는 어떻게 Heroku가에 초기화되지 않은 일정 레이크 :: DSL의 문제를 해결하기 위해?

또한 모든 파일을 다시 커밋하고 Github와 Heroku로 푸시했습니다.

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내가해야 할 일은 사용이었습니다.

gem install rake

0.9.2 버전이 이미 설치되어 있어야합니다.

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레이크 보석을 다시 설치하고 그것을 해야 잘 작동 :

gem uninstall rake -v=0.9.2 
gem install rake -v=0.9.2

그렇지 않은 경우 Gemfile에 '0.8.7'버전을 지정하십시오.

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번 들러를 사용하지 않는 경우 :

sudo gem install rake -v 0.8.7
sudo gem uninstall rake

Then choose to uninstall 0.9.0.

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If like me you're stuck on rake 0.8.7, and you're using Rails 3.2.x then railties adds a requirement for Rake::DSL

To solve this, to the top of your Rakefile you should add:

module Rake
  module DSL
  end
end

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I solved the same problem with the following steps:

In Gemfile:

gem 'rake', '0.9.2'

Then ran this on the console:

sudo bundle update rake

Then added the following lines to Rakefile:

require 'rake/dsl_definition'
include Rake::DSL

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Rails 3.1.rc1 has been updated. For your own Rakefiles, you can add this before the call to load_tasks.

module ::YourApplicationName
  class Application
    include Rake::DSL
  end
end

module ::RakeFileUtils
  extend Rake::FileUtilsExt
end

https://gist.github.com/4cd2bbe68f98f2f0249f

UPDATE: Also noticed it's already answered here as well: Undefined method 'task' using Rake 0.9.0

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I had the same issue and had to use the rake 0.8.7 gem instead of 0.9.0.

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I am a Windows XP user and I had the same problem.

I entered gem "rake", "0.8.7" into the gemfile, and then typed the following from the command window.

bundle update rake

This fixed my problem.

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1. Go to your project path
2. Type bundle install --path=vendor/bundle
3. Type bundle exec rake db:migrate

To start server type bundle exec rails s. Use bundle exec and you will be sure that you use right gems (required version) for your project. Also I would recommend you to add vendor/bundle to .gitignore if you use git and make alias for bundle exec. If you use zsh you can follow this approach

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Same as Branstar above - thanks Branstar!

• OS: Windows Vista
• Level: Completely new to Ruby on Rails
• I already had Ruby 1.9.2 installed

I followed the instructions in Running Rails 3 on Windows.

All worked up until the "rake db:migrate" part which gave me the same output as original post.

I ran:

gem install rake

I ran again:

rake db:migrate

Then I was able to start the Ruby on Rails server and had everything in place.

Thanks again Branstar :-)

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I feel for you (mikhailvs), it's really frustrating. I have been going crazy for almost one full day. I even uninstalled Ruby and all its dependent files and shutdown my PC, but I still got the same problem.

What I got from the error message is the problem with Rake 0.9.2. It seems like it wasn’t fully installed. So I had to reinstall gem install rake -v=0.9.2

I wasn’t sure if I have rake –v0.9.1 installed. So to make sure I’m safe I tried to remove that old version with gem uninstall rake -v=0.9.1. But is showed me the error message

ERROR:  While executing gem ... (Gem::InstallError)
    cannot uninstall, check `gem list -d rake`

OK, so I checked all Rake directories on my PC, and found I only had Rake 0.9.2. Then to check if everything went alright, I migrated with rake db:migrate. And it worked :)

I think I didn’t have Rake 0.9.1 because I clean-installed Ruby (rubyinstaller-1.9.2-p180 - on my Windows 7 system) and all gems as well. In the meantime Rake 0.9.2 wasn’t fully installed.

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Uninstalling with "gem uninstall rake" worked for me, I had 2 versions installed, so I jest did a clean reinstall.

"rake db:create", to make sure the database exists and then "rake db:migrate" to seal the deal.

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I had the same issue using Rake 0.9.2.2. I solved this problem by using bundle exec.

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For Rails 2.3 editing lib/tasks/rspec.rake like in this commit worked for me:

https://github.com/dchelimsky/rspec-rails/pull/11/files

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Install rake 0.8.7 and uninstall 0.9.2.2

$ gem install rake -v 0.8.7
$ gem uninstall rake -v 0.9.2.2

Now use

$ bundle exec rake db:migrate

i think this will help you ;)

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Run

bundle exec rake db:migrate

it works for me.

참고URL : https://stackoverflow.com/questions/6085610/ruby-on-rails-and-rake-problems-uninitialized-constant-rakedsl