[B! ActiveRecord] hatekun33ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

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ActiveRecordã«é–¢ã™ã‚‹hatekun33ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (7)

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hatekun33 2015/12/16
ActiveRecord

rails
ãƒªãƒ³ã‚¯
Rails ã§ fat model ã‚’é¿ã‘ã‚‹ãŸã‚ã®ã€ã‚ã¾ã‚ŠçŸ¥ã‚‰ã‚Œã¦ã„ãªã„æ–¹æ³•ã«ã¤ã„ã¦ - ãŠã‚‚ã—ã‚webã‚µãƒ¼ãƒ“ã‚¹é–‹ç™ºæ—¥è¨˜
ã“ã®ã‚¨ãƒ³ãƒˆãƒªã§æ›¸ã„ãŸå†…å®¹ã¯ã€ã»ã¼ Growing Rails Applications in Practice ã®å†…å®¹ãŒå…ƒã«ãªã£ã¦ã„ã¾ã™ã€‚è‹±èªžã§ã™ãŒã€ã“ã“ã§æŒ™ã’ãŸå†…å®¹ä»¥å¤–ã«ã‚‚ã‚³ãƒ¼ãƒ‰ã‚’ç¶ºéº—ã«ä¿ã¤ãƒ†ã‚¯ãƒ‹ãƒƒã‚¯ãŒæ›¸ã‹ã‚Œã¦ãŠã‚Šã€ã‹ã¤ãƒšãƒ¼ã‚¸æ•°ã‚‚å°‘ãªãèªã¿ã‚„ã™ã„ã§ã™ã€‚ã‚³ãƒ¼ãƒ‰ã‚’ç¶ºéº—ã«ä¿ã¤ã®ãŒå¥½ããªæ–¹ã¯ä¸€èªã—ã¦ã¿ã‚‹ã“ã¨ã‚’ãŠã™ã™ã‚ã—ã¾ã™ã€‚ ã¯ã˜ã‚ã« Rails ã§ fat model ã‚’é¿ã‘ã‚‹ãŸã‚ã®æ–¹æ³•ã¯ã€7 Patterns to Refactor Fat ActiveRecordÂ Models ã‚’å§‹ã‚ã¨ã—ã¦ã€å¤šãã®ã‚„ã‚Šæ–¹ãŒå˜åœ¨ã—ã¾ã™*1ã€‚ validation ã‚„ callback ã¯ ActiveRecord(ä»¥ä¸‹AR) ã‚’ç¶™æ‰¿ã›ãšã¨ã‚‚åˆ©ç”¨ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚7 Patterns to Refactor Fat ActiveRecordÂ Models ã® ã€Œ3. Extract Form Objects
hatekun33 2015/08/24
ActiveRecord

Rails
ãƒªãƒ³ã‚¯
ActiveRecordã®èªã¿è¾¼ã¿ãŒå®Ÿéš›ã«ãƒˆãƒªã‚¬ãƒ¼ã•ã‚ŒãŸå ´æ‰€ã‚’ãƒã‚°ã«è¨˜éŒ²ã™ã‚‹gem - Qiita
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hatekun33 2015/07/11
ActiveRecord

Rails
ãƒªãƒ³ã‚¯
ActiveRecordã‚’é€Ÿãã—ãŸã„ã ã‘ã®äººç”Ÿã ã£ãŸ - Qiita
Help us understand the probl em. What is going on with this article? Rails3.2ã‹ã‚‰Rails4.2ã«ä¸Šã’ãŸã‚‰ActiveRecordãŒé…ããªã£ãŸã®ã§ã€ã©ã†ã‚„ã£ã¦èª¿æŸ»ã—ã¦ã€ã©ã®ã‚ˆã†ã«å¯¾å‡¦ã—ãŸã‹ã‚’èªžã£ã¦ã¿ãŸã„ã€‚ ã¨ã¦ã‚‚é•·ã„ã®ã§ã€ãƒ€ãƒ«ã„äººã¯æœ€åˆã¨æœ€å¾Œã ã‘èªã‚ã°ã‚ˆã„ã§ã™ã€‚ TL;DR ç’°å¢ƒ: Ruby 2.1.5 ARã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’å¤§é‡ã«(ã–ã£ãã‚Š750kãã‚‰ã„)loadã™ã‚‹ãƒãƒƒãƒå‡¦ç† 3.2ç³»ã§ã®å®Ÿè¡Œæ™‚é–“ã¯ç´„480secã€ 4.2ç³»ã§ã¯ç´„2900sec ç´„6å€ã®æ€§èƒ½åŠ£åŒ– åŽŸå› : preloadã§æ€§èƒ½åŠ£åŒ–ã—ã¦ãŸ CollectionProxyã®ç”Ÿæˆå‘¨ã‚Šã§é…ããªã£ã¦ãŸ Rails4ã‹ã‚‰ARã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®1attributeæ¯Žã«Objectç”Ÿæˆã™ã‚‹ã®ã§é…ã„ GCã®æ™‚é–“ã‚‚å¢—ãˆãŸ èª¿æŸ»æ–¹æ³•: Githubã®commitã€Issueã‚’
hatekun33 2015/04/15
Rails

ActiveRecord

ruby

performance
ãƒªãƒ³ã‚¯
Rails ã§ååˆ†ã«æ´»ç”¨ã•ã‚Œã¦ã„ãªãã¦ã‚‚ã£ãŸã„ãªã„ ActiveRecord::Relation ã®ãƒ¡ã‚½ãƒƒãƒ‰ TOP 10 - æ‰é¢¨å‘‚2.0 - A Lifelog -
2013å¹´12æœˆ2æ—¥æ›´æ–°: å‚ç…§ã•ã‚Œã‚‹ã“ã¨ãŒå¤šã„ã®ã§ Rails 4 ã®æƒ…å ±ã‚’è¨³æ³¨ã¨ã—ã¦è¿½è¨˜ã—ã¾ã—ãŸã€‚ã¾ãŸã€Rails 4 ã«é–¢ã™ã‚‹æƒ…å ±ã¯ã€ WEB+DB PRESS Vol.73 ãŒéžå¸¸ã«å‚è€ƒã«ãªã‚‹ã®ã§ã€ä¸€èªã‚’ãŠã™ã™ã‚ã—ã¾ã™ã€‚ ã“ã®æ–‡ç« ã¯ Mitch Crowe æ°ã®ãƒ–ãƒã‚°ã‚ˆã‚Š 2012å¹´4æœˆ14æ—¥ã®è¨˜äº‹ã‚’ç¿»è¨³ã—ãŸã‚‚ã®ã§ã™ã€‚ The 10 Most Underused ActiveRecord::Relation Methods http://blog.mitchcrowe.com/blog/2012/04/14/10-most-underused-activerecord-relation-methods/ æ˜¨æ—¥ã¯ ActiveRecord::Relation ã®ã‚³ãƒ¼ãƒ‰ã«è†ã¾ã§æµ¸ã‹ã£ã¦ã€ä½¿ã‚ã‚Œã¦ã„ã‚‹ã®ã‚’ã“ã‚Œã¾ã§å…¨ç„¶è¦‹ãŸã“ã¨ãŒãªã„é¢ç™½ã„ãƒŠã‚²ãƒƒãƒˆã‚’æ€ã„å‡ºã•ã›ã¦ãã‚ŒãŸã€‚ã“ã®è¨˜äº‹ã§ã€ååˆ†ã«æ´»ç”¨
hatekun33 2015/01/20
ActiveRecord

rails
ãƒªãƒ³ã‚¯
ActiveRecordã‚’æ”¯ãˆã‚‹æŠ€è¡“ - Arelã¨ã¯ä½•è€…ãªã®ã‹? (å…¨5å›ž) ãã®1 | Webã‚·ã‚¹ãƒ†ãƒ é–‹ç™ºï¼æ•™è‚²ã‚½ãƒªãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã®ã‚¿ã‚¤ãƒ ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ¡ãƒ‡ã‚£ã‚¢
ActiveRecordã‚’æ”¯ãˆã‚‹æŠ€è¡“ â€“ Arelã¨ã¯ä½•è€…ãªã®ã‹? (å…¨5å›ž) ãã®1 #activerecord#Arel#rails#ruby#sql 2014å¹´ 05æœˆ 04æ—¥ nishio Rails3, ActiveRecordã‹ã‚‰ã¯ã€å†…éƒ¨ã§Arelã¨å‘¼ã°ã‚Œã‚‹SQLç”Ÿæˆç”¨ã®ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãŒåˆ©ç”¨ã•ã‚Œã¦ã„ã¾ã™ã€‚ ä»Šå›žã€ArelãŒå†…éƒ¨ã§ã©ã®ã‚ˆã†ã«SQLã‚’ç”Ÿæˆã—ã¦ã„ã‚‹ã®ã‹ã‚’èª¿æŸ»ã—ãŸã®ã§ã€å½“ãƒ–ãƒã‚°ã«ã¦å…¬é–‹ã„ãŸã—ã¾ã™ã€‚ ã¡ã‚‡ã£ã¨é•·ããªã£ã¦ã—ã¾ã£ãŸãŸã‚ã€å…¨5å›žã«åˆ†å‰²ã—ã¾ã—ãŸã€‚ ä»¥ä¸‹ã€ç›®æ¬¡ã¨ãªã‚Šã¾ã™ã€‚ ActiveRecordã‚’æ”¯ãˆã‚‹æŠ€è¡“ â€“ Arelã¨ã¯ä½•è€…ãªã®ã‹?(å…¨5å›ž) ãã®1 [ã“ã®è¨˜äº‹]Arelã«ã¤ã„ã¦ãªãœèª¿æŸ»ã—ã‚ˆã†ã¨æ€ã£ãŸã®ã‹ã€ãã®èƒŒæ™¯ã¨ä»Šå¾Œåˆ©ç”¨ã™ã‚‹ã‚µãƒ³ãƒ—ãƒ«ã‚³ãƒ¼ãƒ‰ã‚’æŽ²è¼‰ã—ã¦ã„ã¾ã™ã€‚ActiveRecordã‚’æ”¯ãˆã‚‹æŠ€è¡“ â€“ Arelã¨ã¯ä½•è€…ãªã®ã‹?(å…¨5å›ž) ãã®2ã‚·ãƒ³ãƒ—ãƒ«ãªSQLæ–‡ã€ã€Œ
hatekun33 2014/12/03
ActiveRecord

Rails

SQL

ruby
ãƒªãƒ³ã‚¯
MVCãƒ¢ãƒ‡ãƒ«ã«ãŠã‘ã‚‹Modelã®é–¢ä¿‚æ€§ã¨Railsã§ã®ã‚¢ã‚½ã‚·ã‚¨ãƒ¼ã‚·ãƒ§ãƒ³ã®è¨å®š
Rails ã‚’å‹‰å¼·ä¸ã§ã™ã€‚å¦ã‚“ã ã“ã¨ã‚’ã¡ã‚‡ã£ã¨ãšã¤ã¾ã¨ã‚ã¦ã„ããŸã„ã¨æ€ã„ã¾ã™ã€‚ èª¤ã‚ŠãŒã‚ã‚Œã°æ•™ãˆã¦ã„ãŸã ã‘ã‚‹ã¨å¹¸ã„ã§ã™ã€‚ ã‚¢ã‚½ã‚·ã‚¨ãƒ¼ã‚·ãƒ§ãƒ³ã£ã¦ä½•ï¼Ÿæ—¥æœ¬èªžè¨³ã™ã‚‹ã¨ã€ã€Œã¤ãªãŒã‚Šã€ã¨ã‹ã€Œé–¢ä¿‚æ€§ã€ã¨ã‹è¨³ã•ã‚Œã‚‹ã€‚ MVCãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã‚’ä½¿ã†ã¨å‡ºã¦ãã‚‹ã‚¢ã‚½ã‚·ã‚¨ãƒ¼ã‚·ãƒ§ãƒ³ã¯ã€ãƒ¢ãƒ‡ãƒ«åŒå£«ã®é–¢ä¿‚æ€§ã®ã“ã¨ã€‚ ã™ã”ãå¤§é›‘æŠŠã«è¨€ãˆã°ã€ãƒ†ãƒ¼ãƒ–ãƒ«ã® JOIN ã®ç¹‹ãŽæ–¹ã®ã“ã¨ã€‚ãŸã¶ã‚“åˆã£ã¦ã‚‹ã€‚ ãªãœã‚¢ã‚½ã‚·ã‚¨ãƒ¼ã‚·ãƒ§ãƒ³ãŒå¿…è¦ãªã®ã‹ï¼Ÿè¨å®šã—ã¦ãŠãã¨ Rails ã§ã¯ JOIN ã‚’æ˜Žç¤ºçš„ã«æ›¸ã‹ãªãã¦ã‚‚ SELECT ã§ããŸã‚Šã€ ç´ä»˜ã„ãŸãƒ‡ãƒ¼ã‚¿ã‚’ä¸€ç·’ã«å‰Šé™¤ã§ããŸã‚Šã€è‰²ã€…ã¨ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã®æ”¯æ´ã‚’å¾—ã‚‰ã‚Œã‚‹ã€‚ ä½•æ•…ã‚¢ã‚½ã‚·ã‚¨ãƒ¼ã‚·ãƒ§ãƒ³ãªã®ï¼Ÿ(Why Associations?) - Active Record Associations - æ ªå¼ä¼šç¤¾ã‚¦ã‚µã‚®ã‚£wiki Active Record Associations â€” Ruby on R
hatekun33 2014/08/18
Rails

ActiveRecord
ãƒªãƒ³ã‚¯
1