Ruby on Rails\uff08\u7565\u79f0\uff1aRails\uff09\u306f\u30012004\u5e74\u306bDavid Heinemeier Hansson\u306b\u3088\u3063\u3066\u958b\u767a\u3055\u308c\u305f\u9769\u65b0\u7684\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3059\u3002Rails\u306f\u300c\u8a2d\u5b9a\u3088\u308a\u898f\u7d04\u300d\uff08Convention over Configuration\uff09\u3068\u300c\u540c\u3058\u3053\u3068\u3092\u7e70\u308a\u8fd4\u3055\u306a\u3044\u300d\uff08Don\u2019t Repeat Yourself\uff1aDRY\uff09\u3068\u3044\u30462\u3064\u306e\u91cd\u8981\u306a\u8a2d\u8a08\u601d\u60f3\u3092\u57fa\u306b\u4f5c\u3089\u308c\u3066\u304a\u308a\u3001\u3053\u308c\u3089\u306e\u601d\u60f3\u306b\u3088\u308a\u958b\u767a\u52b9\u7387\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u306b\u6210\u529f\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n
\u76ee\u6b21 <\/p>\n
Rails\u304c\u958b\u767a\u901f\u5ea6\u3092\u5287\u7684\u306b\u5411\u4e0a\u3055\u305b\u308b\u7406\u7531\u306f\u3001\u4ee5\u4e0b\u306e\u9769\u65b0\u7684\u306a\u6a5f\u80fd\u306b\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n
# \u305f\u3063\u305f1\u884c\u306e\u30b3\u30de\u30f3\u30c9\u3067\u30d6\u30ed\u30b0\u6a5f\u80fd\u306e\u57fa\u672c\u7684\u306a\u30b3\u30fc\u30c9\u3092\u751f\u6210\n rails generate scaffold Post title:string content:text<\/pre>\n\n\n\n\u3053\u306e\u30b3\u30de\u30f3\u30c91\u3064\u3067\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u3001\u30e2\u30c7\u30eb\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u3001\u30d3\u30e5\u30fc\u3001\u305d\u3057\u3066\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u307e\u3067\u3082\u304c\u81ea\u52d5\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
\n
- Active Record<\/strong><\/li>\n<\/ol>\n\n\n\n
# \u8907\u96d1\u306aSQL\u3092\u66f8\u304b\u305a\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u304c\u53ef\u80fd\n class User < ApplicationRecord\n has_many :posts\n validates :email, presence: true\n end\n\n # \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u304c\u76f4\u611f\u7684\u306b\n User.where(age: 20..30).order(created_at: :desc)<\/pre>\n\n\n\n\n
- \u30a2\u30bb\u30c3\u30c8\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3<\/strong>
JavaScript\u3084CSS\u306e\u6700\u9069\u5316\u3001\u753b\u50cf\u306e\u5727\u7e2e\u306a\u3069\u304c\u81ea\u52d5\u3067\u884c\u308f\u308c\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u306e\u624b\u9593\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n\u4e16\u754c\u4e2d\u306e\u6709\u540d\u30b5\u30fc\u30d3\u30b9\u304cRails\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u5b9f\u4f8b<\/h2>\n\n\n\n
Rails\u306f\u591a\u304f\u306e\u8457\u540d\u306a\u30b5\u30fc\u30d3\u30b9\u3067\u63a1\u7528\u3055\u308c\u3066\u304a\u308a\u3001\u305d\u306e\u62e1\u5f35\u6027\u3068\u4fdd\u5b88\u6027\u306e\u9ad8\u3055\u304c\u8a3c\u660e\u3055\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n
\n
\u30b5\u30fc\u30d3\u30b9\u540d<\/th> \u63a1\u7528\u7406\u7531<\/th> \u7279\u7b46\u3059\u3079\u304d\u70b9<\/th><\/tr><\/thead> GitHub<\/td> \u9ad8\u3044\u62e1\u5f35\u6027<\/td> \u6570\u767e\u4e07\u306e\u30ea\u30dd\u30b8\u30c8\u30ea\u3092\u7ba1\u7406<\/td><\/tr> Shopify<\/td> \u5b89\u5b9a\u6027<\/td> \u5e74\u95931000\u5104\u30c9\u30eb\u4ee5\u4e0a\u306e\u53d6\u5f15\u3092\u51e6\u7406<\/td><\/tr> Airbnb<\/td> \u958b\u767a\u901f\u5ea6<\/td> \u77ed\u671f\u9593\u3067\u306e\u30b0\u30ed\u30fc\u30d0\u30eb\u5c55\u958b\u3092\u5b9f\u73fe<\/td><\/tr> Twitter\uff08\u521d\u671f\uff09<\/td> \u8fc5\u901f\u306a\u6a5f\u80fd\u958b\u767a<\/td> \u6025\u6210\u9577\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u57fa\u76e4\u306b\u5bfe\u5fdc<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n \u3053\u308c\u3089\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u793a\u3059\u3088\u3046\u306b\u3001Rails\u306f\u5c0f\u898f\u6a21\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304b\u3089\u5927\u898f\u6a21\u306a\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u30b7\u30b9\u30c6\u30e0\u307e\u3067\u3001\u5e45\u5e83\u3044\u898f\u6a21\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u5b9f\u7e3e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u7279\u306b\u6ce8\u76ee\u3059\u3079\u304d\u306f\u3001\u3053\u308c\u3089\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u6025\u6210\u9577\u30d5\u30a7\u30fc\u30ba\u3067\u3082Rails\u3092\u63a1\u7528\u3057\u7d9a\u3051\u305f\u3053\u3068\u3067\u3059\u3002\u305d\u306e\u7406\u7531\u3068\u3057\u3066\u4ee5\u4e0b\u304c\u6319\u3052\u3089\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n
\n
- \u751f\u7523\u6027\u306e\u7dad\u6301<\/strong>: \u898f\u6a21\u304c\u5927\u304d\u304f\u306a\u3063\u3066\u3082\u958b\u767a\u901f\u5ea6\u3092\u7dad\u6301\u3067\u304d\u308b<\/li>\n\n\n\n
- \u30b3\u30fc\u30c9\u306e\u54c1\u8cea<\/strong>: \u6a19\u6e96\u7684\u306a\u898f\u7d04\u306b\u3088\u308a\u3001\u65b0\u898f\u53c2\u753b\u8005\u3067\u3082\u8fc5\u901f\u306b\u30ad\u30e3\u30c3\u30c1\u30a2\u30c3\u30d7\u53ef\u80fd<\/li>\n\n\n\n
- \u8c4a\u5bcc\u306a\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0<\/strong>: \u6570\u591a\u304f\u306egem\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u3088\u308a\u3001\u5fc5\u8981\u306a\u6a5f\u80fd\u3092\u5bb9\u6613\u306b\u8ffd\u52a0\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n
\u3053\u306e\u3088\u3046\u306b\u3001Ruby on Rails\u306f\u73fe\u4ee3\u306eWeb\u958b\u767a\u306b\u304a\u3044\u3066\u3001\u751f\u7523\u6027\u3068\u54c1\u8cea\u306e\u4e21\u7acb\u3092\u5b9f\u73fe\u3059\u308b\u91cd\u8981\u306a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u3057\u3066\u78ba\u56fa\u305f\u308b\u5730\u4f4d\u3092\u7bc9\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
Ruby on Rails\u7fd2\u5f97\u306e\u30e1\u30ea\u30c3\u30c8<\/h1>\n\n\n\n
\u9ad8\u984d\u306a\u6848\u4ef6\u3092\u7372\u5f97\u3067\u304d\u308b\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u306e\u5b9f\u614b<\/h2>\n\n\n\n
Ruby on Rails\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u3057\u3066\u306e\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u5e02\u5834\u306f\u3001\u7279\u306b\u4ee5\u4e0b\u306e\u70b9\u3067\u9b45\u529b\u7684\u306a\u6a5f\u4f1a\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n
\u6848\u4ef6\u5358\u4fa1\u306e\u5b9f\u614b<\/h3>\n\n\n
\n
\u7d4c\u9a13\u5e74\u6570<\/th> \u5e73\u5747\u5358\u4fa1\uff08\u6708\u984d\uff09<\/th> \u6848\u4ef6\u306e\u7279\u5fb4<\/th><\/tr><\/thead> 1-2\u5e74<\/td> 50-65\u4e07\u5186<\/td> \u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u306e\u4fdd\u5b88\u30fb\u904b\u7528<\/td><\/tr> 3-5\u5e74<\/td> 70-90\u4e07\u5186<\/td> \u65b0\u898f\u958b\u767a\u3001\u6280\u8853\u9078\u5b9a<\/td><\/tr> 5\u5e74\u4ee5\u4e0a<\/td> 90-120\u4e07\u5186<\/td> \u30a2\u30fc\u30ad\u30c6\u30af\u30c8\u3001\u30c1\u30fc\u30e0\u30ea\u30fc\u30c9<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n \u203b2024\u5e744\u6708\u6642\u70b9\u306e\u5e02\u5834\u30c7\u30fc\u30bf\u306b\u57fa\u3065\u304f<\/p>\n\n\n\n
\u9ad8\u5358\u4fa1\u3092\u5b9f\u73fe\u3067\u304d\u308b\u7406\u7531<\/h3>\n\n\n\n
\n
- \u30b9\u30bf\u30fc\u30c8\u30a2\u30c3\u30d7\u3067\u306e\u9700\u8981<\/strong><\/li>\n<\/ol>\n\n\n\n
\n
- MVP\uff08\u6700\u5c0f\u9650\u306e\u88fd\u54c1\uff09\u306e\u8fc5\u901f\u306a\u958b\u767a\u30cb\u30fc\u30ba<\/li>\n\n\n\n
- \u30a2\u30b8\u30e3\u30a4\u30eb\u958b\u767a\u3068\u306e\u89aa\u548c\u6027<\/li>\n\n\n\n
- \u77ed\u671f\u9593\u3067\u306e\u5e02\u5834\u6295\u5165\u8981\u6c42<\/li>\n<\/ul>\n\n\n\n
\n
- \u5927\u898f\u6a21\u30b7\u30b9\u30c6\u30e0\u306e\u30ea\u30d7\u30ec\u30fc\u30b9\u6848\u4ef6<\/strong><\/li>\n<\/ol>\n\n\n\n
\n
- \u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u30e2\u30c0\u30f3\u5316<\/li>\n\n\n\n
- \u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u5316\u5bfe\u5fdc<\/li>\n\n\n\n
- \u30af\u30e9\u30a6\u30c9\u30cd\u30a4\u30c6\u30a3\u30d6\u5316<\/li>\n<\/ul>\n\n\n\n
\u30b9\u30bf\u30fc\u30c8\u30a2\u30c3\u30d7\u4f01\u696d\u304c\u6c42\u3081\u308bRails\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30b9\u30ad\u30eb<\/h2>\n\n\n\n
\u30b9\u30bf\u30fc\u30c8\u30a2\u30c3\u30d7\u4f01\u696d\u304c\u7279\u306b\u91cd\u8996\u3059\u308b\u6280\u8853\u30b9\u30ad\u30eb\u30bb\u30c3\u30c8\uff1a<\/p>\n\n\n\n
\u5fc5\u9808\u30b9\u30ad\u30eb<\/h3>\n\n\n\n
required_skills = {\n basic: [\n 'Ruby\/Rails\u57fa\u672c\u6587\u6cd5',\n 'Git\/GitHub',\n 'RSpec\u7b49\u306e\u30c6\u30b9\u30c6\u30a3\u30f3\u30b0\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af'\n ],\n database: [\n 'SQL\u57fa\u790e',\n 'ActiveRecord\u306e\u7406\u89e3',\n '\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08'\n ],\n web: [\n 'HTML\/CSS',\n 'JavaScript\u57fa\u790e',\n 'REST API\u8a2d\u8a08'\n ]\n}<\/pre>\n\n\n\n\u52a0\u70b9\u8981\u7d20\u3068\u306a\u308b\u30b9\u30ad\u30eb<\/h3>\n\n\n\n
additional_skills = {\n devops: [\n 'AWS\/Heroku\u7b49\u306e\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d3\u30b9',\n 'Docker\/Kubernetes',\n 'CI\/CD\u69cb\u7bc9'\n ],\n architecture: [\n '\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u8a2d\u8a08',\n 'DDD\uff08\u30c9\u30e1\u30a4\u30f3\u99c6\u52d5\u8a2d\u8a08\uff09',\n '\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0'\n ]\n}<\/pre>\n\n\n\n\u3053\u308c\u3089\u306e\u30b9\u30ad\u30eb\u3092\u6bb5\u968e\u7684\u306b\u7fd2\u5f97\u3059\u308b\u3053\u3068\u3067\u3001\u30ad\u30e3\u30ea\u30a2\u306e\u9078\u629e\u80a2\u304c\u5e83\u304c\u308a\u3001\u5e02\u5834\u4fa1\u5024\u306e\u5411\u4e0a\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u7279\u306b\u3001Rails\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u4ee5\u4e0b\u306e\u7279\u5fb4\u304b\u3089\u3001\u7d99\u7d9a\u7684\u306a\u9700\u8981\u304c\u898b\u8fbc\u307e\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n
\n
- \u30b9\u30bf\u30fc\u30c8\u30a2\u30c3\u30d7\u306e\u5275\u696d\u30d5\u30a7\u30fc\u30ba\u3067\u306e\u63a1\u7528\u30cb\u30fc\u30ba<\/li>\n\n\n\n
- \u5927\u898f\u6a21\u30b5\u30fc\u30d3\u30b9\u306e\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u30d5\u30a7\u30fc\u30ba\u3067\u306e\u9700\u8981<\/li>\n\n\n\n
- \u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u3068\u3057\u3066\u306e\u67d4\u8edf\u306a\u50cd\u304d\u65b9\u306e\u5b9f\u73fe<\/li>\n\n\n\n
- \u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u30ea\u30e2\u30fc\u30c8\u30ef\u30fc\u30af\u306e\u6a5f\u4f1a<\/li>\n<\/ul>\n\n\n\n
\u5b9f\u969b\u306b\u3001\u591a\u304f\u306eRails\u30a8\u30f3\u30b8\u30cb\u30a2\u304c1-2\u5e74\u306e\u7d4c\u9a13\u3092\u7a4d\u3093\u3060\u5f8c\u3001\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u3068\u3057\u3066\u72ec\u7acb\u3057\u3001\u8907\u6570\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u4e26\u884c\u3057\u3066\u9032\u3081\u308b\u3053\u3068\u3067\u3001\u5e74\u53ce1000\u4e07\u5186\u4ee5\u4e0a\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u306b\u306f\u6280\u8853\u529b\u3060\u3051\u3067\u306a\u304f\u3001\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u80fd\u529b\u3084\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30de\u30cd\u30b8\u30e1\u30f3\u30c8\u30b9\u30ad\u30eb\u3082\u91cd\u8981\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
Ruby on Rails\u5b66\u7fd2\u306e\u6e96\u5099\u3092\u6574\u3048\u3088\u3046<\/h1>\n\n\n\n
\u958b\u767a\u74b0\u5883\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u624b\u9806<\/h2>\n\n\n\n
1. Ruby\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h3>\n\n\n\n
\u6700\u521d\u306b\u3001Ruby\u306e\u74b0\u5883\u3092\u6574\u3048\u307e\u3059\u3002OS\u5225\u306e\u63a8\u5968\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n
macOS<\/strong>\u306e\u5834\u5408\uff1a<\/p>\n\n\n\n
# Homebrew\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\uff08\u672a\u5c0e\u5165\u306e\u5834\u5408\uff09\n\/bin\/bash -c \"$(curl -fsSL https:\/\/raw.githubusercontent.com\/Homebrew\/install\/HEAD\/install.sh)\"\n\n# rbenv\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\nbrew install rbenv ruby-build\n\n# rbenv\u306e\u521d\u671f\u5316\necho 'eval \"$(rbenv init -)\"' >> ~\/.zshrc\nsource ~\/.zshrc\n\n# Ruby 3.2.2\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\uff082024\u5e744\u6708\u6642\u70b9\u3067\u306e\u63a8\u5968\u30d0\u30fc\u30b8\u30e7\u30f3\uff09\nrbenv install 3.2.2\nrbenv global 3.2.2<\/pre>\n\n\n\nWindows<\/strong>\u306e\u5834\u5408\uff1a<\/p>\n\n\n\n
\n
- WSL2\uff08Windows Subsystem for Linux\uff09\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/li>\n<\/ol>\n\n\n\n
# PowerShell\u3092\u7ba1\u7406\u8005\u3068\u3057\u3066\u5b9f\u884c\nwsl --install<\/pre>\n\n\n\n\n
- WSL2\u4e0a\u3067Ruby\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/li>\n<\/ol>\n\n\n\n
# \u5fc5\u8981\u306a\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\nsudo apt update\nsudo apt install -y build-essential libssl-dev libreadline-dev zlib1g-dev\n\n# rbenv\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\ngit clone https:\/\/github.com\/rbenv\/rbenv.git ~\/.rbenv\necho 'export PATH=\"$HOME\/.rbenv\/bin:$PATH\"' >> ~\/.bashrc\necho 'eval \"$(rbenv init -)\"' >> ~\/.bashrc\nsource ~\/.bashrc\n\n# Ruby 3.2.2\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\nrbenv install 3.2.2\nrbenv global 3.2.2<\/pre>\n\n\n\n2. Rails\u74b0\u5883\u306e\u69cb\u7bc9<\/h3>\n\n\n\n
Ruby\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u5b8c\u4e86\u5f8c\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u3067Rails\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n
# \u6700\u65b0\u306e\u5b89\u5b9a\u7248Rails\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\ngem install rails\n\n# \u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u78ba\u8a8d\nrails -v # Rails 7.1.x \u304c\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u3092\u78ba\u8a8d<\/pre>\n\n\n\n3. \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7<\/h3>\n\n\n\n
\u958b\u767a\u7528\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3068\u3057\u3066SQLite\u3068PostgreSQL\u306e\u4e21\u65b9\u3092\u6e96\u5099\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n
SQLite<\/strong>\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u4f7f\u7528\u53ef\u80fd\uff09\uff1a<\/p>\n\n\n\n
# macOS\u306e\u5834\u5408\nbrew install sqlite3\n\n# Ubuntu\u306e\u5834\u5408\nsudo apt install sqlite3 libsqlite3-dev<\/pre>\n\n\n\nPostgreSQL<\/strong>\uff1a<\/p>\n\n\n\n
# macOS\u306e\u5834\u5408\nbrew install postgresql\nbrew services start postgresql\n\n# Ubuntu\u306e\u5834\u5408\nsudo apt install postgresql postgresql-contrib libpq-dev\nsudo service postgresql start<\/pre>\n\n\n\n\u3064\u307e\u305a\u304d\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5<\/h2>\n\n\n\n
1. \u6a29\u9650\u95a2\u9023\u306e\u30a8\u30e9\u30fc<\/h3>\n\n\n\n
\u75c7\u72b6<\/strong>\uff1agem\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u6a29\u9650\u30a8\u30e9\u30fc\u304c\u767a\u751f<\/p>\n\n\n\n
ERROR: While executing gem ... (Gem::FilePermissionError)<\/pre>\n\n\n\n\u89e3\u6c7a\u7b56<\/strong>\uff1a<\/p>\n\n\n\n
# rbenv\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\nrbenv rehash\n\n# \u307e\u305f\u306f\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u6a29\u9650\u3092\u4fee\u6b63\nsudo chown -R $USER:$USER ~\/.gem<\/pre>\n\n\n\n2. \u4f9d\u5b58\u95a2\u4fc2\u306e\u30a8\u30e9\u30fc<\/h3>\n\n\n\n
\u75c7\u72b6<\/strong>\uff1a
bundle install<\/code>\u5b9f\u884c\u6642\u306e\u30a8\u30e9\u30fc<\/p>\n\n\n\nAn error occurred while installing nokogiri (1.x.x)<\/pre>\n\n\n\n\u89e3\u6c7a\u7b56<\/strong>\uff1a<\/p>\n\n\n\n
# \u5fc5\u8981\u306a\u958b\u767a\u30c4\u30fc\u30eb\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\n# macOS\u306e\u5834\u5408\nxcode-select --install\n\n# Ubuntu\u306e\u5834\u5408\nsudo apt-get install build-essential patch ruby-dev zlib1g-dev liblzma-dev<\/pre>\n\n\n\n3. \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u30a8\u30e9\u30fc<\/h3>\n\n\n\n
\u75c7\u72b6<\/strong>\uff1a
rails db:create<\/code>\u5b9f\u884c\u6642\u306e\u30a8\u30e9\u30fc<\/p>\n\n\n\n\u89e3\u6c7a\u7b56<\/strong>\uff1a<\/p>\n\n\n\n
# PostgreSQL\u306e\u5834\u5408\n# database.yml\u306e\u8a2d\u5b9a\u78ba\u8a8d\nconfig\/database.yml\n\ndevelopment:\n adapter: postgresql\n encoding: unicode\n pool: <%= ENV.fetch(\"RAILS_MAX_THREADS\") { 5 } %>\n username: YOUR_USERNAME\n password: YOUR_PASSWORD<\/pre>\n\n\n\n\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u6210\u529f\u306e\u78ba\u8a8d\u65b9\u6cd5<\/h3>\n\n\n\n
\u65b0\u3057\u3044Rails\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3066\u52d5\u4f5c\u78ba\u8a8d\u3092\u884c\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n
# \u65b0\u898f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210\nrails new my_first_app\n\n# \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3078\u79fb\u52d5\ncd my_first_app\n\n# Web\u30b5\u30fc\u30d0\u30fc\u306e\u8d77\u52d5\nrails server\n\n# \u30d6\u30e9\u30a6\u30b6\u3067 http:\/\/localhost:3000 \u306b\u30a2\u30af\u30bb\u30b9\n# \u300cYay! You're on Rails!\u300d\u304c\u8868\u793a\u3055\u308c\u308c\u3070\u6210\u529f<\/pre>\n\n\n\n\u3053\u308c\u3089\u306e\u624b\u9806\u3067\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u70b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n\n\n\n
\n
- Ruby\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\uff08
ruby -v<\/code>\uff09<\/li>\n\n\n\n- Rails\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u6b63\u3057\u304f\u8868\u793a\u3055\u308c\u308b\u304b\uff08
rails -v<\/code>\uff09<\/li>\n\n\n\n- \u5fc5\u8981\u306a\u4f9d\u5b58\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u5168\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n\n\n\n
- \u30b7\u30b9\u30c6\u30e0\u306e\u30d1\u30b9\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n<\/ul>\n\n\n\n
\u74b0\u5883\u69cb\u7bc9\u306f\u4e00\u5ea6\u3057\u3063\u304b\u308a\u884c\u3048\u3070\u3001\u305d\u306e\u5f8c\u306e\u5b66\u7fd2\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u9032\u307f\u307e\u3059\u3002\u6642\u9593\u3092\u304b\u3051\u3066\u78ba\u5b9f\u306b\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3092\u5b8c\u4e86\u3055\u305b\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
Ruby on Rails\u306e\u57fa\u672c\u6982\u5ff5\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b<\/h1>\n\n\n\n
MVC\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u30fc\u3092\u56f3\u89e3\u3067\u7406\u89e3\u3059\u308b<\/h2>\n\n\n\n
MVC\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4ee5\u4e0b\u306e3\u3064\u306e\u5f79\u5272\u306b\u5206\u96e2\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n
graph TD\n B[\u30d6\u30e9\u30a6\u30b6] --> C[Controller]\n C --> M[Model]\n C --> V[View]\n M --> DB[(Database)]\n V --> B\n\n style B fill:#f9f,stroke:#333,stroke-width:2px\n style C fill:#bbf,stroke:#333,stroke-width:2px\n style M fill:#bfb,stroke:#333,stroke-width:2px\n style V fill:#fbb,stroke:#333,stroke-width:2px\n style DB fill:#ddd,stroke:#333,stroke-width:2px<\/pre>\n\n\n\n1. Model\uff08\u30e2\u30c7\u30eb\uff09<\/h3>\n\n\n\n
\u30c7\u30fc\u30bf\u3068\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3092\u7ba1\u7406\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n
# app\/models\/user.rb\nclass User < ApplicationRecord\n # \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\n validates :email, presence: true, uniqueness: true\n validates :username, presence: true, length: { minimum: 3 }\n\n # \u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\n has_many :posts\n has_many :comments\n\n # \u30ab\u30b9\u30bf\u30e0\u30e1\u30bd\u30c3\u30c9\n def full_name\n \"#{first_name} #{last_name}\"\n end\nend<\/pre>\n\n\n\n2. View\uff08\u30d3\u30e5\u30fc\uff09<\/h3>\n\n\n\n
\u30e6\u30fc\u30b6\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u62c5\u5f53\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n
<!-- app\/views\/users\/show.html.erb -->\n<div class=\"user-profile\">\n <h1><%= @user.full_name %><\/h1>\n\n <h2>\u6295\u7a3f\u4e00\u89a7<\/h2>\n <% @user.posts.each do |post| %>\n <div class=\"post\">\n <h3><%= post.title %><\/h3>\n <p><%= post.content %><\/p>\n <\/div>\n <% end %>\n<\/div><\/pre>\n\n\n\n3. Controller\uff08\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\uff09<\/h3>\n\n\n\n
\u30e2\u30c7\u30eb\u3068\u30d3\u30e5\u30fc\u306e\u6a4b\u6e21\u3057\u3092\u884c\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n
# app\/controllers\/users_controller.rb\nclass UsersController < ApplicationController\n def index\n @users = User.all\n end\n\n def show\n @user = User.find(params[:id])\n end\n\n def create\n @user = User.new(user_params)\n if @user.save\n redirect_to @user, notice: '\u30e6\u30fc\u30b6\u30fc\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f'\n else\n render :new\n end\n end\n\n private\n\n def user_params\n params.require(:user).permit(:email, :username, :first_name, :last_name)\n end\nend<\/pre>\n\n\n\n\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u306e\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n
1. \u30c6\u30fc\u30d6\u30eb\u8a2d\u8a08\u306e\u57fa\u672c<\/h3>\n\n\n\n
\u826f\u3044\u30c6\u30fc\u30d6\u30eb\u8a2d\u8a08\u306e\u539f\u5247\uff1a<\/p>\n\n\n\n
# db\/migrate\/YYYYMMDDHHMMSS_create_users.rb\nclass CreateUsers < ActiveRecord::Migration[7.1]\n def change\n create_table :users do |t|\n t.string :email, null: false\n t.string :username, null: false\n t.string :first_name\n t.string :last_name\n t.boolean :active, default: true\n\n # created_at, updated_at\u3092\u81ea\u52d5\u8ffd\u52a0\n t.timestamps\n end\n\n # \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u8ffd\u52a0\n add_index :users, :email, unique: true\n add_index :users, :username, unique: true\n end\nend<\/pre>\n\n\n\n2. \u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u306e\u7a2e\u985e<\/h3>\n\n\n\n
\u4e3b\u8981\u306a\u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u30d1\u30bf\u30fc\u30f3\uff1a<\/p>\n\n\n
\n
\u95a2\u9023\u306e\u7a2e\u985e<\/th> \u4f7f\u7528\u4f8b<\/th> \u30b3\u30fc\u30c9\u4f8b<\/th><\/tr><\/thead> one-to-many<\/td> \u30e6\u30fc\u30b6\u30fc\u3068\u6295\u7a3f<\/td> has_many :posts<\/code>belongs_to :user<\/code><\/td><\/tr>many-to-many<\/td> \u8a18\u4e8b\u3068\u30bf\u30b0<\/td> has_many :tags, through: :article_tags<\/code><\/td><\/tr>one-to-one<\/td> \u30e6\u30fc\u30b6\u30fc\u3068\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb<\/td> has_one :profile<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n3. \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u6b63\u898f\u5316<\/h3>\n\n\n\n
\u57fa\u672c\u7684\u306a\u6b63\u898f\u5316\u306e\u30eb\u30fc\u30eb\uff1a<\/p>\n\n\n\n
\n
- \u7b2c\u4e00\u6b63\u898f\u5f62\uff081NF\uff09<\/strong><\/li>\n<\/ol>\n\n\n\n
\n
- \u5404\u30ab\u30e9\u30e0\u304c\u5358\u4e00\u306e\u5024\u3092\u6301\u3064<\/li>\n\n\n\n
- \u91cd\u8907\u3059\u308b\u5217\u3084\u884c\u304c\u306a\u3044<\/li>\n<\/ul>\n\n\n\n
\n
- \u7b2c\u4e8c\u6b63\u898f\u5f62\uff082NF\uff09<\/strong><\/li>\n<\/ol>\n\n\n\n
\n
- 1NF\u3092\u6e80\u305f\u3059<\/li>\n\n\n\n
- \u90e8\u5206\u95a2\u6570\u5f93\u5c5e\u3092\u6392\u9664<\/li>\n<\/ul>\n\n\n\n
\n
- \u7b2c\u4e09\u6b63\u898f\u5f62\uff083NF\uff09<\/strong><\/li>\n<\/ol>\n\n\n\n
\n
- 2NF\u3092\u6e80\u305f\u3059<\/li>\n\n\n\n
- \u63a8\u79fb\u95a2\u6570\u5f93\u5c5e\u3092\u6392\u9664<\/li>\n<\/ul>\n\n\n\n
\u5b9f\u88c5\u4f8b\uff1a<\/p>\n\n\n\n
# \u826f\u3044\u4f8b\uff1a\u6b63\u898f\u5316\u3055\u308c\u305f\u30c6\u30fc\u30d6\u30eb\u8a2d\u8a08\nclass CreateOrders < ActiveRecord::Migration[7.1]\n def change\n create_table :orders do |t|\n t.references :user, foreign_key: true\n t.references :shipping_address, foreign_key: true\n t.decimal :total_amount\n t.timestamps\n end\n\n create_table :order_items do |t|\n t.references :order, foreign_key: true\n t.references :product, foreign_key: true\n t.integer :quantity\n t.decimal :unit_price\n t.timestamps\n end\n end\nend<\/pre>\n\n\n\n4. ActiveRecord\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n
\u52b9\u7387\u7684\u306a\u30af\u30a8\u30ea\u306e\u66f8\u304d\u65b9\uff1a<\/p>\n\n\n\n
# \u975e\u52b9\u7387\u7684\u306aN+1\u30af\u30a8\u30ea\u306e\u4f8b\nusers = User.all\nusers.each do |user|\n puts user.posts.count # \u5404\u30e6\u30fc\u30b6\u30fc\u3054\u3068\u306bSQL\u304c\u767a\u884c\u3055\u308c\u308b\nend\n\n# \u52b9\u7387\u7684\u306aEager Loading\u306e\u4f8b\nusers = User.includes(:posts)\nusers.each do |user|\n puts user.posts.size # \u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u4f7f\u7528\nend<\/pre>\n\n\n\n\u3053\u308c\u3089\u306e\u57fa\u672c\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5805\u7262\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044Rails\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u958b\u767a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u3001MVC\u306e\u8cac\u52d9\u5206\u96e2\u3068\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u306e\u57fa\u672c\u539f\u5247\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u54c1\u8cea\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n\n\n\n
\u5b9f\u8df5\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u624b\u9806<\/h1>\n\n\n\n
\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u5b66\u3076CRUD\u64cd\u4f5c<\/h2>\n\n\n\n
\u30d6\u30ed\u30b0\u30b7\u30b9\u30c6\u30e0\u3092\u4f8b\u306b\u3001\u57fa\u672c\u7684\u306aCRUD\u64cd\u4f5c\u306e\u5b9f\u88c5\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
1. \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7<\/h3>\n\n\n\n
# \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210\nrails new blog_app\ncd blog_app\n\n# \u8a18\u4e8b\u7528\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u751f\u6210\nrails generate model Article title:string content:text\nrails generate controller Articles index show new edit create update destroy<\/pre>\n\n\n\n2. \u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u8a2d\u5b9a<\/h3>\n\n\n\n
# config\/routes.rb\nRails.application.routes.draw do\n root 'articles#index'\n resources :articles\nend<\/pre>\n\n\n\n3. \u30e2\u30c7\u30eb\u306e\u5b9f\u88c5<\/h3>\n\n\n\n
# app\/models\/article.rb\nclass Article < ApplicationRecord\n validates :title, presence: true, length: { minimum: 5, maximum: 100 }\n validates :content, presence: true, length: { minimum: 10 }\n\n # \u691c\u7d22\u6a5f\u80fd\u306e\u8ffd\u52a0\n scope :recent, -> { order(created_at: :desc) }\n scope :published, -> { where(published: true) }\n\n def self.search(query)\n where(\"title LIKE ? OR content LIKE ?\", \"%#{query}%\", \"%#{query}%\")\n end\nend<\/pre>\n\n\n\n4. \u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u306e\u5b9f\u88c5<\/h3>\n\n\n\n
# app\/controllers\/articles_controller.rb\nclass ArticlesController < ApplicationController\n before_action :set_article, only: [:show, :edit, :update, :destroy]\n\n def index\n @articles = Article.recent\n @articles = @articles.search(params[:query]) if params[:query].present?\n end\n\n def show\n end\n\n def new\n @article = Article.new\n end\n\n def create\n @article = Article.new(article_params)\n\n if @article.save\n redirect_to @article, notice: '\u8a18\u4e8b\u304c\u6b63\u5e38\u306b\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002'\n else\n render :new\n end\n end\n\n def edit\n end\n\n def update\n if @article.update(article_params)\n redirect_to @article, notice: '\u8a18\u4e8b\u304c\u6b63\u5e38\u306b\u66f4\u65b0\u3055\u308c\u307e\u3057\u305f\u3002'\n else\n render :edit\n end\n end\n\n def destroy\n @article.destroy\n redirect_to articles_path, notice: '\u8a18\u4e8b\u304c\u6b63\u5e38\u306b\u524a\u9664\u3055\u308c\u307e\u3057\u305f\u3002'\n end\n\n private\n\n def set_article\n @article = Article.find(params[:id])\n rescue ActiveRecord::RecordNotFound\n redirect_to articles_path, alert: '\u8a18\u4e8b\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002'\n end\n\n def article_params\n params.require(:article).permit(:title, :content, :published)\n end\nend<\/pre>\n\n\n\n5. \u30d3\u30e5\u30fc\u306e\u5b9f\u88c5<\/h3>\n\n\n\n
<!-- app\/views\/articles\/index.html.erb -->\n<h1>\u8a18\u4e8b\u4e00\u89a7<\/h1>\n\n<%= form_with url: articles_path, method: :get, local: true do |f| %>\n <%= f.text_field :query, placeholder: \"\u8a18\u4e8b\u3092\u691c\u7d22...\" %>\n <%= f.submit \"\u691c\u7d22\" %>\n<% end %>\n\n<div class=\"articles\">\n <% @articles.each do |article| %>\n <div class=\"article-card\">\n <h2><%= link_to article.title, article_path(article) %><\/h2>\n <p><%= truncate(article.content, length: 100) %><\/p>\n <div class=\"actions\">\n <%= link_to '\u7de8\u96c6', edit_article_path(article) %>\n <%= link_to '\u524a\u9664', article_path(article), \n method: :delete, \n data: { confirm: '\u672c\u5f53\u306b\u524a\u9664\u3057\u307e\u3059\u304b\uff1f' } %>\n <\/div>\n <\/div>\n <% end %>\n<\/div><\/pre>\n\n\n\n\u8a8d\u8a3c\u30fb\u8a8d\u53ef\u6a5f\u80fd\u306e\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n
1. Devise\u3092\u4f7f\u7528\u3057\u305f\u8a8d\u8a3c\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u7bc9<\/h3>\n\n\n\n
# Gemfile\u306b\u8ffd\u52a0\nbundle add devise\n\n# Devise\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\nrails generate devise:install\nrails generate devise User\nrails db:migrate<\/pre>\n\n\n\n2. \u8a8d\u53ef\u30b7\u30b9\u30c6\u30e0\u306e\u5b9f\u88c5\uff08Pundit\uff09<\/h3>\n\n\n\n
# Gemfile\u306b\u8ffd\u52a0\nbundle add pundit\n\n# \u8a8d\u53ef\u30dd\u30ea\u30b7\u30fc\u306e\u751f\u6210\nrails generate pundit:install\nrails generate pundit:policy Article<\/pre>\n\n\n\n3. \u30dd\u30ea\u30b7\u30fc\u306e\u5b9f\u88c5<\/h3>\n\n\n\n
# app\/policies\/article_policy.rb\nclass ArticlePolicy < ApplicationPolicy\n def index?\n true\n end\n\n def show?\n true\n end\n\n def create?\n user.present?\n end\n\n def update?\n return false unless user.present?\n user.admin? || record.user == user\n end\n\n def destroy?\n return false unless user.present?\n user.admin? || record.user == user\n end\nend<\/pre>\n\n\n\n4. \u30bb\u30ad\u30e5\u30a2\u306a\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n
# app\/controllers\/application_controller.rb\nclass ApplicationController < ActionController::Base\n include Pundit::Authorization\n\n # CSRF\u5bfe\u7b56\n protect_from_forgery with: :exception\n\n # \u8a8d\u8a3c\u304c\u5fc5\u8981\u306a\u30a2\u30af\u30b7\u30e7\u30f3\u306e\u8a2d\u5b9a\n before_action :authenticate_user!\n\n # \u8a8d\u53ef\u30a8\u30e9\u30fc\u306e\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\n rescue_from Pundit::NotAuthorizedError, with: :user_not_authorized\n\n private\n\n def user_not_authorized\n flash[:alert] = \"\u3053\u306e\u64cd\u4f5c\u3092\u5b9f\u884c\u3059\u308b\u6a29\u9650\u304c\u3042\u308a\u307e\u305b\u3093\u3002\"\n redirect_to(request.referrer || root_path)\n end\nend<\/pre>\n\n\n\n5. \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306e\u5b9f\u88c5<\/h3>\n\n\n\n
# config\/initializers\/secure_headers.rb\nSecureHeaders::Configuration.default do |config|\n config.x_frame_options = \"DENY\"\n config.x_content_type_options = \"nosniff\"\n config.x_xss_protection = \"1; mode=block\"\n config.x_download_options = \"noopen\"\n config.x_permitted_cross_domain_policies = \"none\"\n config.referrer_policy = %w(origin-when-cross-origin strict-origin-when-cross-origin)\n\n # Content Security Policy\n config.csp = {\n default_src: %w('self'),\n script_src: %w('self' 'unsafe-inline' 'unsafe-eval'),\n style_src: %w('self' 'unsafe-inline'),\n img_src: %w('self' data:),\n connect_src: %w('self'),\n font_src: %w('self'),\n object_src: %w('none'),\n frame_src: %w('none'),\n frame_ancestors: %w('none'),\n form_action: %w('self'),\n base_uri: %w('self'),\n require_sri_for: %w(script style)\n }\nend<\/pre>\n\n\n\n\u3053\u308c\u3089\u306e\u5b9f\u88c5\u306b\u3088\u308a\u3001\u30bb\u30ad\u30e5\u30a2\u3067\u6a5f\u80fd\u7684\u306aRails\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u57fa\u76e4\u304c\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u8a8d\u8a3c\u30fb\u8a8d\u53ef\u306e\u5b9f\u88c5\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u3068\u3063\u3066\u91cd\u8981\u306a\u8981\u7d20\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u73fe\u5834\u3067\u4f7f\u3048\u308b\u958b\u767a\u30c6\u30af\u30cb\u30c3\u30af<\/h1>\n\n\n\n
\u30c1\u30fc\u30e0\u958b\u767a\u3067\u5fc5\u9808\u306eGit\u64cd\u4f5c<\/h2>\n\n\n\n
1. \u57fa\u672c\u7684\u306aGit\u30ef\u30fc\u30af\u30d5\u30ed\u30fc<\/h3>\n\n\n\n
# \u30d6\u30e9\u30f3\u30c1\u306e\u4f5c\u6210\u3068\u5207\u308a\u66ff\u3048\ngit checkout -b feature\/add-user-authentication\n\n# \u5909\u66f4\u306e\u78ba\u8a8d\ngit status\ngit diff\n\n# \u5909\u66f4\u306e\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u3068\u30b3\u30df\u30c3\u30c8\ngit add .\ngit commit -m \"Add user authentication feature\"\n\n# \u30ea\u30e2\u30fc\u30c8\u3078\u306e\u30d7\u30c3\u30b7\u30e5\ngit push origin feature\/add-user-authentication<\/pre>\n\n\n\n2. Git-flow\u306e\u6d3b\u7528<\/h3>\n\n\n\n
\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d6\u30e9\u30f3\u30c1\u6226\u7565\uff1a<\/p>\n\n\n
\n
\u30d6\u30e9\u30f3\u30c1\u7a2e\u5225<\/th> \u7528\u9014<\/th> \u547d\u540d\u898f\u5247<\/th><\/tr><\/thead> main<\/td> \u672c\u756a\u74b0\u5883\u7528<\/td> main<\/td><\/tr> develop<\/td> \u958b\u767a\u7528<\/td> develop<\/td><\/tr> feature<\/td> \u6a5f\u80fd\u958b\u767a\u7528<\/td> feature\/\u6a5f\u80fd\u540d<\/td><\/tr> release<\/td> \u30ea\u30ea\u30fc\u30b9\u6e96\u5099\u7528<\/td> release\/\u30d0\u30fc\u30b8\u30e7\u30f3<\/td><\/tr> hotfix<\/td> \u7dca\u6025\u30d0\u30b0\u4fee\u6b63\u7528<\/td> hotfix\/\u554f\u984c\u540d<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n 3. \u30b3\u30f3\u30d5\u30ea\u30af\u30c8\u89e3\u6c7a\u624b\u9806<\/h3>\n\n\n\n
# \u6700\u65b0\u306e\u5909\u66f4\u3092\u53d6\u5f97\ngit fetch origin\ngit pull origin develop\n\n# \u30b3\u30f3\u30d5\u30ea\u30af\u30c8\u767a\u751f\u6642\ngit status # \u30b3\u30f3\u30d5\u30ea\u30af\u30c8\u30d5\u30a1\u30a4\u30eb\u306e\u78ba\u8a8d\n# \u30d5\u30a1\u30a4\u30eb\u3092\u7de8\u96c6\u3057\u3066\u30b3\u30f3\u30d5\u30ea\u30af\u30c8\u3092\u89e3\u6c7a\ngit add .\ngit commit -m \"Resolve conflicts in user model\"<\/pre>\n\n\n\n4. \u30d7\u30eb\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n
## \u5909\u66f4\u5185\u5bb9\n- \u30e6\u30fc\u30b6\u30fc\u8a8d\u8a3c\u6a5f\u80fd\u306e\u8ffd\u52a0\n- \u30bb\u30c3\u30b7\u30e7\u30f3\u7ba1\u7406\u306e\u5b9f\u88c5\n- \u30d1\u30b9\u30ef\u30fc\u30c9\u30ea\u30bb\u30c3\u30c8\u6a5f\u80fd\u306e\u8ffd\u52a0\n\n## \u30c6\u30b9\u30c8\u5185\u5bb9\n- \u30e6\u30fc\u30b6\u30fc\u767b\u9332\u30c6\u30b9\u30c8\u306e\u5b9f\u884c\n- \u30ed\u30b0\u30a4\u30f3\/\u30ed\u30b0\u30a2\u30a6\u30c8\u306e\u30c6\u30b9\u30c8\n- \u30d1\u30b9\u30ef\u30fc\u30c9\u30ea\u30bb\u30c3\u30c8\u30d5\u30ed\u30fc\u306e\u78ba\u8a8d\n\n## \u30ec\u30d3\u30e5\u30fc\u9805\u76ee\n- [ ] \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30c1\u30a7\u30c3\u30af\n- [ ] \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff\n- [ ] \u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u898f\u7d04\u306e\u9075\u5b88<\/pre>\n\n\n\n\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u65b9\u6cd5<\/h2>\n\n\n\n
1. Rails\u74b0\u5883\u3067\u306e\u30c7\u30d0\u30c3\u30b0\u6280\u6cd5<\/h3>\n\n\n\n
# debugger\u306e\u4f7f\u7528\ndef show\n @user = User.find(params[:id])\n debugger # \u3053\u3053\u3067\u30b3\u30fc\u30c9\u304c\u4e00\u6642\u505c\u6b62\n @posts = @user.posts\nend\n\n# logger.debug\u306e\u6d3b\u7528\ndef create\n logger.debug \"\u30d1\u30e9\u30e1\u30fc\u30bf: #{params.inspect}\"\n @user = User.new(user_params)\n if @user.save\n logger.info \"\u30e6\u30fc\u30b6\u30fc\u4f5c\u6210\u6210\u529f: #{@user.id}\"\n else\n logger.error \"\u30e6\u30fc\u30b6\u30fc\u4f5c\u6210\u5931\u6557: #{@user.errors.full_messages}\"\n end\nend<\/pre>\n\n\n\n2. \u52b9\u7387\u7684\u306a\u30c7\u30d0\u30c3\u30b0\u30c4\u30fc\u30eb<\/h3>\n\n\n\n
# better_errors\u3068binding_of_caller\u306e\u8a2d\u5b9a\ngroup :development do\n gem 'better_errors'\n gem 'binding_of_caller'\nend\n\n# pry-rails\u306e\u6d3b\u7528\n# Gemfile\ngroup :development, :test do\n gem 'pry-rails'\n gem 'pry-byebug'\nend\n\n# \u30b3\u30fc\u30c9\u5185\u3067\u306e\u4f7f\u7528\ndef complex_method\n binding.pry # \u3053\u3053\u3067\u5bfe\u8a71\u7684\u30c7\u30d0\u30c3\u30b0\u30bb\u30c3\u30b7\u30e7\u30f3\u304c\u958b\u59cb\n result = calculate_something\n process_result(result)\nend<\/pre>\n\n\n\n3. \u4e00\u822c\u7684\u306a\u30a8\u30e9\u30fc\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5<\/h3>\n\n\n
\n
\u30a8\u30e9\u30fc\u7a2e\u5225<\/th> \u8003\u3048\u3089\u308c\u308b\u539f\u56e0<\/th> \u89e3\u6c7a\u30a2\u30d7\u30ed\u30fc\u30c1<\/th><\/tr><\/thead> NoMethodError<\/td> nil\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u51e6\u7406<\/td> \u4e8b\u524d\u306e\u5b58\u5728\u30c1\u30a7\u30c3\u30af\u3001present?\u306e\u4f7f\u7528<\/td><\/tr> ActiveRecord::RecordNotFound<\/td> \u5b58\u5728\u3057\u306a\u3044\u30ec\u30b3\u30fc\u30c9\u306e\u53c2\u7167<\/td> find_by\u306e\u4f7f\u7528\u3001\u4f8b\u5916\u51e6\u7406\u306e\u5b9f\u88c5<\/td><\/tr> RoutingError<\/td> \u672a\u5b9a\u7fa9\u306e\u30eb\u30fc\u30c8<\/td> \u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u8a2d\u5b9a\u306e\u78ba\u8a8d\u3001rake routes<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n 4. \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n
# N+1\u30af\u30a8\u30ea\u306e\u691c\u51fa\u3068\u6539\u5584\n# config\/environments\/development.rb\nconfig.after_initialize do\n Bullet.enable = true\n Bullet.alert = true\n Bullet.rails_logger = true\nend\n\n# \u30af\u30a8\u30ea\u306e\u6700\u9069\u5316\nclass PostsController < ApplicationController\n def index\n # \u6539\u5584\u524d\n @posts = Post.all\n\n # \u6539\u5584\u5f8c\n @posts = Post.includes(:user, :comments)\n .references(:user, :comments)\n .where(published: true)\n end\nend<\/pre>\n\n\n\n5. \u30c6\u30b9\u30c8\u306b\u3088\u308b\u30c7\u30d0\u30c3\u30b0<\/h3>\n\n\n\n
# spec\/models\/user_spec.rb\nRSpec.describe User, type: :model do\n describe 'validations' do\n it 'requires email to be unique' do\n existing_user = create(:user)\n new_user = build(:user, email: existing_user.email)\n\n expect(new_user).not_to be_valid\n expect(new_user.errors[:email]).to include('has already been taken')\n end\n end\nend<\/pre>\n\n\n\n\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u306a\u30c1\u30fc\u30e0\u958b\u767a\u3068\u30b9\u30e0\u30fc\u30ba\u306a\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u7279\u306b\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3068\u30c7\u30d0\u30c3\u30b0\u30b9\u30ad\u30eb\u306f\u3001\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u306a\u958b\u767a\u8005\u3068\u3057\u3066\u5fc5\u9808\u306e\u80fd\u529b\u3067\u3059\u3002<\/p>\n\n\n\n
Ruby on Rails\u30ad\u30e3\u30ea\u30a2\u306e\u6b21\u306e\u30b9\u30c6\u30c3\u30d7<\/h1>\n\n\n\n
\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u306e\u4f5c\u308a\u65b9\u3068\u52b9\u679c\u7684\u306a\u30a2\u30d4\u30fc\u30eb\u65b9\u6cd5<\/h2>\n\n\n\n
1. \u9b45\u529b\u7684\u306a\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u306e\u69cb\u7bc9<\/h3>\n\n\n\n
\u52b9\u679c\u7684\u306a\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u306b\u306f\u4ee5\u4e0b\u306e\u8981\u7d20\u3092\u542b\u3081\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n
portfolio_elements = {\n technical_skills: {\n core: ['Ruby on Rails', 'PostgreSQL', 'RSpec'],\n frontend: ['HTML', 'CSS', 'JavaScript'],\n infrastructure: ['AWS', 'Docker', 'CI\/CD'],\n tools: ['Git', 'GitHub', 'Jira']\n },\n\n projects: [\n {\n name: 'EC\u30b5\u30a4\u30c8',\n description: '\u5546\u54c1\u7ba1\u7406\u3001\u6c7a\u6e08\u6a5f\u80fd\u3001\u5728\u5eab\u7ba1\u7406\u3092\u5b9f\u88c5',\n technologies: ['Rails 7.0', 'Hotwire', 'Stripe'],\n highlights: ['\u6708\u9593PV 10,000\u9054\u6210', '\u30b3\u30fc\u30c9\u54c1\u8cea95%\u7dad\u6301']\n },\n {\n name: '\u30bf\u30b9\u30af\u7ba1\u7406\u30a2\u30d7\u30ea',\n description: '\u30c1\u30fc\u30e0\u958b\u767a\u5411\u3051\u306e\u30ab\u30f3\u30d0\u30f3\u30dc\u30fc\u30c9',\n technologies: ['Rails 7.0', 'React', 'GraphQL'],\n highlights: ['\u30c1\u30fc\u30e0\u958b\u767a\u7d4c\u9a13', 'API\u30c7\u30b6\u30a4\u30f3']\n }\n ]\n}<\/pre>\n\n\n\n2. GitHub\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u306e\u6700\u9069\u5316<\/h3>\n\n\n\n
# GitHub Profile README.md\n## \ud83d\udc4b About Me\nRails\u958b\u767a\u8005\u3068\u3057\u30663\u5e74\u306e\u7d4c\u9a13\u3092\u6301\u3064\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3059\u3002\n\u30c1\u30fc\u30e0\u958b\u767a\u3068\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u3078\u306e\u8ca2\u732e\u306b\u60c5\u71b1\u3092\u6301\u3063\u3066\u53d6\u308a\u7d44\u3093\u3067\u3044\u307e\u3059\u3002\n\n## \ud83d\udee0 Technical Skills\n- Backend: Ruby on Rails, PostgreSQL, Redis\n- Frontend: HTML, CSS, JavaScript, React\n- Testing: RSpec, Capybara, Jest\n- DevOps: Docker, AWS, CircleCI\n\n## \ud83c\udf1f Featured Projects\n1. EC\u30b5\u30a4\u30c8\u958b\u767a\n2. \u30bf\u30b9\u30af\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\n3. API\u958b\u767a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\n\n## \ud83d\udcc8 GitHub Stats\n<\/pre>\n\n\n\n\u6280\u8853\u529b\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u6d3b\u7528\u8853<\/h2>\n\n\n\n
1. \u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3078\u306e\u8ca2\u732e<\/h3>\n\n\n\n
contribution_strategy = {\n beginner_friendly: [\n 'first-timers-only',\n 'good-first-issue',\n 'help-wanted'\n ],\n\n contribution_steps: [\n '\u65e2\u5b58\u306e\u30a4\u30b7\u30e5\u30fc\u3092\u78ba\u8a8d',\n '\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u306e\u7406\u89e3',\n '\u30ed\u30fc\u30ab\u30eb\u3067\u306e\u958b\u767a\u74b0\u5883\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7',\n '\u30d7\u30eb\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u4f5c\u6210',\n '\u30ec\u30d3\u30e5\u30fc\u3078\u306e\u5bfe\u5fdc'\n ]\n}<\/pre>\n\n\n\n2. \u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u53c2\u52a0\u306e\u5177\u4f53\u7684\u306a\u65b9\u6cd5<\/h3>\n\n\n
\n
\u6d3b\u52d5\u30bf\u30a4\u30d7<\/th> \u53c2\u52a0\u65b9\u6cd5<\/th> \u671f\u5f85\u3067\u304d\u308b\u52b9\u679c<\/th><\/tr><\/thead> \u52c9\u5f37\u4f1a<\/td> connpass, Doorkeeper<\/td> \u6700\u65b0\u6280\u8853\u306e\u7fd2\u5f97\u3001\u4eba\u8108\u5f62\u6210<\/td><\/tr> \u30ab\u30f3\u30d5\u30a1\u30ec\u30f3\u30b9<\/td> RubyKaigi, RailsConf<\/td> \u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u8996\u70b9\u3001\u30c8\u30ec\u30f3\u30c9\u628a\u63e1<\/td><\/tr> \u30aa\u30f3\u30e9\u30a4\u30f3\u30b3\u30df\u30e5\u30cb\u30c6\u30a3<\/td> Slack, Discord<\/td> \u65e5\u5e38\u7684\u306a\u60c5\u5831\u4ea4\u63db\u3001\u8cea\u554f\u89e3\u6c7a<\/td><\/tr> \u6280\u8853\u30d6\u30ed\u30b0<\/td> Qiita, Zenn<\/td> \u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u306e\u7fd2\u6163\u5316\u3001\u77e5\u898b\u306e\u5171\u6709<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n 3. \u7d99\u7d9a\u7684\u306a\u5b66\u7fd2\u8a08\u753b<\/h3>\n\n\n\n
learning_roadmap = {\n short_term: [\n '\u30c6\u30b9\u30c8\u99c6\u52d5\u958b\u767a\u306e\u7fd2\u5f97',\n '\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u306e\u5b9f\u8df5',\n '\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306e\u9069\u7528'\n ],\n\n mid_term: [\n '\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u7406\u89e3',\n 'AWS\u8a8d\u5b9a\u8cc7\u683c\u306e\u53d6\u5f97',\n '\u30c1\u30fc\u30e0\u30ea\u30fc\u30c0\u30fc\u30b7\u30c3\u30d7\u30b9\u30ad\u30eb\u306e\u5411\u4e0a'\n ],\n\n long_term: [\n '\u30b7\u30b9\u30c6\u30e0\u30a2\u30fc\u30ad\u30c6\u30af\u30c8\u9818\u57df\u306e\u5c02\u9580\u6027\u78ba\u7acb',\n '\u30c6\u30c3\u30af\u30ea\u30fc\u30c9\u8077\u3078\u306e\u6210\u9577',\n '\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u904b\u55b6\u3078\u306e\u53c2\u753b'\n ]\n}<\/pre>\n\n\n\n