Ruby on Rails Self-referential has_many :through associations - ã®ã»ã»ã‚“徒然第二åå…回 ã¨ã„ã†ã‚ã‘ã§ï¼ŒRailsã§è‡ªå·±å‚照多対多アソシエーションをhas_many :throughを利用ã—ã¦å®Ÿè£…ã—ã¦ã¿ã‚‹ãƒ¡ãƒ¢ï¼Ž 今回用æ„ã—ãŸã‚µãƒ³ãƒ—ルã¯WebページãŒãƒªãƒ³ã‚¯ã§ç¹‹ãŒã£ã¦ã‚‹ã‚¤ãƒ¡ãƒ¼ã‚¸ï¼ŽERDã¯ä»¥ä¸‹ã®ç”»åƒã¿ãŸã„ãªæ„Ÿã˜ï¼Ž ãã‚Œãžã‚Œã®modelã¯ã“ã‚“ãªæ„Ÿã˜ï¼Ž class Page < ActiveRecord::Base # Associations has_many :links_sent, :foreign_key => 'from_page_id', :class_name => 'Link', :dependent => :destroy has_many :links_received, :foreign_key => 'to_page_id', :class_name => 'Link', :dependent => :destroy has_many :links_s
Using DBDesigner to generate Rails files | Bill Katz
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