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介绍rails-bestpractices.com,以及开发中使用的plugins/gems

介绍rails-bestpractices.com,以及开发中使用的plugins/gems

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  • 1. rails-bestpractices.com www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 2. 为什么需要 Rails Best Practices? www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 3. 遵循 Rails Best Practices 写出更漂亮的 Rails 代码 成为更优秀的 Rails 程序员 得到更好的回报 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 4. 提供一个分享最佳实践的地方 提供一个获取最佳实践的地方 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 5. rails best practices 的故事 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 6. 很久很久以前。。。 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 7. 2009 年 10 月 24 日 上海 ihower 发表演讲 “ Rails Best Practices” http://www.slideshare.net/ihower/rails-best-practices www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 8. 2009 年 11 月 03 日 rails_best_practices 项目启动 http://github.com/flyerhzm/rails_best_practices www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 9. rails_best_practices 项目 根据 ihower 的演讲对 rails 代码进行静态分析,找出 bad smell www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 10. 2010 年 06 月 19 日 metric_fu 项目集成 rails_best_practices http://metric-fu.rubyforge.org www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 11. 2010 年 07 月 04 日 rails-bestpracitces.com 项目启动 http://rails-bestpractices.com www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 12. rails-bestpractices 从何开始? www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 13. Rails Template www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 14. Rails Template 创建 rails 应用的模板 扩展 rails 应用的模板 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 15. Rails Template www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development run “echo TOD > README” gem “haml”, “>= 3.0.13” plugin “typus”, :git => “git://github.com/fesplugas/typus.git” generate “model User login:string email:string” route “root :to => 'home#show'” rake “db:migrate” git :add => “.”
  • 16. Rails Template www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Demo http://github.com/flyerhzm/rails3-template
  • 17. 我碰到的 Rails3 变动 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Generators Routes ActiveRecord 接口 Rspec2
  • 18. Rails3 Route www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development resources :posts do get :archive, :on => :collection resources :comments, :only => :create resources :votes, :only => [:create, :destroy] resource :implementation end match 'search' => 'search#show', :as => :search match 'page/:name' => 'pages#show', :as => :page root :to => "posts#index"
  • 19. Rails3 Route www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development /tags/rails/posts => /tags/rails?nav=posts /tags/rails/posts?page=2 => /tags/rails?nav=posts&page=2 /tags/rails/posts?action=show&controller=tags&nav=posts&page=2 => /tags/rails?nav=posts&page=2 match "/tags/:id/posts" => redirect { |params, req| if req.query_string.index('page') # query_string remove controller and action "/tags/#{params[:id]}?#{query_string}" else "/tags/#{params[:id]}?nav=posts" end }
  • 20. Rails3 Scope www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development scope :implemented, where(:implemented => true) default_scope order('created_at desc') with_exclusive_scope do scope :most_voted, order('vote_points desc') end
  • 21. 介绍一些非常实用的插件 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 22. Haml www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development 一种 非常简洁的模板语言,是 ERB 的替代品 http://github.com/nex3/haml
  • 23. Haml (Before) www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development <div id=&quot;profile&quot;> <div class=&quot;left column&quot;> <div id=&quot;date&quot;><%= print_date %></div> </div> <div class=&quot;right column&quot;> <div id=&quot;email&quot;><%= current_user.email %></div> <div id=&quot;bio&quot;><%= h current_user.bio %></div> </div> </div>
  • 24. Haml (After) www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development #profile .left.column #date= print_date #address= current_user.address .right.column #email= current_user.email #bio= h(current_user.bio)
  • 25. Compass www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development 一种 css 框架 使得 css 更易于创建和书写 http://github.com/chriseppstein/compass
  • 26. Compass www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development reset layout (blueprint …) css3 (border radius, text shadow, gradient …) utilities (clearfix, float, horizontal list …)
  • 27. Compass 代码重用 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development @mixin wikistyle { margin: 1em 0; h1 { font-size: 170%; } h2 { font-size: 150%; } … }
  • 28. Compass 代码重用 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development @import ‘wikistyle’ .post .wikistyle { @include wikistyle; margin-top: 10px; } .question .wikistyle { @include wikistyle; margin-top: 5px; }
  • 29. Formtastic www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development 简化 form 表单的创建 http://github.com/justinfrench/formtastic
  • 30. Formtastic www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development = semantic_form_for @user do |form| = form.inputs do = form.input :login, :label => 'Username' = form.input :email = form.input :password = form.input :password_confirmation = form.buttons do = form.submit &quot;Register&quot;
  • 31. Inherited_resources www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development 加速 controller 的开发 http://github.com/josevalim/inherited_resources
  • 32. Inherited_resources www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development class AnswersController < InheritedResources::Base before_filter :require_user, :only => [:new, :edit, :create, :update] belongs_to :question create! do |success, failure| success.html { redirect_to question_path(@question) } failure.html { render 'questions/show' } end update! do |success, failure| success.html { redirect_to question_path(@question) } end end
  • 33. Authlogic authlogic-connect www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development 注册、登录 使用 facebook 、 twitter 帐号登录 使用 OpenID 帐号登录
  • 34. Exception_notification www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development 邮件通知服务器上的错误 非常重要,必不可少! http://github.com/rails/exception_notification
  • 35. 简单的优化工作 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 36. 前端优化 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development 把所有的 stylesheets 组合为一个 all.css 把所有的 javsacripts 组合为一个 all.js 把所有的图片组合为一个 css_sprite.png
  • 37. 组合 css www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development = stylesheet_link_tag 'compiled/screen', 'compiled/layout', 'compiled/post', :cache => true
  • 38. 组合 javascript www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development = javascript_include_tag 'jquery', 'rails', 'application', :cache => true
  • 39. Css_sprite www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development 自动处理 css sprite 约定: images/css_sprite 目录下的图片组合成 css sprite 图片 生成 css_sprite.png 和 css_sprite.css (css, sass, scss) http://github.com/flyerhzm/css_sprite
  • 40. Css sprite www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development twitter_icon.png .twitter_icon hotmail-logo.png hotmail-logo icons/twitter_icon.png .icons .twitter_icon widget/icons/twitter_icon.png .widget .icons .twitter_icon twitter_icon_hover.png .twitter_icon:hover twitter-icon-hover.png .twitter-icon:hover logos_hover/gmail_logo.png .logos:hover .gmail_logo logos-hover/gmail-logo.png .logos:hover .gmail-logo .gmail-logo-active.png .gmail-logo.active logos-active/gmail-logo.png .logos.active .gmail-logo
  • 41. SQL 查询优化 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development 找出所有没有索引的数据表外键 http://github.com/eladmeidar/rails_indexes
  • 42. N+1 查询 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development 找出 N+1 的查询以及多余的 eager loading http://github.com/flyerhzm/bullet
  • 43. N+1 查询 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development 动态提示: (alert, console.log, logger, growl, xmpp) N+1 Query detected Post => [:user] Add to your finder: :include => [:user] N+1 Query method call stack
  • 44. 测试 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development ngty 测试代码主要贡献者
  • 45. remarkable_activerecord www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development has_one :implementation, :dependent => :destroy has_many :posts, :dependent => :destroy validates_presence_of :title, :body validates_uniqueness_of :title
  • 46. remarkable_activerecord www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development should_have_one :implementation, :dependent => :destroy should_have_many :posts, :dependent => :destroy should_validate_presence_of :title, :body should_validate_uniqueness_of :title
  • 47. Module, module, module www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development class Post < ActiveRecord::Base belongs_to user, :counter_cache => true def belongs_to?(user) self.user == user end end
  • 48. Module, module, module www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development module UserOwnable def self.included(base) base.class_eval do belongs_to :user, :counter_cache => true end end def belongs_to?(user) self.user == user end end class Post < ActiveRecord::Base include UserOwnable end
  • 49. Module, module, module www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development describe Post do include RailsBestPractices::Macros should_be_user_ownable end module RailsBestPractices::Macros def should_be_user_ownable describe 'being user ownable' do should_belong_to :user, :counter_cache => true it 'should belong to someone if he is the owner of it' it 'should not belong to someone if he is not the owner of it' end end end
  • 50. 分享你的 Rails 最佳实践 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 51. Rails 最佳实践问答 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 52. rails_best_practices gem demo www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 53. rails_best_practices 将会在本月底开始支持 rails3 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
  • 54. Q&A 谢谢 www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development