{"id":2739,"date":"2012-11-19T15:41:40","date_gmt":"2012-11-19T06:41:40","guid":{"rendered":"http:\/\/blog.bitmeister.jp\/?p=2739"},"modified":"2013-08-22T13:29:39","modified_gmt":"2013-08-22T04:29:39","slug":"rails3%e8%a4%87%e6%95%b0%e3%81%ae%e5%a4%96%e9%83%a8%e3%82%ad%e3%83%bc%e3%81%8c%e3%81%82%e3%82%8b%e5%a0%b4%e5%90%88%e3%81%ae%e3%82%a2%e3%82%bd%e3%82%b7%e3%82%a8%e3%83%bc%e3%82%b7%e3%83%a7%e3%83%b3","status":"publish","type":"post","link":"https:\/\/blog.bitmeister.jp\/?p=2739","title":{"rendered":"[Rails3] \u8907\u6570\u306e\u5916\u90e8\u30ad\u30fc\u304c\u3042\u308b\u5834\u5408\u306e\u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3"},"content":{"rendered":"<p>\u53c2\u7167\u5143\u30c6\u30fc\u30d6\u30eb\u306b\u5916\u90e8\u30ad\u30fc\u304c\u8907\u6570\u3042\u308b\u5834\u5408\u306e\u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u306e\u65b9\u6cd5\u3067\u3059\u3002<br \/>\n<br \/>\n<!--more--><\/p>\n<table style=\"border: 1px solid #333333; width: 150px; margin-bottom: 1em;\" border=\"1\" frame=\"border\" cellspacing=\"0\" cellpadding=\"2\">\n<caption>users\u30c6\u30fc\u30d6\u30eb<\/caption>\n<tbody>\n<tr>\n<td>id(PK)<\/td>\n<\/tr>\n<tr>\n<td>name<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>1<br \/>\n|<br \/>\nn<\/p>\n<table style=\"border: 1px solid #333333; width: 150px; margin-bottom: 1em;\" border=\"1\" frame=\"border\" cellspacing=\"0\" cellpadding=\"2\">\n<caption>books\u30c6\u30fc\u30d6\u30eb<\/caption>\n<tbody>\n<tr>\n<td>id(PK)<\/td>\n<\/tr>\n<tr>\n<td>rend_user_id(FK)<\/td>\n<\/tr>\n<tr>\n<td>reserve_user_id(FK)<\/td>\n<\/tr>\n<tr>\n<td>title<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>users\u30c6\u30fc\u30d6\u30eb\u3068books\u30c6\u30fc\u30d6\u30eb\u304c1:n\u3068\u306a\u308b\u69cb\u6210\u3067\u3001<br \/>\nbooks\u30c6\u30fc\u30d6\u30eb\u306erend_user_id\u3001reserve_user_id\u304cusers\u30c6\u30fc\u30d6\u30eb\u306eid\u3092\u6307\u3057\u3066\u3044\u308b\u3082\u306e\u3068\u3057\u307e\u3059\u3002<br \/>\n<br \/>\n\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u306bbooks\u304b\u3089users\u306b\u5bfe\u3057\u3066\u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u5b9a\u7fa9\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<pre><textarea class=\"ruby\" name=\"code\">\r\nbook\u30af\u30e9\u30b9(model)\u306b\u4ee5\u4e0b\u3092\u8ffd\u52a0\r\nbelongs_to :rend_user, :class_name => 'User', :foreign_key => 'rend_user_id'\r\nbelongs_to :reserve_user, :class_name => 'User', :foreign_key => 'reserve_user_id'\r\n<\/textarea><\/pre>\n<p>\u3059\u308b\u3068rend_user_id\u3001reserve_user_id\u305d\u308c\u305e\u308c\u306b\u5bfe\u3057\u3066users\u3092\u95a2\u9023\u4ed8\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>controller\u3067\u547c\u3073\u51fa\u3059\u306b\u306f<\/p>\n<pre><textarea class=\"ruby\" name=\"code\">\r\nbooks = Book.find(:all, :include => [rend_user, reserve_user])\r\nbooks.each do |book|\r\n  p book.rend_user.name\r\n  p book.reserve_user.name\r\nend\r\n<\/textarea><\/pre>\n<p>\u306e\u3088\u3046\u306b\u3059\u308b\u3068rend_user_id\u3001reserve_user_id\u305d\u308c\u305e\u308c\u306b\u7d10\u4ed8\u3044\u305fusers\u30c6\u30fc\u30d6\u30eb\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u53c2\u7167\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Rails\u3063\u3066\u4fbf\u5229\u266a<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53c2\u7167\u5143\u30c6\u30fc\u30d6\u30eb\u306b\u5916\u90e8\u30ad\u30fc\u304c\u8907\u6570\u3042\u308b\u5834\u5408\u306e\u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u306e\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[113,112],"class_list":["post-2739","post","type-post","status-publish","format-standard","hentry","category-tech","tag-rails3","tag-ruby"],"_links":{"self":[{"href":"https:\/\/blog.bitmeister.jp\/index.php?rest_route=\/wp\/v2\/posts\/2739","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.bitmeister.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.bitmeister.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.bitmeister.jp\/index.php?rest_route=\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.bitmeister.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2739"}],"version-history":[{"count":31,"href":"https:\/\/blog.bitmeister.jp\/index.php?rest_route=\/wp\/v2\/posts\/2739\/revisions"}],"predecessor-version":[{"id":3056,"href":"https:\/\/blog.bitmeister.jp\/index.php?rest_route=\/wp\/v2\/posts\/2739\/revisions\/3056"}],"wp:attachment":[{"href":"https:\/\/blog.bitmeister.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.bitmeister.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.bitmeister.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}