優雅中止rake任務

namespace:db do 
    desc "Populates Database" 
    task :populate => :environment do 

    error = true 

    if error 
     puts "Error Code 1: There was an error!" 
     return false 
    end 

end

運行優雅中止rake任務

rake db:migrate

確實導致預期的結果：

Error Code 1: There was an error! 
rake aborted! 
unexpected return

但隨後：

/home/james/Documents/fertilizer/fertilizer/lib/tasks/custom.rake:131:in `block (3 levels) in <top (required)>' 
/home/james/Documents/fertilizer/fertilizer/lib/tasks/custom.rake:104:in `each' 
/home/james/Documents/fertilizer/fertilizer/lib/tasks/custom.rake:104:in `block (2 levels) in <top (required)>' 
/home/james/.rvm/gems/ruby-2.0.0-p247/bin/ruby_executable_hooks:15:in `eval' 
/home/james/.rvm/gems/ruby-2.0.0-p247/bin/ruby_executable_hooks:15:in `<main>' 
Tasks: TOP => db:fertilize7 
(See full trace by running task with --trace) 
[email protected]:~/Documents/fertilizer/fertilizer$ rake db:fertilize7 
rake aborted! 
/home/james/Documents/fertilizer/fertilizer/lib/tasks/custom.rake:549: syntax error, unexpected end-of-input, expecting keyword_end 
/home/james/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:222:in `load' 
/home/james/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:222:in `block in load' 
/home/james/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency' 
/home/james/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:222:in `load' 
/home/james/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/engine.rb:641:in `block in run_tasks_blocks' 
/home/james/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/engine.rb:641:in `each' 
/home/james/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/engine.rb:641:in `run_tasks_blocks' 
/home/james/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/application.rb:244:in `run_tasks_blocks' 
/home/james/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/engine.rb:446:in `load_tasks' 
/home/james/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:30:in `method_missing' 
/home/james/Documents/fertilizer/fertilizer/Rakefile:6:in `<top (required)>' 
/home/james/.rvm/gems/ruby-2.0.0-p247/bin/ruby_executable_hooks:15:in `eval' 
/home/james/.rvm/gems/ruby-2.0.0-p247/bin/ruby_executable_hooks:15:in `<main>' 
(See full trace by running task with --trace) 
[email protected]:~/Documents/fertilizer/fertilizer$

我怎樣才能擺脫所有的錯誤報告，報告意外的回報？它分散了真正的錯誤信息（「錯誤代碼1：出現錯誤！」）。

來源

2013-10-12 Starkers

你的方法是不是，你是在一個進程內。你不能返回，你應該next跳出PROC代替。

error = true 

if error 
    puts "Error Code 1: There was an error!" 
    next 
end

來源

2013-10-12 13:12:40 meagar

優雅中止rake任務

回答

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