ActiveSupport::Concernã™ã”ã„ - UNKKKKK「メタプãƒã‚°ãƒ©ãƒŸãƒ³ã‚°Rubyã€ã«æ›¸ã„ã¦ã‚る内容ã¨æœ€æ–°ã®ActiveRecord(3.0.9)ã¯ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã®ç®¡ç†æ–¹æ³•ãŒã‹ãªã‚Šé•ã£ãŸã®ã§ã€ã©ã†ãªã£ã¦ã‚‹ã®ã‹èª¿ã¹ãŸã€‚ ã©ã†ã‚‚ActiveSupportã®ConcernモジュールãŒé¢å€’ã‚’ã¿ã¦ã‚‹ã£ã½ã„。 module M extend ActiveSupport::Concern module ClassMethods def cm; puts 'I am a class method'; end end module InstanceMethods def im; puts 'I am an instance method'; end end end ã¿ãŸã„ã«æ›¸ãã¨ã€ã“ã®ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã‚’includeã—ãŸã‚¯ãƒ©ã‚¹ã«ã€ClassMethodsã«æ›¸ã„ãŸå†…容ãŒãƒ¡ã‚½ãƒƒãƒ‰ãŒã‚¯ãƒ©ã‚¹ãƒ¡ã‚½ãƒƒãƒ‰ã¨ã—ã¦è¿½åŠ ã•ã‚Œã‚‹ã€‚ 仕組ã¿ã¨ã—ã¦ã¯ã€include時ã«Concernモジュール
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