{"image_url":null,"description":"\u3053\u3093\u306b\u3061\u306f!! tahara \u3067\u3059\u3002 Lisp on Rails \u7b2c3\u56de\u3067\u3059! \u4eca\u56de\u306f ActiveRecord \u306e belongs_to \u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u3082\u3069\u304d\u3092\u5b9f\u88c5\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002 \u5b9f\u884c\u6642\u306e\u30a4\u30e1\u30fc\u30b8\u3068\u3057\u3066\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 (def-record post) (def-record comment (:belongs-to post)) ; comments \u30c6\u30fc\u30d6\u30eb\u306f post_id \u5217\u3092\u6301\u3063\u3066\u3044\u308b\u3002 (mapcar #'post-of (all comment)) ;; => \u30dd\u30b9\u30c8\u306e\u30ea\u30b9\u30c8\u3092\u53d6\u5f97 \u3053\u308c\u3092\u5b9f\u88c5\u3059\u308b\u306e\u306b Common Lisp \u306e MOP \u3092\u4f7f\u3063\u3066\u307f\u307e\u3059\u3002 \u30a4\u30f3\u30b9\u30bf\u2026","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/dev-actindi/","blog_title":"\u30a2\u30af\u30c8\u30a4\u30f3\u30c7\u30a3\u958b\u767a\u8005\u30d6\u30ed\u30b0","author_name":"dev-actindi","provider_url":"https://hatena.blog","height":"190","published":"2010-02-12 10:55:04","version":"1.0","blog_url":"https://tech.actindi.net/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftech.actindi.net%2F2010%2F02%2F12%2F3474928504\" title=\"Lisp on Rails \u7b2c3\u56de \u301c belongs-to - \u30a2\u30af\u30c8\u30a4\u30f3\u30c7\u30a3\u958b\u767a\u8005\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","title":"Lisp on Rails \u7b2c3\u56de \u301c belongs-to","type":"rich","categories":["Lisp","on","Rails","tahara"],"url":"https://tech.actindi.net/2010/02/12/3474928504"}