Ruby China
  • 搬家一大批书半卖半送，最高 3 折，地点回龙观，可能需要自取 at February 05, 2015

    什么时候 = = 恰巧在北京

  • 关于 RubyChina 服务访问慢的一些阐述： at January 20, 2015

    别回去了，现在挺好的

  • ubuntu 终端开启很慢 at January 16, 2015

    突然感觉我的 2~3s 算快的了

  • ActiveRecord 读取记录问题... at January 14, 2015

    #3 楼 @ripple 解决了 thx！

  • ActiveRecord 读取记录问题... at January 14, 2015

    #1 楼 @heylonj 

    NoMethodError - undefined method `username' for #<User::ActiveRecord_Relation:0x000000037468c0>:
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.0/lib/active_record/relation/delegation.rb:136:in `method_missing'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/activerecord-4.2.0/lib/active_record/relation/delegation.rb:99:in `method_missing'
    game.rb:77:in `block in <class:Game>'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1603:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1603:in `block in compile!'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:966:in `[]'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:966:in `block (3 levels) in route!'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:985:in `route_eval'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:966:in `block (2 levels) in route!'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1006:in `block in process_route'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1004:in `catch'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1004:in `process_route'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:964:in `block in route!'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:963:in `each'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:963:in `route!'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1076:in `block in dispatch!'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `block in invoke'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `catch'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `invoke'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1073:in `dispatch!'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:898:in `block in call!'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `block in invoke'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `catch'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1058:in `invoke'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:898:in `call!'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:886:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-protection-1.5.0/lib/rack/protection/xss_header.rb:18:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-protection-1.5.0/lib/rack/protection/base.rb:49:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-protection-1.5.0/lib/rack/protection/base.rb:49:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-protection-1.5.0/lib/rack/protection/path_traversal.rb:16:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-protection-1.5.0/lib/rack/protection/json_csrf.rb:18:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-protection-1.5.0/lib/rack/protection/base.rb:49:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-protection-1.5.0/lib/rack/protection/base.rb:49:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-protection-1.5.0/lib/rack/protection/frame_options.rb:31:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-1.6.0/lib/rack/session/abstract/id.rb:225:in `context'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-1.6.0/lib/rack/session/abstract/id.rb:220:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-1.6.0/lib/rack/nulllogger.rb:9:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/rack-1.6.0/lib/rack/head.rb:13:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/show_exceptions.rb:21:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:180:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:2014:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1478:in `block in call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1788:in `synchronize'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1478:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/thin-1.6.3/lib/thin/connection.rb:86:in `block in pre_process'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/thin-1.6.3/lib/thin/connection.rb:84:in `catch'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/thin-1.6.3/lib/thin/connection.rb:84:in `pre_process'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/eventmachine-1.0.3/lib/eventmachine.rb:1037:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/eventmachine-1.0.3/lib/eventmachine.rb:1037:in `block in spawn_threadpool'
Unexpected error while processing request: undefined method `join' for #<String:0x007fd98855e538>
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/show_exceptions.rb:37:in `rescue in call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/show_exceptions.rb:21:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:180:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:2014:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1478:in `block in call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1788:in `synchronize'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/sinatra-1.4.5/lib/sinatra/base.rb:1478:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/thin-1.6.3/lib/thin/connection.rb:86:in `block in pre_process'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/thin-1.6.3/lib/thin/connection.rb:84:in `catch'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/thin-1.6.3/lib/thin/connection.rb:84:in `pre_process'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/eventmachine-1.0.3/lib/eventmachine.rb:1037:in `call'
    /home/yushao/.rvm/gems/ruby-2.1.5/gems/eventmachine-1.0.3/lib/eventmachine.rb:1037:in `block in spawn_threadpool'
  • sinatra 中计划任务的问题 at January 14, 2015

    #3 楼 @ywjno thx！问题解决了 现在的 rufus-scheduler 创建的时候用.new 取代了.start_new 但是测试还是有点问题... 下面的代码是每秒输出一次 unix 时间。。但输出的结果有时间隔会在 2s

    require 'sinatra'
require 'rufus/scheduler'

configure do
  scheduler = Rufus::Scheduler.new 
  # test
  scheduler.every '1s' do
    puts Time.now.to_i
  end
end

get '/' do
  "start work at #{Time.new.strftime('%Y-%m-%d %H:%M:%S')}"
end

    这是输出的结果

    1421213271
1421213272
1421213273
1421213274
1421213276
1421213277
1421213278
1421213279
1421213280
1421213282
1421213283

    猜想是因为间隔太短。。可是调到了 5s 以后依然这样 

    1421213425
1421213430
1421213436
1421213441
1421213446
1421213451
1421213456
1421213461
  • rails 数据关联的问题 at December 25, 2014

    #6 楼 @nouse 3q,