一些gem的简要翻译（欢迎提出问题共同讨论）

写这篇文章主要有两方面用途

1.希望给rails同行一定的帮助，翻译水平有限，贴出中英文，翻译有误的地方欢迎指正，非常感谢，转载请标明出处，谢谢。

2.加深作者对gem的理解，有需要更详细了解安装以及使用的朋友可以点击文章中的链接进入gem sources详细介绍。

3.不定期更新

一.mjackson/rack-accept

版本：0.4.5

Rack::Accept is a suite of tools for Ruby/Rack applications that eases the complexity of building and interpreting the Accept* family of HTTP request headers.

Some features of the library are:

• Strict adherence to RFC 2616, specifically section 14
• Full support for the Accept, Accept-Charset, Accept-Encoding, and Accept-Language HTTP request headers
• May be used as Rack middleware or standalone
• A comprehensive test suite that covers many edge cases

Rack::Accept是一套Ruby/Rack应用的工具，该工具简化了建立应用的复杂性，解释了可接受的Http请求头系列。本库的一些功能如下：

1.严格遵守RFC 2616,具体请看section 14

　　 2.全面支持1中的Accept, Accept-Charset, Accept-Encoding, 和Accept-Language HTTP请求头。

　　 3.可以独立使用或者用做RACK中间件

　　 4.拥有一个很全面的测试套间，涵盖了许多边缘情况

二.dkubb/descendants_tracker

版本：0.0.4

Small module to track descendants in an unobtrusive way.

一些不显眼的方式追踪派生类的模块

三.slim-template/html2slim

Script for converting HTML and ERB files to slim (slim-lang.org).

It's not perfect, but certainly it helps a lot!

It's based on Hpricot. Yeah, I'm old school.

本gem是把HTML和ERB文件转换为silm模板语言的脚本，想了解slim的出门右转（slim-lang.org）

它不完美，但是无疑能帮助你很多！

它基于Hprico。呵呵，我是一个老司机。

四.rails/sass-rails

Official Ruby-on-Rails Integration with Sass

This gem provides official integration for Ruby on Rails projects with the Sass stylesheet language.

官方Ruby-on-Rails集成Sass

本gem提供Ruby on Rails与Sass语言的官方集成

五.lautis/uglifier

Uglifier minifies JavaScript files by wrapping UglifyJS to be accessible in Ruby

本gem压缩JavaScript文件包装为UglifyJS来访问ruby。

六.slim-template/slim-rails

 

slim-rails provides Slim generators for Rails 3 and 4. It was based on haml-rails and it does basically the same:

• Any time you generate a controller or scaffold, you'll get Slim templates (instead of ERB)
• When your Rails application loads, Slim will be loaded and initialized automatically
• Slim templates will be respected by the view template cache digestor

slim_rails提供了为Rails3和Rails4的Slim语言生成器，它基于haml-rails，而且他们特点基本上是相同的，如下：

　  1.无论何时何地你用rails生成了一个控制器或者脚手架，你都会得到Slim语言的模板（替代ERB，因此ERB文件就消失了）。

　  2.当你加载Rails应用时，Slim将会自动初始化和加载。

　  3.当访问缓存器的时候，Slim模板将会被慎重对待。

七.plataformatec/devise

This README is also available in a friendly navigable format.

Devise is a flexible authentication solution for Rails based on Warden. It:

• Is Rack based;
• Is a complete MVC solution based on Rails engines;
• Allows you to have multiple models signed in at the same time;
• Is based on a modularity concept: use only what you really need.

It's composed of 10 modules:

• Database Authenticatable: encrypts and stores a password in the database to validate the authenticity of a user while signing in. The authentication can be done both through POST requests or HTTP Basic Authentication.
• Omniauthable: adds OmniAuth (https://github.com/intridea/omniauth) support.
• Confirmable: sends emails with confirmation instructions and verifies whether an account is already confirmed during sign in.
• Recoverable: resets the user password and sends reset instructions.
• Registerable: handles signing up users through a registration process, also allowing them to edit and destroy their account.
• Rememberable: manages generating and clearing a token for remembering the user from a saved cookie.
• Trackable: tracks sign in count, timestamps and IP address.
• Timeoutable: expires sessions that have not been active in a specified period of time.
• Validatable: provides validations of email and password. It's optional and can be customized, so you're able to define your own validations.
• Lockable: locks an account after a specified number of failed sign-in attempts. Can unlock via email or after a specified time period.

Devise is guaranteed to be thread-safe on YARV. Thread-safety support on JRuby is in progress.

本自述文件也有更友好的可操纵的格式页面

Devise是一个基于Warden的，更加灵活的身份验证的rails解决方案。

　　1.基于Rack

　　2.是一个基于Rails引擎的完整MVC解决方案

　　3.允许多个模块同时登陆

　　4.基于模块化的概念：只使用你需要的

它由10个模块组成：

　　1.数据库验证：注册信息的同时将密码加密并且储存在数据库中以便于身份验证，无论提交POST请求还是HTTP基本身份验证的情况下都支持。

　　2.Omniauthable验证：添加了OmniAuth(https://github.com/intridea/omniauth)身份验证。

　　3.邮件确认：在登陆时发送验证邮件确认邮件已被确认。

　　4.重获密码：重新设置密码并且发送重设密码邮件

　　5.注册：控制已注册用户的功能，已注册用户可以编辑和删除他们的账户。

　　6.记忆cookie功能：管理创建和清楚用户已保存的cookie的记忆令牌。

　　7.可追踪的：追踪账户的数量，时间以及IP地址。

　　8.会话超时管理：在特定的时间内会话到期。

　　9.验证信息：提供验证邮件和密码。此功能是可选择和定制的，所以你可以定义你自己需要的验证。

　　10.可锁定的：在指定数量的失败登陆后锁定账户，可以通过限定时间或者邮件验证解锁账户。

Devise在YARV虚拟机上是第三方安全的，在Jruby上第三方安全正在进行中。

八.rails/jbuilder

Create JSON structures via a Builder-style DSL

Jbuilder gives you a simple DSL for declaring JSON structures that beats massaging giant hash structures. This is particularly helpful when the generation process is fraught with conditionals and loops.

用类似ruby语法的领域语言（看了下代码,还是有些不一样）建立JSON结构的文件

使用Jbuilder，它能给你一个简单的DSL语言，JSON结构能控制伟大的哈希结构.当你建立一个条件句或者环形结构时，会特别有帮助。

九.rails/spring

Spring is a Rails application preloader. It speeds up development by keeping your application running in the background so you don't need to boot it every time you run a test, rake task or migration.

spring是一个rails应用预载器。他大大加快了开发效率，无论你运行测试，还是rake任务或数据，他都会保持后台运行，所以免去了你时刻启动的烦恼。