kaka (huxinghai)

周末瞎折腾 spring 的坑

kaka — Sun, 21 Dec 2014 14:00:50 +0800

上比较诡异的图吧之前一个同事遇到的问题，不管你怎么改 config/secrets.yml 配置文件，用 Rails.application.secrets 访问还时初始化的配置，结束 rails c 重新运行也一样，后来跟踪了一下源码发现 gem 包 spring 做了处理。

简单的介绍 spring

它帮我们在本地开发的命令 (rails console, rails generate, rails runner) 做预加载动作，在我们初始打开终端运行这些命令的时候 spring 会在后台启动一个服务，当我们第二次运行这些命令时就不会重复加载 Rails.application.initializers，这样运行速度会快很多，你可以在你的项目目录运行bin/spring status下查看状态，当我们改动 spring watcher 的一些文件时候 spring 服务会自动 reload.

所以上面这个问题是因为这个 spring 的版本 1.1.3 它没有对 secrets.yml 进行 watch 所以改动时 spring 不会重新 reload, 把 spring 的版本更新 1.2.0 就可以了。

还有在 rails c 运行Spring.watcher.send(:expanded_files)查看 watcher 的文件列表，也可以手动加一些文件 watcher。

下次童鞋们遇见这坑就不会陌生了

rails readonly 使用问题求解!

kaka — Thu, 23 May 2013 13:54:02 +0800

Order 模型里的一个方法

def self.state_expired
       orders = joins('left join dom on dom.id=order.dom_id').where('dom.state=?', true).readonly(false)
       orders.each{|o| puts o.readonly? }
       orders
end

Order.state_expired 输出结果多是 true

Order.state_expired.readonly(false).each{|o| puts o.readonly? }

输出结果多是

false

为什么在方法调用之后 readonly 才生效

请教 ruby 的正则表达式可以换行吗

kaka — Sat, 13 Apr 2013 17:39:38 +0800

如果一行的情况下是可以匹配的

/(?:\s|^)((?:http:\/\/|www.|https:\/\/|ftp:\/\/|\w+-?\.?\w+)\w+-?\.?\w+\.(?:#{suffix})(?:\/\w+-?\.?\w+)*)(?:\s|$)/

但是换行的话就匹配不了

/(?:\s|^)
   ((?:http:\/\/|www.|https:\/\/|ftp:\/\/|\w+-?\.?\w+)
    \w+-?\.?\w+\.(?:#{suffix})
(?:\/\w+-?\.?\w+)*)(?:\s|$)/

大家换行是怎样做的啊...

jquery-atwho.js 这里是不是有点问题！

kaka — Tue, 05 Mar 2013 17:22:53 +0800

使用 requirejs 调用 jquery-atwho 时出错

 (function(factory) {
    if (typeof exports === 'object') {
      return factory(require('jquery'));
    } else if (typeof define === 'function' && define.amd) {
      //这里怎么没有调用factory,应该是factory(require('jquery'))
      return define(['jquery']);
    } else {
      return factory(window.jQuery);
    }
  })(function($) {
    var getCaretPos, setCaretPos;
    ....
})

ActiveRecord 得 find 有缓存嘛？

kaka — Fri, 14 Dec 2012 15:18:32 +0800

难道 find 有缓存

rvm install ruby 1.9.3 安装失败，求帮助！

kaka — Sat, 12 May 2012 12:24:03 +0800

Error running 'make ', please read /home/kaka/.rvm/log/ruby-1.9.3-p125/make.log

There has been an error while running make. Halting the installation.

make.log 文件内容

linking shared-object openssl.so
/usr/bin/ld: /usr/local/lib/libssl.a(s2_meth.o): relocation R_X86_64_32 against `.data' can not be used when making a shared object; recompile with -fPIC
/usr/local/lib/libssl.a: could not read symbols: Bad value
collect2: ld 返回 1
make[2]: *** [../../.ext/x86_64-linux/openssl.so] 错误 1
make[2]:正在离开目录 `/home/kaka/.rvm/src/ruby-1.9.3-p125/ext/openssl'
make[1]: *** [ext/openssl/all] 错误 2
make[1]:正在离开目录 `/home/kaka/.rvm/src/ruby-1.9.3-p125'
make: *** [build-ext] 错误 2

rvm ruby 1.9.2 正常

capistrano 部署求助

kaka — Tue, 10 Apr 2012 13:43:05 +0800

require "bundler/capistrano" bundle exec rake RAILS_ENV=production RAILS_GROUPS=assets assets:precompile 在执行 bundel exec cap deploy 这个任务的时候想加入 rake 的 trace 参数....

set :application, "dom1"
set :user,"root"
set :password,"321654"
set :repository,  "git@github.com:huxinghai1988/capistrano_dom"
set :domain,"192.168.2.27"

default_run_options[:pty] = true 
set :use_sudo,false
set :scm, "git"
set :scm_user,"root"
set :scm_passphrase,"huxinghai"
set :deploy_to,"/var/www/#{application}"
set :branch, "master"
set :rails_env, 'production'

role :web, domain                          
role :app, domain                        
role :db,  domain, :primary => true

set :rvm_path,"/usr/local/rvm"
set :rvm_bin_path,"/usr/local/rvm/bin"
set :rvm_ruby_string,'ruby-1.9.2'

require 'rvm/capistrano'
require 'bundler/capistrano'

before 'deploy:setup' do
    run 'echo insecure > ~/.curlrc', :shell => 'bash -c'
    find_and_execute_task "rvm:install_rvm"
    find_and_execute_task 'rvm:install_ruby'
end

load 'deploy/assets'

rspec 使用 factory 出错! 求助

kaka — Thu, 08 Mar 2012 14:25:33 +0800

#encoding: utf-8

FactoryGirl.define do
    factory :product do
    end

    factory :iPhone4, parent: :product do
        name "iPhone 4"
        price BigDecimal.new("5999")
    end 

    factory :iPoad2, parent: :product do
        name "iPoad 2"
        price BigDecimal.new("3999")
    end

    factory :psP1, parent: :product do
        name "psp1"
        price BigDecimal.new("2000")
    end
end

使用 Factory(:iPhone4) 时出现 NoMethodError Exception: undefined method `delete' for nil:NilClass

其它的 Factory 正常，难道是 Product 模型里出问题！请各位帮忙谢谢 !

分享 mac 上的好东西 powder

kaka — Tue, 07 Feb 2012 18:43:57 +0800

https://github.com/rodreegez/powder

nginx + passenger 部署 rails 3.2.1 出问题求助!

kaka — Mon, 06 Feb 2012 13:05:42 +0800

这个是不是项目的路由设置问题....

有那些朋友用 rspec 测试框架

kaka — Wed, 18 Jan 2012 17:32:53 +0800

rspec 它有那些优点

nginx + passenger 配置不成功,请各位帮忙!!

kaka — Tue, 03 Jan 2012 20:57:20 +0800

kakamatoiMac:/ kaka$ sudo nginx -t
Password:
nginx: [emerg] unknown directive "passenger_root" in /usr/local/nginx/conf/nginx.conf:18
nginx: configuration file /usr/local/nginx/conf/nginx.conf test failed

nginx.conf 18 行

passenger_root /Users/kaka/.rvm/gems/ruby-1.9.2-p290/gems/passenger-3.0.11;
passenger_ruby /Users/kaka/.rvm/wrappers/ruby-1.9.2-p290/ruby;

这个错误是我的 passenger 没有配置好吗？新手求解谢谢

nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: [alert] Unable to start the Phusion Passenger watchdog because its executable (/Users/kaka/.rvm/gems/ruby-1.9.2-p290/gems/passenger-3.0.11/agents/PassengerWatchdog) does not exist. This probably means that your Phusion Passenger installation is broken or incomplete, or that your 'passenger_root' directive is set to the wrong value. Please reinstall Phusion Passenger or fix your 'passenger_root' directive, whichever is applicable. (-1: Unknown error)
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

sublime 编辑器

kaka — Fri, 30 Dec 2011 17:16:45 +0800

sublime 怎么样啊！

memcached 与 redis 有没有快捷启动方式

kaka — Sat, 24 Dec 2011 11:01:18 +0800

不想每次启动时输入命令与相关参数. 求教! thank you

ruby-china 安装遇到问题，请高手解答！

kaka — Wed, 30 Nov 2011 17:15:37 +0800

执行 rake assets:precompile Could not load SystemTimer >= v1.2.0. Falling back to timeout.rb. SystemTimer is STRONGLY recommended for timeouts in Ruby 1.8.7. See http://ph7spot.com/blog/system-timer-1-2-release for details. WARNING: using the built-in Timeout class which is known to have issues when used for opening connections. Install the SystemTimer gem if you want to make sure the Redis client will not hang. /home/administrator/ruby-china/vendor/cache/ruby/1.8/bundler/gems/bootstrap-rails-7fe2d48ef0b0/lib/bootstrap-rails/version.rb:3: warning: already initialized constant VERSION rake aborted! uninitialized constant YAML::ENGINE