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snjx 2019/10/25

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snjx 2019/10/25

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ActionController::Parametersã‚’Hashã«ã™ã‚‹ - Qiita

ç’°å¢ƒ rails v5 ã©ã†ã—ãŸ railsã®formã§viewã‹ã‚‰å–å¾—ã—ãŸå€¤ã‚’Hashåž‹ã«ã—ãŸã„ã€‚ paramsã®åž‹ã¯ActionController::Parametersã¨ã„ã†åž‹ã§ã—ãŸã€‚ pry(#<WelcomeController>)> @data => <ActionController::Parameters {"utf8"=>"âœ“", "authenticity_token"=>"xxx", "data"=>{"version"=>"1"}, "commit"=>"submit", "controller"=>"welcome", "action"=>"index"} permitted: false> ã“ã‚Œã‚’Hashã«ã—ãŸã„ã€‚ to_hashãƒ¡ã‚½ãƒƒãƒ‰ã‚’ä½¿ãˆã°ã„ã„ã‚ˆã†ã ãŒã€è¨±å¯ã•ã‚ŒãŸé …ç›®ã—ã‹hashã«ã§ããªã„ã‚‚ã‚ˆã†ã€‚ params.permit!.to_hashã®ã‚ˆã†ã«ã™ã‚Œ

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Rails4.1.7, Ruby2.1.4 ã§ç¢ºèªã€‚ Rails4ã‚ˆã‚Šå°Žå…¥ã•ã‚ŒãŸMass Assignmentè„†å¼±æ€§ã‚’é˜²ããŸã‚ã®ä»•çµ„ã¿ãŒStrong Parametersã§ã™ã€‚ def create @user = User.new(permitted_params) end private def permitted_params params.permit(:name, :em ail) endã“ã‚“ãªæ„Ÿã˜ã§ã‚³ãƒ³ãƒˆãƒãƒ¼ãƒ©ã§è¨±å¯ã—ãŸãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã®ã¿ã‚’modelã«æ¸¡ã™ã“ã¨ãŒã§ãã¾ã™ã€‚ ãªãŠã€è¨±å¯ã•ã‚Œã¦ã„ãªã„ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã‚’æ¸¡ã—ãŸå ´åˆã¯ç„¡è¦–ã•ã‚Œã¾ã™ã€‚ ï¼ˆä¾‹å¤–ã‚’æŠ•ã’ã‚‹ã‚ˆã†ã«å¤‰æ›´ã™ã‚‹ã“ã¨ã‚‚å¯èƒ½ï¼‰ ã“ã®Strong Parametersã§hashã‚’è¨±å¯ã™ã‚‹å ´åˆã€2é€šã‚Šã®ã‚„ã‚Šæ–¹ãŒã‚ã‚Šã¾ã—ãŸã€‚ ä¾‹ã¨ã—ã¦ location = { x: 10, y: 20 }ã¨ã„ã†hashã‚’ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã¨ã—ã¦é€ã£ãŸå ´åˆã€ 1. h

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TL;DR StrongParametersã¨ã¯ StrongParameters ã¯, require ã¨ permit ã‹ã‚‰ãªã‚‹ Action Controller ã®ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã§ã™ã€‚ ä½•ãŒã§ãã‚‹ã‚“ã ã‚ã† ãƒ¦ãƒ¼ã‚¶ã‹ã‚‰æ„å›³ã—ãªã„æ§‹é€ ã§æ¸¡ã£ã¦ããŸãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã«å¯¾ã—ã¦ã€ã‚³ãƒ³ãƒˆãƒãƒ¼ãƒ©ãŠã‚ˆã³æ—©æœŸã®æ®µéšŽã§ä¾‹å¤–ã¨ã—ã¦å‡¦ç†ã§ãã¾ã™ã€‚ require: æŒ‡å®šã—ãŸå€¤ãŒå˜åœ¨ã—ãªã‘ã‚Œã°ä¾‹å¤–ã‚’å‡ºã™ permit: è¨±å¯ã—ã¦ãªã„æ§‹é€ ã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã‹ã‚‰é™¤å¤–ã™ã‚‹ ä½•ãŒå¬‰ã—ã„ã‚“ã ã‚ã† ã‚³ãƒ³ãƒˆãƒãƒ¼ãƒ©ã®å…ˆï¼ˆãƒ¢ãƒ‡ãƒ«ã€ãƒ•ã‚¡ã‚¯ãƒˆãƒªã€ãƒªãƒã‚¸ãƒˆãƒªãªã©ãªã©ï¼‰ã§å€¤ã®æ§‹é€ ã«é–¢ã™ã‚‹ä¾‹å¤–ã«ã¤ã„ã¦è€ƒãˆãªãã¦ã‚ˆããªã‚Šã¾ã™ã€‚ ã¤ã¾ã‚Šã€StrongParametersã‚’é€šã—ã¦ã„ã‚Œã°ã€ä»¥é™å—ã‘å–ã£ãŸå€¤ãã®ã‚‚ã®ã ã‘ã«ãƒ•ã‚©ãƒ¼ã‚«ã‚¹ã§ãã‚‹ã‚“ã§ã™ã€‚ éƒ½åº¦ã€ã‚‚ã—å€¤ãŒArrayã˜ã‚ƒãªã‹ã£ãŸã‚‰ã©ã†ã—ã‚ˆã†ã¨ã‹ã€Hashã®æ§‹é€ é•ã£ãŸã‚‰ã©ã†ã—ã‚ˆã†ã¨ã‹è€ƒãˆãªãã¦ã„ã„

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