Using Polymorphism to Make a Better Activity Feed in Rails
You won’t find “polymorphic partials†in Rails’ API documentation. However, the general programming technique of polymorphism can be applied to Rails partials. Example: an activity feed for an eBay marketplace Imagine you are signed into an application similar to eBay. You can buy or sell items on the marketplace. In order to buy an item, you need to bid on it. You see an activity feed that includ
Http caching ruby rails
ç´ æ™´ã‚‰ã—ã„事ã«ã€Rails3ã¯é™çš„ãªãƒšãƒ¼ã‚¸ã‚„アセットå‘ã‘ã®ã‚·ãƒ³ãƒ—ルãªHTTPã‚ャッシュをæä¾›ã—ã¦ã„ã¾ã™ã€‚ã‚ãªãŸã®ã‚¢ãƒ—リケーションã¯ã“ã®æ©Ÿèƒ½ã«ã‚ˆã£ã¦æ©æµã‚’å—ã‘ã‚‹ã“ã¨ãŒã§ãã¾ã™ãŒã€é©åˆ‡ãªã‚ャッシュヘッダをè¦å®šã—よã†ã¨ã™ã‚‹ã¨ã€ãŸã¨ãˆå‹•çš„ãªã‚‚ã®ã§ã‚ã£ã¦ã‚‚ã€ã‚ãªãŸã¯ã‚¢ãƒ—リケーションを動ã‹ã™ãŸã‚ã«ãƒªã‚½ãƒ¼ã‚¹ã‚„ユーザ体験ã€ãƒ¬ã‚¹ãƒãƒ³ã‚¹ã‚¿ã‚¤ãƒ ã®å¤§ããªæ”¹å–„を求ã‚られるã‹ã‚‚ã—ã‚Œã¾ã›ã‚“。 ã“ã®è¨˜äº‹ã¯ã€HTTPã‚ャッシュヘッダを利用ã™ã‚‹äº‹ã§ã€æœ€å°ã®å¤‰æ›´ã§ãƒ¬ã‚¹ãƒãƒ³ã‚¹ã‚¿ã‚¤ãƒ ã®æ”¹å–„ãŒã§ãã‚‹ã«ãªã‚‹ã‚ˆã†ãªã„ãã¤ã‹ã®åˆ©ç”¨ä¾‹ã‚’説明ã—ã¦ã„ã¾ã™ã€‚ ã“ã®è¨˜äº‹ãŒå‚ç…§ã™ã‚‹ãŸã‚ã®ã‚¢ãƒ—リケーションã®ã‚½ãƒ¼ã‚¹ã¯[GitHubã§åˆ©ç”¨å¯èƒ½ã§ã™](https://github.com/vzmind/demo-http-caching/)。ã¾ãŸå®Ÿè¡Œä¸ã®ã‚‚ã®ã¯[http://http-caching-rails.herokuapp.com](http://h
Railsã§before_filter/before_actionãŒã‚¢ã‚¯ã‚·ãƒ§ãƒ³ã‚’ä¸æ¢ã™ã‚‹ä»•çµ„ã¿ã‚’èªã‚“ã§ã¿ã‚‹ | TechRacho
2013.08.06 Railsã§before_filter/before_actionãŒã‚¢ã‚¯ã‚·ãƒ§ãƒ³ã‚’ä¸æ¢ã™ã‚‹ä»•çµ„ã¿ã‚’èªã‚“ã§ã¿ã‚‹ 大昔ã®Railsã§ã¯ã€before_filterã§falseã‚’è¿”ã™ã¨ãã“ã§chainãŒçµ‚ã‚ã‚‹ã€ã¨ã‚„ã£ã¦ã„ãŸæ°—ãŒã—ã¾ã™ãŒã€ä»Šã¯ãã†ã„ã†ã‚³ãƒ¼ãƒ‰è¦‹ãªã„ã§ã™ã‚ˆã。 Rails 4ã ã¨ã“ã‚“ãªãƒŽãƒªã§before_actionã§redirectã—㦠ã¯ã„ãŠã—ã¾ã„ã€ã£ã¦ã‚„ã‚Šã¾ã™ã‚ˆã。 class UsersController < ApplicationController before_action :my_authenticate_admin def my_authenticate_admin unless current_user.admin? redirect_to root_path end end end 当然ã€ä»¥å¾Œã®before_actionã‚„actionã¯å®Ÿè¡Œã•
Sunspotã§ã¯ã˜ã‚ã‚‹Solr入門
社内勉強会ã§Sunspotã¨Solrã«ã¤ã„ã¦é–‹å‚¬ã—ãŸã¨ãã®è³‡æ–™ã§ã™ã€‚ Sunspotã‚’åˆã‚ã¦æœ¬ç•ªé‹ç”¨ã«ã®ã›ã‚‹äººå‘ã‘ã«ã€Solrã®åŸºæœ¬çš„ãªæ©Ÿèƒ½ã‚„è¨å®šã«ã¤ã„ã¦ç´¹ä»‹ã—ã¾ã—ãŸã€‚ Railsã¯3.2ã¨4.0を想定ã—ã¦ã„ã¾ã™ã€‚ http://techracho.bpsinc.jp/baba/2013_08_17/12787Read less
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3. 自己紹介 • http://todesking.com • 作ã£ãŸã‚‚ã®: • Okura(Pure Rubyãªå½¢æ…‹ç´ 解æžãƒ©ã‚¤ ブラリ) • Scheme処ç†ç³»(JS) • Brainfxxk高速化ã¨ã‹ 4. 自己紹介 • Webç³»SIer(主ã«Java)→ドリコム(Ruby) • Rubyæ´5å¹´(主ã«ãƒ—ライベート) • Railsæ´3ヶ月 • ソーシャルゲームを作ã£ã¦ã„ã¾ã™ • コンプガãƒãƒ£ã®è©±ã¯ã—ã¾ã›ã‚“ • æ ªä¾¡ã®è©±ã‚‚ã—ã¾ã›ã‚“
railsã®scope(model)ã«ã¤ã„ã¦ãƒ¡ãƒ¢ | ダークフレイムブãƒã‚°
railsã®modelä¸ã§ä½¿ç”¨ã™ã‚‹scopeã«ã¤ã„ã¦ãƒ¡ãƒ¢ã—ã¾ã™ã€‚ railsã§ã¯ã€Œscopeã€ã¨è¨€ã£ã¦ã‚‚以下ã®ã‚ˆã†ã«è‰²ã€…有るã®ã§æˆ¸æƒ‘ã„ã¾ã—ãŸã€‚ modelä¸ã§DBを検索ã™ã‚‹æ¡ä»¶ã‚’ã‚らã‹ã˜ã‚準備ã™ã‚‹ãŸã‚ã®ã€Œscope〠routes.rbä¸ã§ä½¿ç”¨ã™ã‚‹ã€URLã«namespaceを付与ã™ã‚‹ãŸã‚ã®ã€Œscope〠変数ã®åå‰ç©ºé–“ã®æœ‰åŠ¹ç¯„囲ã®ã“ã¨ã‚’指ã™ã€Œã‚¹ã‚³ãƒ¼ãƒ—〠ãã®ä»–パラメーターè¨å®šç‰ scope(model)ã®ä½¿ã„æ–¹ モデル㫠scope(スコープå, æ¡ä»¶å¼) を記述ã—ã¾ã™ã€‚ コントãƒãƒ¼ãƒ©ãƒ¼ç‰ã§ã€ã€Œãƒ¢ãƒ‡ãƒ«å.スコープåã€ã¨ã™ã‚‹ã¨ã€æ¡ä»¶å¼ã‚’用ã„ãŸDBアクセスを行ã„ã¾ã™ã€‚ 使用例①(é™é †ã§ä¸¦ã³æ›¿ãˆãŸãƒ‡ãƒ¼ã‚¿ã‚’得る為ã®ã‚¹ã‚³ãƒ¼ãƒ—) Diaryモデルä¸ã«scopeを定義 class Diary scope :latest, -> { order("updated_at desc") } # ↓使用ã§
Rails 4.1ã§å°Žå…¥ã•ã‚Œã‚‹ActiveRecord Enumsã«éš ã•ã‚ŒãŸç½ - ã¼ããŸã¡å®‡å®™äºº
TL;DR ActiveRecord::Enumã§ã€å®‰æ˜“ã«å€¤ã‚’è¿½åŠ ãƒ»å‰Šé™¤ã™ã‚‹ã®ã¯å±é™ºã€‚å°†æ¥ã®å¤‰æ›´ã«å‚™ãˆã¦ã€DBã«ç™»éŒ²ã•ã‚Œã‚‹å€¤ã‚’Hashã§æŒ‡å®šã—ã¾ã—ょã†ã€‚ class User < ActiveRecord::Base # This is BAD enum authority: [:registrant, :admin] # This is OK enum authority: { registrant: 10, admin: 20 } end 本編 年度も変ã‚ã‚Šã•ã¦å¿ƒæ©Ÿä¸€è»¢ã€ã¨ã„ã†å£ç¯€ãªã®ã«ç§ã®åœ°å…ƒã¯æ˜¨æ—¥å¤§é›ªã§ã—ãŸãŒã€çš†æ§˜ã„ã‹ãŒãŠéŽã”ã—ã§ã—ょã†ã‹ã€‚ã•ã¦ä»Šæ—¥ã¯è¡¨é¡Œã®é€šã‚Šã€Rails 4.1ã«ãŠã‘る目玉ã®ã²ã¨ã¤ã€ActiveRecord Enumsã«ã¤ã„ã¦ã§ã™ã€‚ ActiveRecord Enumsã¨ã¯ 例ãˆã°Userモデルã«authority（権é™ï¼‰ã¨ã„ã†å±žæ€§ã‚’æŒãŸã›ãŸã„時ã«ã‚ˆãã‚„ã‚‹ã®ã¯ã€D
TDD is dead. Long live testing. (DHH)
By David Heinemeier Hansson on April 23, 2014 Test-first fundamentalism is like abstinence-only sex ed: An unrealistic, ineffective morality campaign for self-loathing and shaming. It didn't start out like that. When I first discovered TDD, it was like a courteous invitation to a better world of writing software. A mind hack to get you going with the practice of testing where no testing had happen
“binding.pryâ€ã£ã¦å®Ÿéš›ã®ã¨ã“ã‚ã¯ä½•ãªã®ã ã‚ㆠ- Qiita
ã¯ã˜ã‚ã« ã“ã®è¨˜äº‹ã¯Pryã®ã‚³ãƒŸãƒƒã‚¿ãƒ¼ã§ã‚ã‚‹kyryloãŒæ›¸ã„ãŸso-what-is-binding-pry-exactlyを訳ã—ãŸã‚‚ã®ã§ã™ã€‚日本語訳ã®å…¬é–‹ã‚’å¿«ã許å¯ã—ã¦ãã‚ŒãŸkyryloã«æ„Ÿè¬ã—ã¾ã™ã€‚ Pryã®ä½¿ã„æ–¹ã§ä¸€ç•ªæœ€åˆã«ç¿’ã†ã®ã¯ã€â€œbinding.pryâ€ã ã¨æ€ã„ã¾ã™ã€‚ã“ã®è¨€è‘‰ã‚’ã‚ã¡ã“ã¡ã«åŸ‹ã‚込むã“ã¨ã§ã€å¹¸ã›ã«ãªã‚Œã¾ã™ã€‚ç°¡å˜ã«ã„ã†ã¨ã€â€œbinding.pryâ€ã‚’使ã†ã“ã¨ã§ã€æ—¥ã€…ã®ç”Ÿæ´»ãŒã ã„ã¶æ¥½ã«ãªã‚Šã¾ã™ã€‚ã‚ãªãŸã¯â€œbinding.pryâ€ãŒä½•è€…ãªã®ã‹ã€ä¸æ€è°ã«æ€ã£ãŸã“ã¨ã¯ã‚ã‚Šã¾ã›ã‚“ã‹ï¼Ÿã€€ç´°ã‹ã„ã“ã¨ãªã®ã§æ°—ã«ãªã‚‰ãªã‹ã£ãŸã“ã¨ã ã¨æ€ã„ã¾ã™ã€‚ç§ãŒPryを使ã„始ã‚ãŸã¨ãã¯ã€ã“れをãŠã¾ã˜ãªã„ã®ä¸€ç¨®ã¨è€ƒãˆã¾ã—ãŸã€‚“binding.pryâ€ã¯ä¸æ€è°ãªé”法ã®ã‚ˆã†ã«ã¿ãˆãŸã®ã§ã™ã€‚é”法ãªã©ã§ãªã„ã“ã¨ã¯ã€ç¢ºã‹ã§ã™ã€‚ã—ã‹ã—ã€æ–°ã—ã„ã“ã¨ã‚’å¦ã¶ã¨ãã€å®Ÿéš›ã‚ˆã‚Šä¸æ€è°ã«æ€ãˆã¦ã—ã¾ã†ã“ã¨ã¯ã‚ˆãã‚ã‚‹ã“ã¨ã§ã™ã€‚ã“ã®è¨˜
ドリコム的Railsアプリ開発æµå„€
ã€ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã‚«ãƒ•ã‚§Event】エンジニアカフェ× ドリコム技術勉強会～月間50億ＰＶã®ã‚½ãƒ¼ã‚·ãƒ£ãƒ«ã‚²ãƒ¼ãƒ を支ãˆã‚‹æŠ€è¡“～ http://www.facebook.com/events/216511125103989/ see alse: * http://www.slideshare.net/drecom/ss-11667563Read less
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Caching with Rails: An Overview — Ruby on Rails Guides
This guide is an introduction to speeding up your Rails application with caching. Caching means to store content generated during the request-response cycle and to reuse it when responding to similar requests. Caching is often the most effective way to boost an application's performance. Through caching, websites running on a single server with a single database can sustain a load of thousands of
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ã“ã‚“ã«ã¡ã¯ã€hachi8833ã§ã™ã€‚ 今回ã€ã€ŒCrafting Rails 4 Applicationsã€ã¨ã„ã†ä¸€äººã§èªã‚€ã¨ãã˜ã‘ãã†ãªRuby on Rails上級者å‘ã‘技術本をèªã¿é€šã—ã¦ã¿ã‚ˆã†ã˜ã‚ƒãªã„ã®ã¨ã„ã†ç¤¾å†…ä¼ç”»ã«å‚åŠ ã„ãŸã—ã¾ã—ãŸã€‚噂ã«é•ã‚ãšã€åˆå¿ƒè€…ãªã©ã¾ã‚‹ã§ç›¸æ‰‹ã«ã—ã¦ã„ãªã„濃厚ãªå†…容ã§ã€ä¸€ã¤ã®ç« ã«å¤§å°æ§˜ã€…ãªç§˜æ³•ãŒã‚ã„ã„ã£ã±ã„è©°ã‚è¾¼ã¾ã‚Œã¦ã„ã¾ã™ã€‚æ£ç›´è‡ªåˆ†ã®ãƒ¬ãƒ™ãƒ«ã§ã¯ã¡ã‚‡ã£ã¨ç„¡è¬€ã§ã—ãŸãŒã€ä¸Šç´šè€…ã®ä¸–界をã„ã‚ã„ã‚垣間見るã“ã¨ãŒã§ãã¾ã—ãŸã€‚ã‚ã‚Œã¯ã‚‚ã—ã‹ã™ã‚‹ã¨èµ°é¦¬ç¯ã ã£ã®ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“。 自分ãŒæ‹…当ã—ãŸç¬¬2ç« ã€ŒBuilding Models with Active Modelã€ã®ã‚¹ãƒ©ã‚¤ãƒ‰ã‚’掲載ã—ã¾ã™ã€‚ ãã®ä»–ã®å›žã¸ã®ãƒªãƒ³ã‚¯ 第一回：Crafting Out Own Renderer 第二回：Building Models with Active Model（ã“ã®ãƒšãƒ¼ã‚¸ï¼‰ 第三回：Retri
Ginza.rb 第8回 Gemfileã¿ã›ã£ã“ï¼ã¿ã‚“ãªã©ã‚“ãªã®ä½¿ã£ã¦ã¾ã™ï¼Ÿ を開催ã—ãŸ
Ginza.rb.第8回を開催ã—ã¾ã—ãŸã€‚今回ã¯å‚åŠ è€…ã®æ–¹ã«äº‹å‰ã«Gemfileをアップã—ã¦é ‚ãã€ä½¿ç”¨ã—ã¦ã„ã‚‹gemã«ã¤ã„ã¦èª¬æ˜Žã‚’ã—ã¦é ‚ãå½¢å¼ã§å®Ÿæ–½ã€‚ Gemfileã®ç½®ãå ´ã¯[ã“ã¡ã‚‰](https://github.com/ginzarb/meetups/issues/6)。 話ã«ä¸ŠãŒã£ãŸgemã«ã¤ã„ã¦ä»¥ä¸‹ã«ãšã‚‰ãšã‚‰ã¨ã€‚ ### [gon](https://github.com/gazay/gon) Railså´ã®å¤‰æ•°ã‚’JavaScriptã«æ¸¡ã™äº‹ãŒå‡ºæ¥ã‚‹gem。 controllerã‹ã‚‰å¤§é‡ã®ãƒ‡ãƒ¼ã‚¿ã‚’JavaScriptã«æ¸¡ã™å¿…è¦ãŒã‚ã‚‹å ´åˆã«ä¾¿åˆ©ã€‚ 詳細ã¯[RailsCast](http://railscasts.com/episodes/324-passing-data-to-javascript?language=ja&view=asciicast)å‚照。 ### [Better E
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http://blog.inouetakuya.info/entry/2014/06/08/194015
Ruby on Rails Reading Guide
http://blog.inouetakuya.info/entry/2013/10/27/200111
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