ã¿ã‚“ãªRailsã®STIを誤解ã—ã¦ãªã„ã‹!? - Qiitaãªã€ãªã‚‹ã»ã©...!? ã„ã‚„ã€ã¿ã‚“ãªã¡ã‚‡ã£ã¨èª¤è§£ã—ã¦ã‚‹ã‚“ã˜ã‚ƒãªã„ã‹? よーã—ã€ãŠçˆ¶ã•ã‚“ã€ã¿ã‚“ãªãŒSTIを使ã„ãŸããªã‚‹ã‚ˆã†ã«ã¡ã‚‡ã£ã¨é ‘å¼µã£ã¡ã‚ƒã†ãž! STIã¨ã¯ STIã¯ã€å˜ä¸€ã®ç¶™æ‰¿éšŽå±¤ã«æ‰€å±žã™ã‚‹ã‚¯ãƒ©ã‚¹ç¾¤ã‚’ã€ãŸã ã²ã¨ã¤ã®ãƒ†ãƒ¼ãƒ–ルを使ã£ã¦æ°¸ç¶šåŒ–ã™ã‚‹æ‰‹æ³•ã§ã™ã€‚ PofEAA Railsã®ãƒ‰ã‚ュメントをæ¼ã‚‹ã¨ã€æ¬¡ã®ã‚ˆã†ãªè¨˜è¿°ãŒè¦‹ã¤ã‹ã‚Šã¾ã™ã€‚ http://api.rubyonrails.org/classes/ActiveRecord/Inheritance.html Note, all the attributes for all the cases are kept in the same table. Read more: www.martinfowler.com/eaaCatalog/singleTableInheritance.html ã“ã®ãƒªãƒ³ã‚¯å…ˆã¯ã€ãƒªãƒ•ã‚¡ã‚¯ã‚¿ãƒªãƒ³ã‚°ã§æœ‰åãªMarti
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