Latest from ChinaonRails: accesine

Web开发框架Rails和Merb Ruby宣布合二为一 ... 6 replies

accesine — Wed, 24 Dec 2008 16:50:19 +0800

Web开发框架Rails和Merb Ruby宣布合二为一

Merb将合并到Rails 3中，后者预计将在2009年第二季度发布。合并的好处有：Rails模块化，性能改进，更严谨的API，更容易支持DataMapper或Seque等。但同时许多开发者也会担心潜在的社区破裂问题。

http://developers.solidot.org/developers/08/12/24/0135209.shtml

ActiveRecord::ActiveRecordError: Illegal mix of collations ... 1 reply

accesine — Sun, 27 Jul 2008 21:01:14 +0800

ActiveRecord::ActiveRecordError: Illegal mix of collations (gbk_chinese_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation

Twitter 应该放弃 RoR ， Erlang 可以考虑 ... no reply

accesine — Fri, 23 May 2008 10:02:50 +0800

Twitter 不是一个cms系统，是个消息系统

New Facebook Chat Feature Scales to 70 Million Users Using Erlang

http://highscalability.com/new-facebook-chat-feature-scales-70-million-users-using-erlang

windows 上一个rails app 就需要配置一个mongrel吗？ ... 5 replies

accesine — Mon, 19 May 2008 22:48:09 +0800

windows 上一个rails app 就需要配置一个mongrel吗？

如果我有10个rails app，那么就需要10个 mongrel 和10个端口来响应吗？

这个类似如何在 windows上提供rails服务？

twitter 准备抛弃 ruby on rails 了。怎么办？ ... 11 replies

accesine — Wed, 07 May 2008 10:28:33 +0800

twitter 准备抛弃 ruby on rails 了。怎么办？

收到Google app engine 的邀请了 ... 2 replies

accesine — Wed, 07 May 2008 07:25:52 +0800

收到Google app engine 的邀请了

准备小试一下。

一小时内：用rails 开发 SaaS ... 2 replies

accesine — Fri, 25 Apr 2008 09:33:48 +0800

一小时内：用rails 开发 SaaS

试试：http://railskits.com/ 吧

谁在用Ruby开发Facebook application？ ... 8 replies

accesine — Thu, 17 Apr 2008 08:20:13 +0800

一起交流一下：
谁在用Ruby开发Facebook application？

英文url单词间的短横线，用rails是怎么实现的？ ... 3 replies

accesine — Sat, 05 Apr 2008 11:08:27 +0800

英文url单词间的短横线，用rails是怎么实现的？

看到很多英文网站都是这么做的。
比如：

标题：i love you
切换后的url:
www.xxx.com/i-love-you

原理是什么呢？

为降低负载，启用临时的 pure 纯 ruby database 请推荐一下。 ... 2 replies

accesine — Mon, 14 Jan 2008 09:47:56 +0800

为降低负载，启用临时的 pure 纯 ruby database 请推荐一下。

Mongoose 0.2.5 算一个。

其他的呢，大家有使用经验吗？

ruby 如何调用 windows 命令行如 dir ? ... 4 replies

accesine — Tue, 08 Jan 2008 18:05:12 +0800

ruby 如何调用 windows 命令行如 dir ?

InvalidAuthenticityToken rails 2.0 以上错误的排除 ... no reply

accesine — Wed, 02 Jan 2008 13:38:57 +0800

http://feeds.feedburner.com/~r/RyansScraps/~3/160614821/what-s-new-in-edge-rails-better-cross-site-request-forging-prevention

好文章啊

Hot on the heels of the in-depth look at Rails security options comes the addition of the CsrfKiller plugin into rails core.

The CsrfKiller plugin adds a unique session token field to all forms that is checked on every non-GET request. This ensures that the request received is in fact coming from the session of the authorized user (check out wikipedia’s CSRF article if you need more details on the technique).

All you need to do to enable this protection is to add a protect_from_forgery statement in your controller that takes the familiar :except or :only option along with salt to use when generating the unique token:

And now this is the default functionality. No need to specify anything if you want the default behavior. You can still override as in the following examples, however.

12345

class PostsController < ApplicationController protect_from_forgery :secret => '2kdjnaLI8', :only => [:update, :delete, :create] ...end

If you’re already using edge Rails’ default cookie session store then you don’t have to specify the :secret key.

protect_from_forgery :only => [:update, :delete, :create]

If you’re not on a cookie session store you can also change the digest method used to generate the unique token (the default is ‘SHA1’).

protect_from_forgery :secret => '2kaienna9ea90djnaLI8', :digest => 'MD5'

If a request comes in that doesn’t match the request forgery protection token for the current session then an ActionController::InvalidAuthenticityToken exception will be thrown. Perhaps a good place to try out the new exception handling syntax ?
Caveats: The request forgery protection only kicks in in the following scenarios:

* Non-GET requests, so make sure the only requests that modify state are your PUT/POST/DELETE requests.
* On html and ajax requests. Override verifiable_request_format? if you want to expand that.

And what to do if you want to disable CSRF protection? Just add this to whatever controllers you don’t want to be affected:

skip_before_filter :verify_authenticity_token

And if you want to disable this site-wide, just add this to application.rb:

self.allow_forgery_protection = false

领教rails 2.0.1. 的威力: A secret is required to generate an integrity ... 1 reply

accesine — Tue, 11 Dec 2007 19:06:07 +0800

/!\ FAILSAFE /!\ Tue Dec 11 19:04:00 +0800 2007
Status: 500 Internal Server Error
A secret is required to generate an integrity hash for cookie session data. Use config.action_controller.session = { :session_key => "_myapp_session", :secret => "some secret phrase of at least 30 characters" } in config/environment.rb

这个错误怎么解决？

屏蔽了

# config.action_controller.session = {
# :session_key => '_<%= app_name %>_session',
# :secret => '<%= app_secret %>'
# }

还不行

遗留系统的问题：在rails中 has_many 默认的外键名称可以指定吗？set_primary_key ... 2 replies

accesine — Sat, 01 Dec 2007 15:01:09 +0800

has_many 在处理遗留系统的问题 set_primary_key

在rails中 has_many 默认的外键名称可以指定吗？

比如：默认的
belongs_to :programmer # foreign key - programmer_id

我想把 programmer_id 指定成： p_id 可以吗？

class Assignment < ActiveRecord::Base
belongs_to :programmer # foreign key - programmer_id
belongs_to :project # foreign key - project_id
end
class Programmer < ActiveRecord::Base
has_many :assignments
has_many :projects, :through => :assignments
end
class Project < ActiveRecord::Base
has_many :assignments
has_many :programmers, :through => :assignments
end

比如

我心目中理想的rails托管 ... 5 replies

accesine — Fri, 23 Nov 2007 09:08:08 +0800

我心目中理想的rails托管
http://heroku.com/beta
nstantly Live
Create and Edit Online
Share and Collaborate
Generate Code
Painless Migrations
Console

routes.rb 显示 public/images 图片的问题 ... 6 replies

accesine — Wed, 21 Nov 2007 21:27:54 +0800

routes.rb 显示 public/images 图片的问题

我有个 controller 名字叫： images

同时 public 目录有个 images 的文件夹

当我打开：
http://localhost:3000/images/personal_2007-11-21-21-23-23164_200711111826381_thumb.jpg
的时候告诉我：

Unknown action
No action responded to personal_2007-11-21-21-23-23164_200711111826381_thumb.jpg
怎么解决呢？

怪不怪？

cookies 设置失败的问题 ... 2 replies

accesine — Wed, 21 Nov 2007 07:21:47 +0800

cookies 设置失败的问题
cookies['session_id'] = {:value =>session.session_id,
:expires =>30.days.from_now,
:domain => '.example.com'
}
这样设置 cookie 总是失败。

cookies['session_id'] = session.session_id

就可以成功！！

大家知道怎么回事情吗？

Jruby ON JEE 占用内存大的原因及解释 ... 5 replies

accesine — Wed, 26 Sep 2007 11:02:04 +0800

我运行 jruby on rails on tomcat 和 resin 都发现内存占用巨大的问题。

重于找到原因了

Jon Tirsen曾经谈到JRuby的一个问题，运行在AppServer中会有占用太多内存。经过分析得知，为了提高程序的并发性，程序运行会启动多个 JRuby。每个JRuby解析Ruby脚本都会建立一棵完整的语法树，这就意味着，由于这种解析模式本身的限制，对于同样的内容，内存中需要保存多份相同的语法树，这种做法意味着无谓的耗用了大量的内存。采用编译的做法，则可以很好的避免这个问题。因为在运行时，相同的是字节码，而JVM很好的帮我们解决字节码共享问题，无需耗用大量的内存。

Jruby 部署到 tomcat 时 ,rake 无法打包 ... 5 replies

accesine — Fri, 21 Sep 2007 08:00:45 +0800

Jruby 部署到 tomcat 时 ,rake 无法打包

rake war:standalone:create

压根就是不能识别的命令啊啊？

有成功用rake打包的人吗？

mongrel Too many open files ... 2 replies

accesine — Thu, 30 Aug 2007 19:17:24 +0800

mongrel Too many open files

怎么办啊？》

难道要不停的重新启动服务？

X:/ruby/bin/mongrel_rails:16:in `load'

X:/ruby/bin/mongrel_rails:16
Too many open files

X:/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/vendor/mysql.rb:108:in `initialize'

X:/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/vendor/mysql.rb:108:in `new'

X:/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/vendor/mysql.rb:108:in `real_connect'

X:/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/mysql_adapter.rb:330:in `connect'

X:/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/mysql_adapter.rb:164:in `reconnect!'

X:/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/abstract_adapter.rb:85:in `verify!'

X:/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/abstract/connection_specification.rb:99:in `verify_active_connections!'

X:/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/abstract/connection_specification.rb:98:in `each_value'

X:/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/abstract/connection_specification.rb:98:in `verify_active_connections!'

X:/ruby/gems/1.8/gems/rails-1.1.6/lib/dispatcher.rb:70:in `prepare_application'

X:/ruby/gems/1.8/gems/rails-1.1.6/lib/dispatcher.rb:37:in `dispatch'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel/rails.rb:78:in `process'

X:/ruby/1.8/thread.rb:135:in `synchronize'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel/rails.rb:76:in `process'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel.rb:618:in `process_client'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel.rb:617:in `each'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel.rb:617:in `process_client'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel.rb:736:in `run'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel.rb:736:in `initialize'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel.rb:736:in `new'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel.rb:736:in `run'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel.rb:720:in `initialize'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel.rb:720:in `new'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel.rb:720:in `run'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel/configurator.rb:271:in `run'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel/configurator.rb:270:in `each'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel/configurator.rb:270:in `run'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/bin/mongrel_rails:127:in `run'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel/command.rb:211:in `run'

X:/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/bin/mongrel_rails:243