{"id":64345,"date":"2021-08-01T08:08:09","date_gmt":"1970-01-01T00:00:00","guid":{"rendered":"https:\/\/www.sejuku.net\/blog\/?p=64345"},"modified":"2024-05-06T11:49:52","modified_gmt":"2024-05-06T02:49:52","slug":"%e3%80%90ruby%e5%85%a5%e9%96%80%e3%80%91active-record%ef%bc%88o-r%e3%83%9e%e3%83%83%e3%83%91%e3%83%bc%ef%bc%89%e3%81%a7attributes%e3%82%92%e6%89%b1%e3%81%8a%e3%81%86","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/64345","title":{"rendered":"\u3010Rails\u5165\u9580\u3011Active Record\uff08O\/R\u30de\u30c3\u30d1\u30fc\uff09\u3067attributes\u3092\u66f4\u65b0\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"

\u4eca\u65e5\u306f\u3001Ruby on Rails<\/strong><\/span>\uff08\u4ee5\u964d\u3001Rails<\/strong><\/span>\uff09\u306eActive Record\uff08O\/R\u30de\u30c3\u30d1\u30fc\uff09<\/strong><\/span>\u3067\u3001attributes<\/strong><\/span>\u3092\u66f4\u65b0\u3059\u308b\u65b9\u6cd5\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

\u30fbattribute\u3084assign_attributes\u3067\u66f4\u65b0\u3057\u305f\u30c7\u30fc\u30bf\u304c\u3001\u5143\u306b\u623b\u3063\u3066\u3057\u307e\u3046\u3093\u3060\u3051\u3069\u2026
\n\u30fbhas_many\u306e\u95a2\u4fc2\u3092\u6301\u3064\u5165\u308c\u5b50\u306e\u30c7\u30fc\u30bf\u3092\u4e00\u62ec\u3057\u3066\u66f4\u65b0\u3059\u308b\u65b9\u6cd5\u306f\u306a\u3044\u3082\u306e\u304b\uff1f
\n\u30fb\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3059\u308b\u307e\u3067\u3082\u306a\u3044\u3088\u3046\u306aattributes\u3092\u7c21\u5358\u306b\u4fdd\u6301\u3057\u3066\u304a\u304f\u3053\u3068\u306f\u3067\u304d\u306a\u3044\uff1f<\/div>\n

\u3068\u3044\u3063\u305f\u7591\u554f\u306b\u7b54\u3048\u308b\u8a18\u4e8b\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u4f8b\u306b\u3088\u3063\u3066\u3001\u52d5\u4f5c\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306eWeb\u30a2\u30d7\u30ea\u3092\u4f5c\u308b\u3053\u3068\u304b\u3089\u59cb\u3081\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u5b9f\u969b\u306b\u64cd\u4f5c\u3092\u3057\u306a\u304c\u3089\u3001\u52d5\u4f5c\u3092\u7406\u89e3\u3057\u3066\u3044\u3063\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n

\u305d\u308c\u3067\u306f\u3001\u59cb\u3081\u307e\u3057\u3087\u3046\u3002<\/p>\n

Active Record\u304a\u3088\u3073O\/R\u30de\u30c3\u30d1\u30fc\u3068\u306f<\/h2>\n

Active Record<\/strong><\/span>\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3055\u308c\u308b\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u6271\u3046\u305f\u3081\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002<\/p>\n

Rails\u3067\u306f\u3001Active Record\u3092\u901a\u3057\u3066\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3057\u305f\u308a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3057\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n

O\/R\u30de\u30c3\u30d1\u30fc<\/strong><\/span>\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3068\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u6a4b\u6e21\u3057\u3059\u308b\u5f79\u76ee\u3092\u62c5\u3046\u30e2\u30ce\u3067\u3059\u3002<\/p>\n

\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u30c7\u30fc\u30bf\u3092\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u5229\u7528\u3059\u308b\u306b\u306f\u3001SQL\u6587\u3092\u5229\u7528\u3057\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3057\u3001\u305d\u306e\u30c7\u30fc\u30bf\u3092\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u6271\u3046\u5909\u6570\u306b\u683c\u7d0d\u3057\u307e\u3059\u3002<\/p>\n

\u3053\u306e\u51e6\u7406\u3092\u30b9\u30e0\u30fc\u30ba\u306b\u884c\u3046\u30e2\u30ce\u304cO\/R\u30de\u30c3\u30d1\u30fc\u3067\u3059\u3002<\/p>\n

Rails\u3067\u306fActive Record\u306bO\/R\u30de\u30c3\u30d1\u30fc\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u305f\u3081\u3001Active Record\u3092\u4f7f\u3048\u3070\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3057\u305f\u308a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3057\u305f\u308a\u3068\u3044\u3063\u305f\u51e6\u7406\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u884c\u3048\u308b<\/strong><\/span>\u3001\u3068\u8003\u3048\u308c\u3070\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n

attributes\u3068\u306f<\/h2>\n

\u3053\u306e\u8a18\u4e8b\u3067\u53d6\u308a\u6271\u3046attributes<\/strong><\/span>\u306f\u3001\u30e2\u30c7\u30eb\u306b\u542b\u307e\u308c\u308b\u3059\u3079\u3066\u306e\u5c5e\u6027<\/strong><\/span>\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n

\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067User\u30e2\u30c7\u30eb\u3092\u4f5c\u6210\u3057\u305f\u3068\u304d\u306b\u3001<\/p>\n

bin\/rails generate scaffold User name:string<\/pre>\n
\u300c@user.name\u300d\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u300cname\u300d\u306e\u3053\u3068\u3092\u3001attributes\u3068\u547c\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n
\u52d5\u4f5c\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306eWeb\u30a2\u30d7\u30ea\u3092\u4f5c\u6210\u3059\u308b<\/h2>\n
attributes\u306e\u53d6\u308a\u6271\u3044\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3001Rails\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066Web\u30a2\u30d7\u30ea\u3092\u4f5c\u308a\u307e\u3057\u3087\u3046\u3002<\/p>\n
\uff081\uff09Rails<\/strong><\/span>\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002<\/p>\n
\u79c1\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3092\u53c2\u8003\u306b\u3001VirtualBox\u3067\u4f5c\u6210\u3057\u305f\u4eee\u60f3\u30d1\u30bd\u30b3\u30f3\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305fLinux Mint\u306b\u3001Rails\u306e\u958b\u767a\u74b0\u5883\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002<\/p>\n
\u57fa\u672c\u7684\u306b\u306f\u8a18\u4e8b\u306e\u624b\u9806\u306b\u5f93\u3063\u3066\u64cd\u4f5c\u3057\u307e\u3059\u304c\u3001app\/samurai\/sample1\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3059\u308b\u4ee3\u308f\u308a\u306b\u3001app\/samurai\/attributes-demo\u30c7\u30a3\u30ec\u30af\u30c8\u30ea<\/strong><\/span>\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002<\/p>\n
Rails\u3092\u8d77\u52d5\u3057\u3066\u3001\u30d6\u30e9\u30a6\u30b6\u3067\u753b\u9762\u304c\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u305f\u3089\u3001\u3044\u3063\u305f\u3093Rails\u3092\u7d42\u4e86\u3057\u3066\u304b\u3089\u6b21\u306b\u9032\u307f\u307e\u3059\u3002<\/p>\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
\u521d\u5fc3\u8005\u3067\u3082\u304b\u3093\u305f\u3093\uff01Ruby on Rails \u306e\u958b\u767a\u74b0\u5883\u306e\u69cb\u7bc9\u624b\u9806\uff08Mac\/Windows \u4e21\u5bfe\u5fdc\uff09<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n
Linux Mint\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
Linux Mint Cinnamon\u30a8\u30c7\u30a3\u30b7\u30e7\u30f3\u3092\u4f7f\u3063\u3066\u307f\u3088\u3046<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n
\uff082\uff09Gemfile<\/strong><\/span>\u306e\u6700\u7d42\u884c\u306b\u4ee5\u4e0b\u306e\u5185\u5bb9\u3092\u8ffd\u8a18\u3057\u307e\u3059\u3002<\/p>\n
gem 'hirb'\r\ngem 'hirb-unicode'<\/pre>\n
Hirb\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u3042\u308f\u305b\u3066\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
\u3010Rails\u5165\u9580\u3011\u521d\u5fc3\u8005\u304c\u77e5\u3063\u3066\u304a\u304f\u3079\u304d3\u3064\u306egem<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n
\uff083\uff09\u65b0\u3057\u3044\u300c\u7aef\u672b\u300d<\/strong><\/span>\u3092\u8d77\u52d5\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u30921\u884c\u305a\u3064\u9806\u756a\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
cd app\/samurai\/attributes-demo\r\nbundle install\r\nbin\/rails generate scaffold User name:string\r\nbin\/rails generate scaffold Post user_id:integer title:string month:integer\r\nbin\/rails db:migrate\r\nbin\/rails console<\/pre>\n
\uff084\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u30921\u884c\u305a\u3064\u9806\u756a\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
User.create(name:\"\u5c71\u7530\u592a\u90ce\")\r\nUser.create(name:\"\u9577\u702c\u6765\")\r\nUser.create(name:\"\u7acb\u5ddd\u88d5\u7f8e\")\r\nUser.create(name:\"\u524d\u7530\u9054\u90ce\")\r\nUser.create(name:\"\u7d30\u5ddd\u4fee\u4e8c\")\r\nUser.create(name:\"\u6728\u6751\u62d3\u78e8\")\r\nPost.create(user_id:5, title:\"\u697d\u3057\u3044\u4f11\u65e5\u306e\u904e\u3054\u3057\u65b9\", month:3)\r\nPost.create(user_id:1, title:\"\u5148\u65e5\u306e\u65c5\u884c\u3067\u306e\u8a71\", month:2)\r\nPost.create(user_id:3, title:\"\u6628\u65e5\u306e\u51fa\u6765\u4e8b\", month:12)\r\nPost.create(user_id:3, title:\"\u5c71\u767b\u308a\u306b\u884c\u304d\u307e\u3057\u305f\", month:8)\r\nPost.create(user_id:4, title:\"\u53cb\u4eba\u304c\u7d50\u5a5a\u3057\u307e\u3057\u305f\", month:4)\r\nPost.create(user_id:2, title:\"\u6700\u8fd1\u5c11\u3057\u6c17\u306b\u306a\u3063\u305f\u3053\u3068\", month:1)\r\nPost.create(user_id:4, title:\"\u30e9\u30f3\u30cb\u30f3\u30b0\u306e\u30b3\u30c4\", month:9)\r\nPost.create(user_id:3, title:\"Ruby on Rails\u306e\u65e5\", month:9)\r\nexit<\/pre>\n
User\u30c6\u30fc\u30d6\u30eb\u3068Post\u30c6\u30fc\u30d6\u30eb\u306b\u30c7\u30fc\u30bf\u304c\u5165\u529b\u3055\u308c\u3001Rails\u30b3\u30f3\u30bd\u30fc\u30eb\u304c\u7d42\u4e86\u3057\u307e\u3059\u3002<\/p>\n
\u6b21\u306bUser\u30c6\u30fc\u30d6\u30eb\u3068Post\u30c6\u30fc\u30d6\u30eb\u3092\u95a2\u9023\u4ed8\u3051\u307e\u3059\u3002<\/p>\n
\uff085\uff09app\/models\/user.rb<\/strong><\/span>\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u7de8\u96c6\u3057\u307e\u3059\u3002<\/p>\n
\u5909\u66f4\u524d\uff1a<\/p>\n
class User < ApplicationRecord\r\nend<\/pre>\n
\u5909\u66f4\u5f8c\uff1a<\/p>\n
class User < ApplicationRecord\r\n  has_many :posts\r\n  accepts_nested_attributes_for :posts\r\nend<\/pre>\n
\uff086\uff09app\/models\/post.rb<\/strong><\/span>\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u7de8\u96c6\u3057\u307e\u3059\u3002<\/p>\n
\u5909\u66f4\u524d\uff1a<\/p>\n
class Post < ApplicationRecord\r\nend<\/pre>\n
\u5909\u66f4\u5f8c\uff1a<\/p>\n
class Post < ApplicationRecord\r\n  belongs_to :user\r\nend<\/pre>\n
\u3053\u308c\u3067\u3001\u6e96\u5099\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n
\u30c7\u30fc\u30bf\u306eattributes\u3092\u66f4\u65b0\u3059\u308b<\/h2>\n
\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30c7\u30fc\u30bf\u306eattributes\u3092\u66f4\u65b0\u3059\u308b\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n
\u307e\u305a\u306f\u3001\u4fdd\u5b58\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u304c\u7570\u306a\u308b2\u3064\u306e\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u30c7\u30fc\u30bf\u306eattributes\u3092\u4e00\u62ec\u3067\u66f4\u65b0\u3057\u3066\u3042\u3068\u3067\u4fdd\u5b58\u3059\u308b\u5834\u5408<\/h3>\n
\u30c7\u30fc\u30bf\u306eattributes\u3092\u4e00\u62ec\u3067\u66f4\u65b0\u3057\u3066\u3001\u3042\u3068\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3059\u308b\u65b9\u6cd5<\/strong><\/span>\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n
\u5177\u4f53\u7684\u306b\u306f\u3001attributes<\/strong><\/span>\u307e\u305f\u306fassign_attributes<\/strong><\/span>\u3092\u4f7f\u3063\u3066attributes\u3092\u4e00\u62ec\u3067\u66f4\u65b0\u3057\u3001save<\/strong><\/span>\u3092\u4f7f\u3063\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002<\/p>\n
\uff081\uff09\u300c\u7aef\u672b\u300d<\/strong><\/span>\u3067\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
bin\/rails console<\/pre>\n
\uff082\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u30921\u884c\u305a\u3064\u9806\u756a\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
Hirb.enable\r\n@post = Post.find(1)\r\n@post.attributes = { title: '\u65e5\u66dc\u65e5\u3068\u795d\u65e5\u306e\u671d\u3054\u306f\u3093', month: 5 }\r\n@post<\/pre>\n
1\u756a\u76ee\u306ePost\u30c7\u30fc\u30bf\u306eattributes\uff08title\u3068month\uff09\u304c\u4e00\u62ec\u3067\u66f4\u65b0\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
+----+---------+------------------------+-------+-------------------------+-------------------------+\r\n| id | user_id | title                  | month | created_at              | updated_at              |\r\n+----+---------+------------------------+-------+-------------------------+-------------------------+\r\n| 1  | 5       | \u65e5\u66dc\u65e5\u3068\u795d\u65e5\u306e\u671d\u3054\u306f\u3093 | 5     | 2018-07-17 14:20:46 UTC | 2018-07-17 14:20:46 UTC |\r\n+----+---------+------------------------+-------+-------------------------+-------------------------+\r\n1 row in set<\/pre>\n
\u306a\u304a\u30013\u884c\u76ee\u306e\u30b3\u30fc\u30c9\u306f\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3067\u3082\u540c\u3058\u52d5\u4f5c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
@post.assign_attributes({ title: '\u65e5\u66dc\u65e5\u3068\u795d\u65e5\u306e\u671d\u3054\u306f\u3093', month: 5 })<\/pre>\n
\u305f\u3060\u3057\u3001\u3053\u306e\u6642\u70b9\u3067\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u306f\u4fdd\u5b58\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n
\u3044\u3063\u305f\u3093Rails\u30b3\u30f3\u30bd\u30fc\u30eb\u3092\u518d\u8d77\u52d5\u3057\u3066\u30011\u756a\u76ee\u306ePost\u30c7\u30fc\u30bf\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\uff083\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
exit<\/pre>\n
Rails\u30b3\u30f3\u30bd\u30fc\u30eb\u304c\u7d42\u4e86\u3057\u307e\u3059\u3002<\/p>\n
\uff084\uff09\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
bin\/rails console<\/pre>\n
\uff085\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
Hirb.enable\r\n@post = Post.find(1)<\/pre>\n
\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
  Post Load (0.3ms)  SELECT  \"posts\".* FROM \"posts\" WHERE \"posts\".\"id\" = ? LIMIT ?  [[\"id\", 1], [\"LIMIT\", 1]]\r\n+----+---------+----------------------+-------+-------------------------+-------------------------+\r\n| id | user_id | title                | month | created_at              | updated_at              |\r\n+----+---------+----------------------+-------+-------------------------+-------------------------+\r\n| 1  | 5       | \u697d\u3057\u3044\u4f11\u65e5\u306e\u904e\u3054\u3057\u65b9 | 3     | 2018-07-17 14:20:46 UTC | 2018-07-17 14:20:46 UTC |\r\n+----+---------+----------------------+-------+-------------------------+-------------------------+\r\n1 row in set<\/pre>\n
\u6b8b\u5ff5\u306a\u304c\u3089\u5143\u306e\u5185\u5bb9\u306b\u623b\u3063\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u5148\u307b\u3069\u306eattributes\u3067\u5909\u66f4\u3057\u305f\u5185\u5bb9\u304c\u4fdd\u5b58\u3055\u308c\u3066\u3044\u306a\u3044<\/strong><\/span>\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n
\uff086\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u30921\u884c\u305a\u3064\u9806\u756a\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
@post.attributes = { title: '\u65e5\u66dc\u65e5\u3068\u795d\u65e5\u306e\u671d\u3054\u306f\u3093', month: 5 }\r\n@post.save()\r\nexit<\/pre>\n
@post.save()\u3092\u5b9f\u884c\u3057\u305f\u305f\u3081\u3001\u4eca\u5ea6\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n
\u540c\u3058\u3088\u3046\u306b\u3044\u3063\u305f\u3093Rails\u30b3\u30f3\u30bd\u30fc\u30eb\u3092\u518d\u8d77\u52d5\u3057\u3066\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\uff087\uff09\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
bin\/rails console<\/pre>\n
\uff088\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u30921\u884c\u305a\u3064\u9806\u756a\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
Hirb.enable\r\n@post = Post.find(1)<\/pre>\n
\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
  Post Load (0.2ms)  SELECT  \"posts\".* FROM \"posts\" WHERE \"posts\".\"id\" = ? LIMIT ?  [[\"id\", 1], [\"LIMIT\", 1]]\r\n+----+---------+------------------------+-------+-------------------------+-------------------------+\r\n| id | user_id | title                  | month | created_at              | updated_at              |\r\n+----+---------+------------------------+-------+-------------------------+-------------------------+\r\n| 1  | 5       | \u65e5\u66dc\u65e5\u3068\u795d\u65e5\u306e\u671d\u3054\u306f\u3093 | 5     | 2018-07-17 14:20:46 UTC | 2018-07-17 14:28:07 UTC |\r\n+----+---------+------------------------+-------+-------------------------+-------------------------+\r\n1 row in set<\/pre>\n
\u4eca\u5ea6\u306f\u3057\u3063\u304b\u308a\u3068\u4fdd\u5b58\u3055\u308c\u3066\u3044\u307e\u3059\u306d\uff01<\/strong><\/span><\/p>\n
\u30c7\u30fc\u30bf\u306eattribute\u3092\u4e00\u62ec\u3067\u66f4\u65b0\u3057\u3066\u3059\u3050\u306b\u4fdd\u5b58\u3059\u308b\u5834\u5408<\/h3>\n
\u30c7\u30fc\u30bf\u306eattribute\u3092\u4e00\u62ec\u3067\u66f4\u65b0\u3057\u3066\u3001\u3059\u3050\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3059\u308b\u65b9\u6cd5<\/strong><\/span>\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n
\u5177\u4f53\u7684\u306b\u306f\u3001update_attributes<\/strong><\/span>\u3092\u4f7f\u3063\u3066\u30c7\u30fc\u30bf\u3092\u4e00\u62ec\u3067\u66f4\u65b0\u3057\u307e\u3059\u3002<\/p>\n
\uff081\uff09\u300c\u7aef\u672b\u300d<\/strong><\/span>\u3067\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
bin\/rails console<\/pre>\n
\uff082\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u30921\u884c\u305a\u3064\u9806\u756a\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
@post = Post.find(1)\r\n@post.update_attributes({ user_id: 2, title: '\u91d1\u66dc\u65e5\u306e\u30c7\u30a3\u30ca\u30fc', month: 2 })\r\nexit<\/pre>\n
\u4f8b\u306b\u3088\u3063\u3066\u3001Rails\u30b3\u30f3\u30bd\u30fc\u30eb\u3092\u518d\u8d77\u52d5\u3057\u3066\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\uff083\uff09\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
bin\/rails console<\/pre>\n
\uff084\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
Hirb.enable\r\n@post = Post.find(1)<\/pre>\n
\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
  Post Load (0.1ms)  SELECT  \"posts\".* FROM \"posts\" WHERE \"posts\".\"id\" = ? LIMIT ?  [[\"id\", 1], [\"LIMIT\", 1]]\r\n+----+---------+------------------+-------+-------------------------+-------------------------+\r\n| id | user_id | title            | month | created_at              | updated_at              |\r\n+----+---------+------------------+-------+-------------------------+-------------------------+\r\n| 1  | 2       | \u91d1\u66dc\u65e5\u306e\u30c7\u30a3\u30ca\u30fc | 2     | 2018-07-17 14:20:46 UTC | 2018-07-17 14:33:19 UTC |\r\n+----+---------+------------------+-------+-------------------------+-------------------------+\r\n1 row in set<\/pre>\n
\u3057\u3063\u304b\u308a\u3068\u4fdd\u5b58\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/strong><\/span><\/p>\n
\uff085\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
exit<\/pre>\n
\u30b9\u30c8\u30ed\u30f3\u30b0\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5229\u7528\u3059\u308b<\/h3>\n
\u30b9\u30c8\u30ed\u30f3\u30b0\u30d1\u30e9\u30e1\u30fc\u30bf\uff08Strong Parameter\uff09<\/strong><\/span>\u306f\u3001\u9001\u3089\u308c\u3066\u304d\u305f\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5b89\u5168\u306b\u3001\u30c7\u30fc\u30bf\u306eattributes\u306b\u53cd\u6620\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n
\u30b9\u30c8\u30ed\u30f3\u30b0\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u4f7f\u7528\u305b\u305a\u306b\u767a\u751f\u3059\u308b\u305c\u3044\u5f31\u6027\u3092\u3001\u30de\u30b9\u30a2\u30b5\u30a4\u30f3\u30e1\u30f3\u30c8\uff08Mass Assignment\uff09\u305c\u3044\u5f31\u6027<\/strong><\/span>\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n
\u30b9\u30c8\u30ed\u30f3\u30b0\u30d1\u30e9\u30e1\u30fc\u30bf\u3084\u30de\u30b9\u30a2\u30b5\u30a4\u30f3\u30e1\u30f3\u30c8\u305c\u3044\u5f31\u6027\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u3082\u89e6\u308c\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u3042\u308f\u305b\u3066\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
\u3010Rails\u5165\u9580\u3011params\u4f7f\u3044\u65b9\u307e\u3068\u3081<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n
\u5165\u308c\u5b50\u306e\u30c7\u30fc\u30bf\u306eattributes\u3092\u307e\u3068\u3081\u3066\u66f4\u65b0\u3059\u308b<\/h2>\n
\u3053\u3053\u304b\u3089\u306f\u3001\u5165\u308c\u5b50\u306e\u30c7\u30fc\u30bf\u306eattributes\u3092\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u307e\u3068\u3081\u3066\u66f4\u65b0\u3059\u308b\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n
@user.attributes = {\r\n    name:\"\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u3055\u3093\",\r\n    posts_attributes:[\r\n        {id:3, title: \"\u304d\u306e\u3046\u306e\u3067\u304d\u3054\u3068\"},\r\n        {id:4, title:\"\u3042\u3057\u305f\u306e\u3088\u3066\u3044\", month: 5},\r\n        {id:8, title:\"Rails\u306e\u3072\", month: 10}\r\n    ]\r\n}<\/pre>\n
\uff081\uff09\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
bin\/rails console<\/pre>\n
\uff082\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u30921\u884c\u305a\u3064\u9806\u756a\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
Hirb.enable\r\n@user = User.find(3)\r\n@user.posts<\/pre>\n
\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
  Post Load (0.3ms)  SELECT \"posts\".* FROM \"posts\" WHERE \"posts\".\"user_id\" = ?  [[\"user_id\", 3]]\r\n+----+---------+--------------------+-------+-------------------------+-------------------------+\r\n| id | user_id | title              | month | created_at              | updated_at              |\r\n+----+---------+--------------------+-------+-------------------------+-------------------------+\r\n| 3  | 3       | \u6628\u65e5\u306e\u51fa\u6765\u4e8b       | 12    | 2018-07-17 14:20:46 UTC | 2018-07-17 14:20:46 UTC |\r\n| 4  | 3       | \u5c71\u767b\u308a\u306b\u884c\u304d\u307e\u3057\u305f | 8     | 2018-07-17 14:20:46 UTC | 2018-07-17 14:20:46 UTC |\r\n| 8  | 3       | Ruby on Rails\u306e\u65e5  | 9     | 2018-07-17 14:20:46 UTC | 2018-07-17 14:20:46 UTC |\r\n+----+---------+--------------------+-------+-------------------------+-------------------------+\r\n3 rows in set<\/pre>\n
3\u3064\u306ePost\u30c7\u30fc\u30bf\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u3053\u306e3\u3064\u306ePost\u30c7\u30fc\u30bf\u306eattributes\u3092\u307e\u3068\u3081\u3066\u66f4\u65b0\u3057\u307e\u3059\u3002<\/p>\n
\uff083\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u30921\u884c\u305a\u3064\u9806\u756a\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
@user.attributes = {\r\n    name:\"\u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u3055\u3093\",\r\n    posts_attributes:[\r\n        {id:3, title: \"\u660e\u65e5\u306e\u4e88\u5b9a\"},\r\n        {id:4, title: \"\u6d77\u6c34\u6d74\u306b\u884c\u304d\u307e\u3057\u3087\u3046\"},\r\n        {id:8, title: \"Ruby on Rails\u52c9\u5f37\u4f1a\", month: 10}\r\n    ]\r\n}\r\n@user.posts<\/pre>\n
\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
+----+---------+----------------------+-------+-------------------------+-------------------------+\r\n| id | user_id | title                | month | created_at              | updated_at              |\r\n+----+---------+----------------------+-------+-------------------------+-------------------------+\r\n| 3  | 3       | \u660e\u65e5\u306e\u4e88\u5b9a           | 12    | 2018-07-17 14:20:46 UTC | 2018-07-17 14:20:46 UTC |\r\n| 4  | 3       | \u6d77\u6c34\u6d74\u306b\u884c\u304d\u307e\u3057\u3087\u3046 | 8     | 2018-07-17 14:20:46 UTC | 2018-07-17 14:20:46 UTC |\r\n| 8  | 3       | Ruby on Rails\u52c9\u5f37\u4f1a  | 10    | 2018-07-17 14:20:46 UTC | 2018-07-17 14:20:46 UTC |\r\n+----+---------+----------------------+-------+-------------------------+-------------------------+\r\n3 rows in set<\/pre>\n
\u3053\u306e\u30b3\u30fc\u30c9\u304c\u4e88\u60f3\u3069\u304a\u308a\u306b\u52d5\u4f5c\u3059\u308b\u306e\u306f\u3001app\/models\/user.rb<\/strong><\/span>\u306b\u3001accepts_nested_attributes_for :posts<\/strong><\/span>\u3092\u66f8\u3044\u305f\u305f\u3081\u3067\u3059\u3002<\/p>\n
\u3067\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3057\u3066\u304b\u3089\u3001Rails\u30b3\u30f3\u30bd\u30fc\u30eb\u3092\u7d42\u4e86\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
\uff084\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u30921\u884c\u305a\u3064\u9806\u756a\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
@user.save\r\nexit<\/pre>\n
Virtual Attributes\u3092\u5229\u7528\u3059\u308b<\/h2>\n
Virtual Attributes<\/strong><\/span>\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u5b58\u5728\u305b\u305aModel\u306b\u3060\u3051\u5b58\u5728\u3059\u308battributes<\/strong><\/span>\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n
\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u5b58\u5728\u3057\u3066\u3044\u305f\u65b9\u304c\u4fbf\u5229\u306aattributes\u3092\u8a18\u9332\u3057\u3066\u304a\u304f\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n
\u3053\u3053\u3067\u306f\u3001\u7c21\u5358\u306aVirtual Attributes\u3068\u3057\u3066\u3001User\u30c6\u30fc\u30d6\u30eb\u306ename\u306e\u6587\u5b57\u6570\u3092\u3001name_length\u306b\u4e00\u6642\u7684\u306b\u8a18\u9332\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\uff081\uff09app\/models\/user.rb<\/strong><\/span>\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u7de8\u96c6\u3057\u307e\u3059\u3002<\/p>\n
\u5909\u66f4\u524d\uff1a<\/p>\n
class User < ApplicationRecord\r\n  has_many :posts\r\n  accepts_nested_attributes_for :posts\r\nend<\/pre>\n
\u5909\u66f4\u5f8c\uff1a<\/p>\n
class User < ApplicationRecord\r\n  has_many :posts\r\n  accepts_nested_attributes_for :posts\r\n  attr_accessor :name_length\r\nend<\/pre>\n
\uff082\uff09\u300c\u7aef\u672b\u300d<\/strong><\/span>\u3067\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u30921\u884c\u305a\u3064\u9806\u756a\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
bin\/rails console<\/pre>\n
\uff083\uff09\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u30921\u884c\u305a\u3064\u9806\u756a\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n
@user = User.find(1)\r\n@user.name_length = @user.name.length<\/pre>\n
\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n
=> 4<\/pre>\n
@user.name_length\u306b\u5024\u3092\u767b\u9332\u3067\u304d\u308b\u306e\u306f\u3001app\/models\/user.rb<\/strong><\/span>\u306b\u3001attr_accessor :name_length<\/strong><\/span>\u3092\u8ffd\u52a0\u3057\u305f\u305f\u3081\u3067\u3059\u3002<\/p>\n
\u305f\u3068\u3048\u3070\u3001@user.dummy = 4\u3068\u3044\u3063\u305f\u3088\u3046\u306b\u9069\u5f53\u306aattributes\u3092\u3067\u3063\u3061\u4e0a\u3052\u3066\u30c7\u30fc\u30bf\u3092\u767b\u9332\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/strong><\/span><\/p>\n
\u306a\u304a\u3001name_length\u306b\u3064\u3044\u3066\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u3001Rails\u30b3\u30f3\u30bd\u30fc\u30eb\u3092\u518d\u8d77\u52d5\u3059\u308b\u3068\u3001nil\u306b\u623b\u308a\u307e\u3059\u306e\u3067\u3001\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
attr_accessor<\/strong><\/span>\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u3082\u89e6\u308c\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u8208\u5473\u306e\u3042\u308b\u65b9\u306f\u3054\u89a7\u3044\u305f\u3060\u3051\u308c\u3070\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
\u3010Ruby\u5165\u9580\u3011attr_accessor\u306e\u4f7f\u3044\u65b9\u307e\u3068\u3081<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n
\u307e\u3068\u3081<\/h2>\n
\u4eca\u56de\u306fActive Record\uff08O\/R\u30de\u30c3\u30d1\u30fc\uff09<\/strong><\/span>\u3068\u30c7\u30fc\u30bf\u306eattributes<\/strong><\/span>\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3001\u30c7\u30fc\u30bf\u306eattributes\u3092\u66f4\u65b0\u3059\u308b\u65b9\u6cd5\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/strong><\/span><\/p>\n
\u521d\u3081\u306b\u3001\u30c7\u30fc\u30bf\u30921\u3064\u53d6\u308a\u51fa\u3057\u3066\u3001\u305d\u306e\u30c7\u30fc\u30bf\u306eattributes\u3092\u66f4\u65b0\u3059\u308b\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/p>\n
attributes<\/strong><\/span>\u307e\u305f\u306fassign_attributes<\/strong><\/span>\u3092\u4f7f\u3046\u3060\u3051\u3067\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u6700\u5f8c\u306bsave\u304c\u5fc5\u8981\u3067\u3057\u305f\u3002<\/strong><\/span><\/p>\n
\u307e\u305f\u3001update_attributes<\/strong><\/span>\u3092\u4f7f\u3046\u3068\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3055\u308c\u308b\u305f\u3081\u3001\u6700\u5f8c\u306esave\u306f\u4e0d\u8981\u3067\u3057\u305f\u3002<\/strong><\/span><\/p>\n
\u5c11\u3057\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u304b\u305f\u3068\u3057\u3066\u3001\u5165\u308c\u5b50\u306e\uff08has_many\u306e\u95a2\u4fc2\u306b\u3042\u308b\uff09\u30c7\u30fc\u30bf\u3092\u3001attributes\u3001assign_attributes\u3001\u307e\u305f\u306fupdate_attributes\u3092\u4f7f\u3063\u3066\u4e00\u62ec\u3067\u66f4\u65b0\u3059\u308b\u305f\u3081\u306b\u306f\u3001accepts_nested_attributes_for<\/strong><\/span>\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u3082\u8aac\u660e\u3057\u307e\u3057\u305f\u306d\u3002<\/p>\n
\u6700\u5f8c\u306b\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u306f\u4fdd\u5b58\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044\u3082\u306e\u306e\u3001\u3042\u308b\u3068\u4fbf\u5229\u306aattributes\uff08Virtual Attributes<\/strong><\/span>\u3068\u547c\u3070\u308c\u308battributes\uff09\u3092\u5b9a\u7fa9\u3059\u308b\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n
attributes\u3092\u66f4\u65b0\u3059\u308b\u3068\u3044\u3063\u3066\u3082\u69d8\u3005\u306a\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u6700\u3082\u9069\u5207\u306a\u65b9\u6cd5\u3092\u691c\u8a0e\u3057\u3001\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/strong><\/span><\/p>\n
\u305d\u308c\u3067\u306f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4eca\u65e5\u306f\u3001Ruby on Rails\uff08\u4ee5\u964d\u3001Rails\uff09\u306eActive Record\uff08O\/R\u30de\u30c3\u30d1\u30fc\uff09\u3067\u3001attributes\u3092\u66f4\u65b0\u3059\u308b\u65b9\u6cd5\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002 \u30fbattribute\u3084assign_attributes\u3067 […]<\/p>\n","protected":false},"author":16433,"featured_media":64405,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"swell_btn_cv_data":"","footnotes":""},"categories":[2352],"tags":[],"class_list":["post-64345","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ruby-study"],"acf":[],"yoast_head":"\n\u3010Rails\u5165\u9580\u3011Active Record\uff08O\/R\u30de\u30c3\u30d1\u30fc\uff09\u3067attributes\u3092\u66f4\u65b0\u3059\u308b\u65b9\u6cd5 | \u4f8d\u30a8\u30f3\u30b8\u30cb\u30a2\u30d6\u30ed\u30b0<\/title>\n<meta name=\"description\" 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