Ruby-on-rails 不知道如何使用 Rails 3.2.0.rc2 构建任务“db:migrate”
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Don't know how to build task 'db:migrate' w/ Rails 3.2.0.rc2
提问by Kyle Decot
I'm attempting to upgrade my Rails application to 3.2.0.rc2 but When I try to do a rake db:migrate --traceI'm now getting the following error message:
我正在尝试将我的 Rails 应用程序升级到 3.2.0.rc2，但是当我尝试执行时，rake db:migrate --trace我现在收到以下错误消息：
DEPRECATION WARNING: The InstanceMethods module inside ActiveSupport::Concern will be no longer included automatically. Please define instance methods directly in ActionController::Base instead. (called from <top (required)> at /Users/Kyle/Desktop/skateparks-web/config/application.rb:4)
rake aborted!
Don't know how to build task 'db:migrate'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2.2/lib/rake/task_manager.rb:49:in `[]'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2.2/lib/rake/application.rb:115:in `invoke_task'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/bin/rake:19:in `load'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/bin/rake:19:in `<main>'
The deprecation warning seems to be in regards to this line in application.rb:
弃用警告似乎与以下行有关application.rb：
Bundler.require(:default, :assets, Rails.env) if defined?(Bundler)
Is this supposed to be removed or changed in the latest version of Rails? I tried removing this line, and running the migrate again. I then no longer get the warning but still get the Don't know how to build task 'db:migrate'error. Any ideas?
是否应该在最新版本的 Rails 中删除或更改？我尝试删除此行，然后再次运行迁移。然后我不再收到警告，但仍然收到Don't know how to build task 'db:migrate'错误。有任何想法吗？
Doing a bundle exec rake -Tyields the following:
执行 a 会bundle exec rake -T产生以下结果：
DEPRECATION WARNING: The InstanceMethods module inside ActiveSupport::Concern will be no longer included automatically. Please define instance methods directly in ActionController::Base instead. (called from <top (required)> at /Users/Kyle/Desktop/skateparks-web/config/application.rb:4)
rake about # List versions of all Rails frameworks and the environment
rake assets:clean # Remove compiled assets
rake assets:precompile # Compile all the assets named in config.assets.precompile
rake cron # This task is called by the Heroku cron add-on
rake doc:app # Generate docs for the app -- also available doc:rails, doc:guides, doc:plugins (options: TEMPLATE=/...
rake friendlyid:rebuild # Updates all User and Skatepark friendly IDs
rake geocode:all # Geocode all objects without coordinates.
rake jobs:work # Alias for resque:work (To run workers on Heroku)
rake log:clear # Truncates all *.log files in log/ to zero bytes
rake middleware # Prints out your Rack middleware stack
rake notes # Enumerate all annotations (use notes:optimize, :fixme, :todo for focus)
rake notes:custom # Enumerate a custom annotation, specify with ANNOTATION=CUSTOM
rake rails:template # Applies the template supplied by LOCATION=(/path/to/template) or URL
rake rails:update # Update configs and some other initially generated files (or use just update:configs, update:scripts...
rake resque:scheduler # Start Resque Scheduler
rake resque:work # Start a Resque worker
rake resque:workers # Start multiple Resque workers.
rake routes # Print out all defined routes in match order, with names.
rake secret # Generate a cryptographically secure secret key (this is typically used to generate a secret for coo...
rake sorcery:bootstrap # Adds sorcery's initializer file
rake spec # Run all specs in spec directory (excluding plugin specs)
rake spec:controllers # Run the code examples in spec/controllers
rake spec:helpers # Run the code examples in spec/helpers
rake spec:lib # Run the code examples in spec/lib
rake spec:mailers # Run the code examples in spec/mailers
rake spec:models # Run the code examples in spec/models
rake spec:rcov # Run all specs with rcov
rake spec:requests # Run the code examples in spec/requests
rake spec:routing # Run the code examples in spec/routing
rake spec:views # Run the code examples in spec/views
rake stats # Report code statistics (KLOCs, etc) from the application
rake sunspot:reindex[batch_size,models] # Reindex all solr models that are located in your application's models directory.
rake sunspot:solr:run # Run the Solr instance in the foreground
rake sunspot:solr:start # Start the Solr instance
rake sunspot:solr:stop # Stop the Solr instance
rake test # Runs test:units, test:functionals, test:integration together (also available: test:benchmark, test:...
rake test:recent # Run tests for {:recent=>"test:prepare"} / Test recent changes
rake test:single # Run tests for {:single=>"test:prepare"}
rake test:uncommitted # Run tests for {:uncommitted=>"test:prepare"} / Test changes since last checkin (only Subversion and...
rake time:zones:all # Displays all time zones, also available: time:zones:us, time:zones:local -- filter with OFFSET para...
rake tmp:clear # Clear session, cache, and socket files from tmp/ (narrow w/ tmp:sessions:clear, tmp:cache:clear, tm...
rake tmp:create # Creates tmp directories for sessions, cache, sockets, and pids
It would appear as if all of my rake dbtasks are missing.
看起来好像我的所有rake db任务都丢失了。
回答by Frederick Cheung
There is something very funky going on with your gem versions. If you look at your gemfile.lock it's using the 3.2.rc2 versions of railties, activesupport and activemodel but the other versions are all over the place ( ar is 1.6, action mailer is 0.6.1 etc).
你的 gem 版本有一些非常时髦的东西。如果您查看 gemfile.lock，它使用的是 3.2.rc2 版本的 railties、activesupport 和 activemodel，但其他版本到处都是（ar 是 1.6，action mailer 是 0.6.1 等）。
I'm not sure how you got into this state, but I'd try either bundle updateor deleting Gemfile.lock and then running bundle install(in theory those 2 are equivalent) and specifying the precise version of rails you want (especially as you're after a prerelease version of rails.)
我不确定你是如何进入这种状态的，但我会尝试bundle update删除 Gemfile.lock 然后运行bundle install（理论上这两个是等效的）并指定你想要的精确版本的 rails（尤其是当你在Rails 的预发布版本。）
回答by Manish Shrivastava
From the command rake db:migrate --trace, the rake tasks are not loaded. , amd you couldn't get the path scheme right.
and running rake -Tlocally list db:migrateas one of the rake tasks? If
not, your rails is misconfigured...
well, I didn't worked with rails 3.2.0rc2 ,but I googled and found some links .
Please refer links below this would help you..
从命令中rake db:migrate --trace，不会加载 rake 任务。，并且您无法正确设置路径方案。并将rake -T本地列表db:migrate作为 rake 任务之一运行？如果没有，你的 rails 配置错误......好吧，我没有使用 rails 3.2.0rc2 ，但我用谷歌搜索并找到了一些链接。请参考下面的链接，这会帮助你..
Rake db:migrate error don't know how to build task
Don't know how to build rake db:migrate on Ubuntu natty
不知道如何在 Ubuntu natty 上构建 rake db:migrate
Problem running rake db:migrate
Let me know how it worked !
让我知道它是如何工作的！
Thanks Frederick, Its interesting post..
谢谢弗雷德里克，它有趣的帖子..
