{"id":1211,"date":"2021-09-30T12:25:05","date_gmt":"2021-09-30T03:25:05","guid":{"rendered":"https:\/\/weseek.co.jp\/tech\/?p=1211"},"modified":"2023-04-17T11:31:15","modified_gmt":"2023-04-17T02:31:15","slug":"%e3%80%90rails%e3%80%91cancancan-%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e8%a7%a3%e8%aa%ac","status":"publish","type":"post","link":"https:\/\/weseek.co.jp\/tech\/1211\/","title":{"rendered":"Rails|CanCanCan\u306e\u4f7f\u3044\u65b9\u89e3\u8aac"},"content":{"rendered":"<p>\u3053\u306e\u6295\u7a3f\u306f\u3001\u5f0a\u793e\u304c\u63d0\u4f9b\u3059\u308b<b>WESEEK TECH\u901a\u4fe1<\/b>\u306e\u4e00\u74b0\u3067\u3059\u3002<br \/>\nWESEEK TECH\u901a\u4fe1\u3068\u306f\u3001WESEEK\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u30ad\u30e3\u30c3\u30c1\u30a2\u30c3\u30d7\u3057\u305f\u6280\u8853\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u3001tech\u30d6\u30ed\u30b0\u3092\u901a\u3058\u3066\u5b9a\u671f\u7684\u306b\u767a\u4fe1\u3057\u3066\u3044\u304f\u3082\u306e\u3067\u3059\u3002<\/p>\n\n<h2>\u306f\u3058\u3081\u306b<\/h2>\n<p>\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u306f Rails \u306e\u6a29\u9650\u7ba1\u7406 gem \u3067\u3042\u308b CanCanCan \u306b\u3064\u3044\u3066\u3001\u5c0e\u5165\u624b\u9806\u3068\u6a5f\u80fd\u306e\u89e3\u8aac\u3092\u884c\u3044\u307e\u3059\u3002\u5c0e\u5165\u624b\u9806\u3092\u98db\u3070\u3057\u3066\u6a5f\u80fd\u306e\u89e3\u8aac\u3092\u8aad\u307f\u305f\u3044\u65b9\u306f<a href=\"https:\/\/weseek.co.jp\/tech\/1211\/#_CanCanCan\">\u3053\u3061\u3089<\/a>\u3092\u62bc\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><!--more--><\/p>\n<h2>CanCanCan \u3068\u306f<\/h2>\n<p>CanCanCan \u3068\u306f\u3001Ruby on Rails \u306e\u6a29\u9650\u7ba1\u7406 gem \u3067\u3042\u308a\u3001\u7279\u5b9a\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u30ea\u30bd\u30fc\u30b9\u3092\u5236\u9650\u3057\u307e\u3059\u3002<\/p>\n<p>\u3069\u3046\u3044\u3046\u3053\u3068\u304b\u3068\u8a00\u3046\u3068\u3001\u4f8b\u3048\u3070 admin, manager, read_only \u3068\u3044\u30463\u3064\u306e\u6a29\u9650\u304c\u3042\u3063\u305f\u3068\u3057\u3066\u3001\u305d\u308c\u305e\u308c\u306f\u4ee5\u4e0b\u306e\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>admin \u3068\u3044\u3046\u6a29\u9650\u3092\u6301\u3063\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u7ba1\u7406\u8005\u7528\u306e\u753b\u9762\u542b\u3081\u5168\u3066\u306e\u753b\u9762\u3092\u95b2\u89a7\u53ef\u80fd\u3067\u3001\u30da\u30fc\u30b8\u4e0a\u3067\u5168\u3066\u306e\u30e2\u30c7\u30eb\u306e\u64cd\u4f5c\u304c\u53ef\u80fd<\/li>\n<li>manager \u3068\u3044\u3046\u6a29\u9650\u3092\u6301\u3064\u30e6\u30fc\u30b6\u30fc\u306f\u7ba1\u7406\u8005\u7528\u306e\u753b\u9762\u3092\u95b2\u89a7\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u304c\u3001\u305d\u308c\u4ee5\u5916\u306e\u30da\u30fc\u30b8\u3067\u30e2\u30c7\u30eb\u306e\u64cd\u4f5c\u304c\u53ef\u80fd<\/li>\n<li>read_only \u3068\u3044\u3046\u6a29\u9650\u3092\u6301\u3064\u30e6\u30fc\u30b6\u30fc\u306f\u30e2\u30c7\u30eb\u306e\u64cd\u4f5c\u304c\u3067\u304d\u305a\u95b2\u89a7\u306e\u307f\u53ef\u80fd<\/li>\n<\/ul>\n<p>CanCanCan \u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3053\u3093\u306a\u611f\u3058\u306e\u6a5f\u80fd\u3092\u7c21\u5358\u306b\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>CanCanCan \u3092\u4f7f\u3046\u305f\u3081\u306e\u6e96\u5099<\/h2>\n<p>CanCanCan \u306f\u3053\u306e gem \u5358\u4f53\u3067\u7528\u3044\u308b\u3053\u3068\u306f\u307b\u3068\u3093\u3069\u306a\u304f\u3001\u591a\u304f\u306e\u5834\u5408\u306f devise \u3068\u3044\u3046\u30ed\u30b0\u30a4\u30f3\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b gem \u3068\u30bb\u30c3\u30c8\u3067\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p>devise \u306b\u3088\u308a\u8ffd\u52a0\u3055\u308c\u305f User \u30e2\u30c7\u30eb\u306b\u4eca\u56de\u65b0\u3057\u304f\u8ffd\u52a0\u3059\u308b Role \u30e2\u30c7\u30eb\u3092\u7d10\u3065\u3051\u3066\u3001\u305d\u308c\u3092 CanCanCan \u3067\u8ffd\u52a0\u3059\u308b Ability \u30af\u30e9\u30b9\u3067\u7ba1\u7406\u3057\u3066\u4f7f\u3044\u307e\u3059\u3002<br \/>\n\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001devise \u306b\u3088\u3063\u3066\u3059\u3067\u306b User \u30e2\u30c7\u30eb\u304c\u5b58\u5728\u3059\u308b\u3068\u3044\u3046\u524d\u63d0\u3067\u89e3\u8aac\u3092\u3057\u307e\u3059\u3002<\/p>\n<p>devise \u306b\u95a2\u3057\u3066\u306f\u4eca\u5ea6\u6a5f\u4f1a\u304c\u3042\u308c\u3070\u89e3\u8aac\u306e\u8a18\u4e8b\u3092\u66f8\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h3>\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h3>\n<p>\u3067\u306f\u307e\u305a\u3001CanCanCan \u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3092\u884c\u3044\u307e\u3059\u3002<br \/>\nGemfile \u306b\u4ee5\u4e0b\u306e\u8a18\u8ff0\u3092\u8ffd\u52a0\u3057\u3001bundle install \u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-bash\">gem &#039;cancancan&#039;<\/code><\/pre>\n<pre><code class=\"language-bash\">$ bundle install<\/code><\/pre>\n<p>Gemfile.lock \u3092\u78ba\u8a8d\u3057\u3001CanCanCan \u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-bash\">cancancan (3.3.0)<\/code><\/pre>\n<h3>Role \u30e2\u30c7\u30eb\u306e\u4f5c\u6210<\/h3>\n<p>\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u4ed8\u4e0e\u3059\u308b\u6a29\u9650\u3092\u7ba1\u7406\u3059\u308b Role \u3092\u4f5c\u6210\u3057\u3066\u3044\u304f\u306e\u3067\u3059\u304c\u3001\u4eca\u56de\u306f1\u3064\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u8907\u6570\u306e\u6a29\u9650\u3092\u4ed8\u4e0e\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u306a\u306e\u3067 Role \u30e2\u30c7\u30eb\u3068\u3001User - Role \u9593\u306e\u591a\u5bfe\u591a\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b UserRole \u30e2\u30c7\u30eb\u306e2\u3064\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-bash\">$ rails generate migration CreateRoles\n      invoke  active_record\n      create    db\/migrate\/20210904000000_create_roles.rb<\/code><\/pre>\n<p>\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u30d5\u30a1\u30a4\u30eb\u304c\u4f5c\u6210\u3055\u308c\u305f\u306e\u3067\u3001\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u4ee5\u4e0b\u306e\u8a18\u8ff0\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<br \/>\n\u30ab\u30e9\u30e0\u306f\u6a29\u9650\u540d\u3092\u7ba1\u7406\u3059\u308b name \u3092\u5fc5\u9808\u30ab\u30e9\u30e0\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">class CreateRoles &lt; ActiveRecord::Migration[6.0]\n  def change\n    create_table :roles do |t|\n      t.string :name, null: false\n      t.timestamps\n    end\n  end\nend<\/code><\/pre>\n<p>\u6b21\u306b UserRole \u30e2\u30c7\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-bash\">$ rails generate migration CreateUsersRoles\n      invoke  active_record\n      create    db\/migrate\/20210904000000_create_user_roles.rb<\/code><\/pre>\n<p>UserRole \u30e2\u30c7\u30eb\u306b\u306f\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u306e\u5f79\u5272\u3092\u6301\u305f\u305b\u308b\u305f\u3081\u3001references \u578b\u3092\u7528\u3044\u3066\u5916\u90e8\u30ad\u30fc\u5236\u7d04\u3092\u4ed8\u3051\u307e\u3059\u3002<br \/>\n\u3055\u3089\u306b user \u3068 role \u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u91cd\u8907\u3057\u306a\u3044\u3088\u3046\u306b unique \u5236\u7d04\u3082\u4ed8\u3051\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">class CreateUserRoles &lt; ActiveRecord::Migration[6.0]\n  def change\n    create_table :user_roles do |t|\n      t.references :user, foreign_key: true, null: false\n      t.references :role, foreign_key: true, null: false\n      t.timestamps\n\n      t.index [:user_id, :role_id], unique: true\n    end\n  end\nend<\/code><\/pre>\n<p>\u3053\u308c\u304c\u7d42\u308f\u3063\u305f\u3089 migrate \u3092\u5b9f\u884c\u3055\u305b\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u53cd\u6620\u3055\u305b\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-bash\">$ rails db:migrate\n== 20210904000000 CreateRoles: migrating ======================================\n-- create_table(:roles)\n   -&gt; 0.0144s\n== 20210904000000 CreateRoles: migrated (0.0146s) =============================\n\n== 20210904000000 CreateUserRoles: migrating ==================================\n-- create_table(:user_roles)\n   -&gt; 0.0362s\n== 20210904000000 CreateUserRoles: migrated (0.0363s) =========================<\/code><\/pre>\n<p>\u305d\u3046\u3057\u305f\u3089\u30e2\u30c7\u30eb\u30d5\u30a1\u30a4\u30eb\u306e\u4f5c\u6210\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<p>app\/models \u914d\u4e0b\u306b role.rb \u3092\u7528\u610f\u3057\u3066\u4ee5\u4e0b\u306e\u8a18\u8ff0\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">class Role &lt; ApplicationRecord\n  has_many :users, through: :user_roles\n  validates :name, presence: true\nend<\/code><\/pre>\n<p>user_role.rb \u3082\u7528\u610f\u3057\u3066\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">class UserRole &lt; ApplicationRecord\n  belongs_to :user\n  belongs_to :role\nend<\/code><\/pre>\n<p>\u65e2\u5b58\u306e user.rb \u306b\u306f\u4ee5\u4e0b\u306e1\u884c\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">has_many :roles, through: :user_roles<\/code><\/pre>\n<p>\u3053\u308c\u306b\u3066 Uesr - Role \u9593\u3067\u591a\u5bfe\u591a\u306e\u95a2\u9023\u4ed8\u3051\u304c\u8a2d\u5b9a\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u4eca\u56de\u306f1\u3064\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u8907\u6570\u306e\u6a29\u9650\u3092\u4ed8\u4e0e\u3059\u308b\u305f\u3081\u306b Role \u3068 UserRole \u30ab\u30e9\u30e0\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u304c\u30011\u3064\u306e\u30e6\u30fc\u30b6\u30fc\u306b1\u3064\u306e\u6a29\u9650\u3057\u304b\u4ed8\u4e0e\u3057\u306a\u3044\u306e\u3067\u3042\u308c\u3070\u3001User \u30e2\u30c7\u30eb\u306b role \u30ab\u30e9\u30e0\u3092\u8ffd\u52a0\u3059\u308b\u3060\u3051\u3067\u554f\u984c\u306a\u3044\u3067\u3059\u3002<\/p>\n<h3>Ability \u30af\u30e9\u30b9\u306e\u4f5c\u6210<\/h3>\n<p>\u6b21\u306b\u6a29\u9650\u3054\u3068\u306e\u30eb\u30fc\u30eb\u3092\u8a2d\u5b9a\u3059\u308b Ability \u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-bash\">$ rails generate cancan:ability\n      create  app\/models\/ability.rb<\/code><\/pre>\n<p>models \u914d\u4e0b\u306b ability.rb \u304c\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h2>\u8a2d\u5b9a\u3092\u884c\u3044 CanCanCan \u3092\u4f7f\u3063\u3066\u307f\u308b<\/h2>\n<p>Role \u30e2\u30c7\u30eb\u306e\u4f5c\u6210\u3068 Ability \u30af\u30e9\u30b9\u306e\u4f5c\u6210\u304c\u7d42\u308f\u308a\u3001\u3088\u3046\u3084\u304f\u4e0b\u6e96\u5099\u304c\u7d42\u308f\u308a\u307e\u3057\u305f\u3002<br \/>\n\u305d\u308c\u3067\u306f\u65e9\u901f CanCanCan \u3092\u4f7f\u304a\u3046\u3068\u601d\u3046\u306e\u3067\u3059\u304c\u3001\u305d\u306e\u524d\u306b\u6a29\u9650\u3092\u4f5c\u6210\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u6a29\u9650\u3092\u4f5c\u6210\u3059\u308b<\/h3>\n<p>\u4eca\u56de\u306f\u5192\u982d\u3067\u8a71\u3057\u305f3\u3064\u306e\u6a29\u9650(admin, manager, read_only)\u3092\u4f5c\u6210\u3057\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>admin \u3068\u3044\u3046\u6a29\u9650\u3092\u6301\u3063\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u7ba1\u7406\u8005\u7528\u306e\u753b\u9762\u542b\u3081\u5168\u3066\u306e\u753b\u9762\u3092\u95b2\u89a7\u53ef\u80fd\u3067\u3001\u30da\u30fc\u30b8\u4e0a\u3067\u5168\u3066\u306e\u30e2\u30c7\u30eb\u306e\u64cd\u4f5c\u304c\u53ef\u80fd<\/li>\n<li>manager \u3068\u3044\u3046\u6a29\u9650\u3092\u6301\u3064\u30e6\u30fc\u30b6\u30fc\u306f\u7ba1\u7406\u8005\u7528\u306e\u753b\u9762\u3092\u95b2\u89a7\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u304c\u3001\u305d\u308c\u4ee5\u5916\u306e\u30da\u30fc\u30b8\u3067\u30e2\u30c7\u30eb\u306e\u64cd\u4f5c\u304c\u53ef\u80fd<\/li>\n<li>read_only \u3068\u3044\u3046\u6a29\u9650\u3092\u6301\u3064\u30e6\u30fc\u30b6\u30fc\u306f\u30e2\u30c7\u30eb\u306e\u64cd\u4f5c\u304c\u3067\u304d\u305a\u95b2\u89a7\u306e\u307f\u53ef\u80fd<\/li>\n<\/ul>\n<p>\u6a29\u9650\u306e\u4f5c\u6210\u81ea\u4f53\u306f\u3068\u3066\u3082\u7c21\u5358\u3067\u3001Role \u30e2\u30c7\u30eb\u306b\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3060\u3051\u3067\u3059\u3002<br \/>\nrails \u30b3\u30f3\u30bd\u30fc\u30eb\u3092\u7528\u3044\u3066\u4f5c\u6210\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-bash\">$ rails console<\/code><\/pre>\n<p>\u30b3\u30f3\u30bd\u30fc\u30eb\u304c\u8d77\u52d5\u3057\u305f\u3089\u3001Role \u30e2\u30c7\u30eb\u306b\u5bfe\u3057\u3066 create \u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-bash\">[1] pry(main)&gt; Role.create(name: &#039;admin&#039;)\n#&lt;Role:0x0000559bddf1b9d0&gt; {\n                 :id =&gt; 1,\n            :name =&gt; &quot;admin&quot;,\n    :created_at =&gt; Sat, 04 Sep 2021 09:26:22 UTC +00:00,\n    :updated_at =&gt; Sat, 04 Sep 2021 09:26:22 UTC +00:00\n}<\/code><\/pre>\n<p>\u7d9a\u3044\u3066 manager, read_only \u3082\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-bash\">[2] pry(main)&gt; Role.create(name: &#039;manager&#039;)\n[3] pry(main)&gt; Role.create(name: &#039;read_only&#039;)<\/code><\/pre>\n<p>\u3053\u308c\u30673\u3064\u306e role \u304c\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h3>\u6a29\u9650\u3054\u3068\u306b\u30eb\u30fc\u30eb\u3092\u8a2d\u5b9a\u3059\u308b<\/h3>\n<p>admin \u3067\u3042\u308c\u3070\u5168\u3066\u306e\u753b\u9762\u3092\u95b2\u89a7\u53ef\u80fd\u3001read_only \u3067\u3042\u308c\u3070 \u95b2\u89a7\u306e\u307f\u53ef\u80fd\u3068\u3044\u3046\u3088\u3046\u306b\u3001\u305d\u308c\u305e\u308c\u306e Role \u306b\u5bfe\u3057\u3066\u8a2d\u5b9a\u3092\u884c\u306a\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u5148\u307b\u3069\u306e <code>rails generate cancan:ability<\/code> \u3067 app\/models \u914d\u4e0b\u306b ablity.rb \u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u304c\u751f\u6210\u3055\u308c\u3066\u3044\u308b\u306f\u305a\u306a\u306e\u3067\u3001\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304d\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">class Ability\n  include CanCan::Ability\n\n  def initialize(user)\n    # Define abilities for the passed in user here. For example:\n    #\n    #   user ||= User.new # guest user (not logged in)\n    #   if user.admin?\n    #     can :manage, :all\n    #   else\n    #     can :read, :all\n    #   end\n    #\n    # The first argument to `can` is the action you are giving the user\n    # permission to do.\n    # If you pass :manage it will apply to every action. Other common actions\n    # here are :read, :create, :update and :destroy.\n    #\n    # The second argument is the resource the user can perform the action on.\n    # If you pass :all it will apply to every resource. Otherwise pass a Ruby\n    # class of the resource.\n    #\n    # The third argument is an optional hash of conditions to further filter the\n    # objects.\n    # For example, here the user can only update published articles.\n    #\n    #   can :update, Article, :published =&gt; true\n    #\n    # See the wiki for details:\n    # https:\/\/github.com\/CanCanCommunity\/cancancan\/wiki\/Defining-Abilities\n  end\nend\n<\/code><\/pre>\n<p>\u304a\u3001\u4f55\u3084\u3089\u6ca2\u5c71\u306e\u30b3\u30e1\u30f3\u30c8\u304c\u66f8\u304b\u308c\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<br \/>\n\u3053\u306e\u30b3\u30e1\u30f3\u30c8\u306b\u8a2d\u5b9a\u65b9\u6cd5\u304c\u8a18\u3055\u308c\u3066\u304a\u308a\u3001\u610f\u8a33\u3059\u308b\u3068\u3053\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-bash\">\u4f8b\u3048\u3070\u3053\u306e\u3088\u3046\u306b\u3057\u3066 ability \u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\n\nuser ||= User.new\nif user.admin?\n  can :manage, :all\nelse\n  can :read, :all\nend\n\ncan \u306e\u7b2c\u4e00\u5f15\u6570\u306b\u306f :read, :create, :update, :destroy \u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\nmanage \u3092\u6e21\u3059\u3068\u3053\u308c\u3089\u306e4\u3064\u5168\u3066\u304c\u6709\u52b9\u306b\u306a\u308a\u307e\u3059\u3002\n\ncan \u306e\u7b2c\u4e8c\u5f15\u6570\u306b\u306f\u3001\u7b2c\u4e00\u5f15\u6570\u3067\u8a2d\u5b9a\u3057\u305f\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3067\u304d\u308b\u30e2\u30c7\u30eb\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\n:all \u3092\u6e21\u3059\u3068\u5168\u3066\u306e\u30e2\u30c7\u30eb\u304c\u5bfe\u8c61\u306b\u306a\u308a\u307e\u3059\u3002\n\ncan \u306e\u7b2c\u4e09\u5f15\u6570\u3067\u306f\u3055\u3089\u306b\u8ffd\u52a0\u306e\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\n\n\u8a73\u3057\u304f\u306f wiki \u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002\nhttps:\/\/github.com\/CanCanCommunity\/cancancan\/wiki\/Defining-Abilities<\/code><\/pre>\n<p>\u57fa\u672c\u7684\u306b\u306f\u7b2c\u4e00\u5f15\u6570\u306b\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5b9a\u7fa9\u3057\u3001\u7b2c\u4e8c\u5f15\u6570\u3067\u305d\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3067\u304d\u308b\u30e2\u30c7\u30eb\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">can :read, :all\ncan :update, Book<\/code><\/pre>\n<p>\u4f8b\u3048\u3070\u3053\u306e\u3088\u3046\u306a\u8a18\u8ff0\u3060\u3068\u3001\u5404\u30e2\u30c7\u30eb\u306e\u4e00\u89a7\u753b\u9762\u3068\u8a73\u7d30\u753b\u9762\u3092\u95b2\u89a7\u3067\u304d\u3001Book \u30e2\u30c7\u30eb\u3060\u3051\u306f\u7de8\u96c6\u753b\u9762\u306e\u95b2\u89a7\u3068\u30e2\u30c7\u30eb\u306e\u66f4\u65b0(update)\u306e\u64cd\u4f5c\u3092\u884c\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u8aac\u660e\u3092\u5143\u306b\u5404\u6a29\u9650\u306b\u5bfe\u3057\u3066\u8a2d\u5b9a\u3092\u884c\u3046\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">class Ability\n  include CanCan::Ability\n\n  def initialize(user)\n    user ||= User.new\n\n    # role \u304c admin \u306e\u30e6\u30fc\u30b6\u30fc\u306f\u30e2\u30c7\u30eb\u306e\u64cd\u4f5c\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u3066\u7ba1\u7406\u8005\u753b\u9762\u3092\u95b2\u89a7\u53ef\u80fd\n    if user.has_role?(:admin)\n      can :manage, :all\n      can :access_admin_page, :all\n\n    # role \u304c manager \u306e\u30e6\u30fc\u30b6\u30fc\u306f\u30e2\u30c7\u30eb\u306e\u64cd\u4f5c\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u304c\u3001\u7ba1\u7406\u8005\u753b\u9762\u306f\u95b2\u89a7\u4e0d\u53ef\u80fd\n    elsif user.has_role?(:manager)\n      can :manage, :all\n      cannot :access_admin_page, :all\n\n    # role \u304c read_only \u306e\u30e6\u30fc\u30b6\u30fc\u306f\u30e2\u30c7\u30eb\u306e\u64cd\u4f5c\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u305a\u95b2\u89a7\u306e\u307f\u53ef\u80fd\u3001\u7ba1\u7406\u8005\u753b\u9762\u306f\u95b2\u89a7\u4e0d\u53ef\u80fd\n    elsif user.has_role?(:read_only)\n      can :read, :all\n      cannot :access_admin_page, :all\n\n    # role \u3092\u6301\u3063\u3066\u3044\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u306f\u5168\u3066\u306e\u753b\u9762\u304c\u95b2\u89a7\u4e0d\u53ef\u80fd\n    else\n      cannot :read, :all\n    end\n  end\nend<\/code><\/pre>\n<p><a href=\"https:\/\/github.com\/CanCanCommunity\/cancancan\/blob\/develop\/docs\/cannot.md\" title=\"cannot\">cannot<\/a> \u306f can \u306e\u53cd\u5bfe\u3067\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3067\u304d\u306a\u304f\u3057\u307e\u3059\u3002<br \/>\n\u4e00\u90e8\u306e\u753b\u9762\u3060\u3051\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5236\u9650\u3055\u305b\u305f\u3044\u5834\u5408\u306b\u3001<code>can :manage, :all<\/code> \u306a\u3069\u306e\u8a18\u8ff0\u3068\u4f75\u7528\u3059\u308b\u3053\u3068\u3067\u697d\u306b\u8a2d\u5b9a\u3092\u884c\u3048\u307e\u3059\u3002<\/p>\n<h3>authorize_resource \u3067\u30a2\u30d3\u30ea\u30c6\u30a3\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/h3>\n<p>ability.rb \u30d5\u30a1\u30a4\u30eb\u306b\u6a29\u9650\u3054\u3068\u306b\u8a2d\u5b9a\u3092\u884c\u3044\u307e\u3057\u305f\u304c\u3001\u3053\u308c\u3060\u3051\u3067\u306f\u8a2d\u5b9a\u3092\u884c\u306a\u3063\u305f\u3060\u3051\u3067\u5b9f\u969b\u306b\u30a2\u30d3\u30ea\u30c6\u30a3\u306e\u30c1\u30a7\u30c3\u30af\u304c\u884c\u308f\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046\u306b\u306f\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u30d5\u30a1\u30a4\u30eb\u306b\u8a2d\u5b9a\u3092\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n\u4ee5\u4e0b\u306e\u4f8b\u3067\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c edit \u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u884c\u3057\u305f\u6642\u306b :update \u306e\u30a2\u30d3\u30ea\u30c6\u30a3\u3092\u6301\u3063\u3066\u3044\u308b\u304b\u30c1\u30a7\u30c3\u30af\u3057\u3001\u6301\u3063\u3066\u3044\u308c\u3070 edit \u753b\u9762\u3092\u8868\u793a\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">class BooksController &lt; ApplicationController\n  def edit\n    @book = Book.find(params[:id])\n    authorize! :update, @book\n  end\nend<\/code><\/pre>\n<p>\u3053\u308c\u3067\u3082\u5168\u7136\u554f\u984c\u306a\u3044\u3067\u3059\u304c\u3001\u5168\u3066\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u306b authorize! \u3092\u8a18\u8ff0\u3057\u3066\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046\u306e\u306f\u5c11\u3057\u9762\u5012\u3067\u3059\u3002<br \/>\n\u305d\u3046\u3044\u3046\u6642\u306f authorize_resource \u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u305d\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u5185\u306e\u5404\u30a2\u30af\u30b7\u30e7\u30f3\u3067\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3048\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">class BooksController &lt; ApplicationController\n  authorize_resource\n\n  def edit\n    @book = Book.find(params[:id])\n  end\nend<\/code><\/pre>\n<p>authorize! \u3084 authorize_resource \u3067\u306e\u30c1\u30a7\u30c3\u30af\u304c\u5b9f\u884c\u3055\u308c\u305f\u6642\u3001\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u5bfe\u5fdc\u3059\u308b\u30a2\u30d3\u30ea\u30c6\u30a3\u3092\u6301\u3063\u3066\u3044\u308c\u3070\u305d\u306e\u307e\u307e\u30e1\u30bd\u30c3\u30c9\u304c\u5b9f\u884c\u3055\u308c\u3001\u6301\u3063\u3066\u3044\u306a\u3051\u308c\u3070 AccessDenied \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<h3>\u7ba1\u7406\u8005\u753b\u9762\u306e\u95b2\u89a7\u3092 URL \u3067\u5224\u5b9a\u3057\u3066\u5236\u9650\u3059\u308b<\/h3>\n<p>\u3055\u3066\u3001\u57fa\u672c\u7684\u306a ability \u306f :read, :create, :update, :destroy, :manage \u306e5\u7a2e\u985e\u306a\u306e\u3067\u3059\u304c\u3001\u5148\u307b\u3069\u306e\u4f8b\u3067\u306f :access_admin_page \u3068\u3044\u3046 ability \u3082\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n\u3053\u308c\u306f\u81ea\u5206\u3067\u4f5c\u6210\u3057\u305f ability \u3067\u3042\u308a\u3001\u7ba1\u7406\u8005\u753b\u9762\u306e\u95b2\u89a7\u304c\u53ef\u80fd\u304b\u3069\u3046\u304b\u3092\u3053\u306e ability \u3067\u5224\u65ad\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<dl>\n<dt>\u4eca\u306e\u307e\u307e\u3060\u3068\u3069\u3046\u3044\u3063\u305f\u753b\u9762\u304c\u7ba1\u7406\u8005\u753b\u9762\u306a\u306e\u304b\u3092\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5074\u304c\u5224\u65ad\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u306e\u3067\u3001\u6b21\u306b\u305d\u308c\u306e\u8a2d\u5b9a\u3092\u884c\u3044\u307e\u3059\u3002<\/dt>\n<dd>\n<p>access_admin_page \u3068\u3044\u3046 ability \u3092\u6301\u3063\u3066\u3044\u308b\u5834\u5408\u306b\u306e\u307f\u7ba1\u7406\u8005\u753b\u9762\u306e\u95b2\u89a7\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<\/dd>\n<\/dl>\n<p>apprication_controller.rb \u306b\u4ee5\u4e0b\u306e\u8a18\u8ff0\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">before_action :check_admin_authorization\n\ndef check_admin_authorization\n  if request.path.start_with?(&#039;\/admin&#039;)\n    authorize! :access_admin_page\n  end\nend<\/code><\/pre>\n<p>\u3053\u306e\u8a18\u8ff0\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<br \/>\n\u4eca\u56de\u306e\u4f8b\u3067\u306f\u3001url \u304c <code>\/admin<\/code> \u3067\u59cb\u307e\u308b\u753b\u9762\u3092\u7ba1\u7406\u8005\u753b\u9762\u3068\u3057\u307e\u3059\u3002<\/p>\n<p>\u539f\u5247\u3068\u3057\u3066\u5168\u3066\u306e Controller \u306f\u3053\u306e ApplicationController \u3092\u7d99\u627f\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u3069\u306e\u753b\u9762\u3092\u958b\u3044\u305f\u3068\u3057\u3066\u3082 before_action \u306b\u3088\u308a check_admin_authorization \u30e1\u30bd\u30c3\u30c9\u304c\u5b9f\u884c\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>check_admin_authorization \u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001\u307e\u305a\u521d\u3081\u306b\u73fe\u5728\u306e\u30d1\u30b9(\u753b\u9762\u3092\u958b\u3044\u305f\u6642\u306e\u30d1\u30b9)\u304c <code>\/admin<\/code> \u3067\u59cb\u307e\u3063\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p><code>\/admin<\/code> \u3067\u59cb\u307e\u3063\u3066\u3044\u305f\u5834\u5408\u3001<a href=\"https:\/\/github.com\/CanCanCommunity\/cancancan\/blob\/develop\/docs\/controller_helpers.md\" title=\"authorize! \u30e1\u30bd\u30c3\u30c9\">authorize!<\/a> \u30e1\u30bd\u30c3\u30c9\u304c\u5b9f\u884c\u3055\u308c\u3066 :access_admin_page \u306e ability \u3092\u6301\u3063\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<p>ability \u3092\u6301\u3063\u3066\u3044\u305f\u5834\u5408\u306f\u4f55\u3082\u8d77\u304d\u305a\u3001\u6301\u3063\u3066\u3044\u306a\u304b\u3063\u305f\u5834\u5408\u306f AccessDenied \u3068\u3044\u3046\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<p><img src=\"https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.00.34-1024x581.png\" alt=\"\" width=\"1024\" class=\"aligncenter size-large wp-image-1258\" srcset=\"https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.00.34-1024x581.png 1024w, https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.00.34-300x170.png 300w, https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.00.34-768x436.png 768w, https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.00.34-1536x871.png 1536w, https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.00.34-304x172.png 304w, https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.00.34-282x160.png 282w, https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.00.34.png 1640w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p>\u3053\u308c\u306b\u3088\u308a\u3001ability \u3092\u6301\u3063\u3066\u3044\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5236\u9650\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<h3>AccessDenied \u30a8\u30e9\u30fc\u767a\u751f\u6642\u306b\u5225\u306e\u753b\u9762\u3078\u9077\u79fb\u3055\u305b\u308b<\/h3>\n<p>\u3057\u304b\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u64cd\u4f5c\u4e2d\u306b AccessDenied \u306e\u30a8\u30e9\u30fc\u753b\u9762\u304c\u51fa\u3066\u304d\u3066\u3057\u307e\u3046\u306e\u306f\u3042\u307e\u308a\u826f\u304f\u306a\u3044\u306e\u3067\u3001\u6b21\u306f\u3053\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u6642\u306b\u5225\u306e\u753b\u9762\u3078\u9077\u79fb\u3055\u305b\u3066\u3042\u3052\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>apprication_controller.rb \u306b\u4ee5\u4e0b\u306e\u8a18\u8ff0\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">rescue_from CanCan::AccessDenied do |_exception|\n  redirect_to root_path, alert: &#039;\u753b\u9762\u3092\u95b2\u89a7\u3059\u308b\u6a29\u9650\u304c\u3042\u308a\u307e\u305b\u3093\u3002&#039;\nend<\/code><\/pre>\n<p>\u3053\u306e\u4f8b\u3067\u306f AccessDenied \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u3068\u304d\u306b root \u30d1\u30b9\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u305b\u3001\u3055\u3089\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8868\u793a\u3055\u305b\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">&lt;%= content_tag(:div, flash[:alert], class: &quot;alert alert-danger&quot;) if flash[:alert] %&gt;<\/code><\/pre>\n<p><img src=\"https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.09.48-1024x439.png\" alt=\"\" width=\"1024\" class=\"aligncenter size-large wp-image-1259\" srcset=\"https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.09.48-1024x439.png 1024w, https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.09.48-300x129.png 300w, https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.09.48-768x329.png 768w, https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.09.48-304x130.png 304w, https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.09.48-282x121.png 282w, https:\/\/weseek.co.jp\/tech\/wp-content\/uploads\/2021\/09\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2021-09-21-3.09.48.png 1214w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p>\u30a8\u30e9\u30fc\u753b\u9762\u306b\u306a\u3089\u305a\u3001root \u30d1\u30b9\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u308c\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<h2>\u305d\u306e\u4ed6\u8a73\u3057\u3044\u89e3\u8aac\u3068\u4fbf\u5229\u306a\u6a5f\u80fd<\/h2>\n<h3>\u30a2\u30d3\u30ea\u30c6\u30a3\u306e\u30a8\u30a4\u30ea\u30a2\u30b9<\/h3>\n<p>CanCanCan \u306b\u306f :read, :create, :update, :destroy (\u3068 :manage) \u306e\u30a2\u30d3\u30ea\u30c6\u30a3\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u308c\u306b\u52a0\u3048\u3066 Rails \u306e 7 \u3064\u306e RESTful \u30a2\u30af\u30b7\u30e7\u30f3\u3068\u540c\u3058\u30a8\u30a4\u30ea\u30a2\u30b9\u304c\u81ea\u52d5\u7684\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>read: [:index, :show]<\/li>\n<li>create: [:new, :create]<\/li>\n<li>update: [:edit, :update]<\/li>\n<li>destroy: [:destroy]<\/li>\n<\/ul>\n<p>\u3053\u306e\u30a8\u30a4\u30ea\u30a2\u30b9\u304c\u5b58\u5728\u3059\u308b\u304a\u304b\u3052\u3067 authorize_resource \u4f7f\u7528\u6642\u306b\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u5bfe\u5fdc\u3059\u308b\u30a2\u30d3\u30ea\u30c6\u30a3\u3092\u30c1\u30a7\u30c3\u30af\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u30ea\u30bd\u30fc\u30b9\u306e\u81ea\u52d5\u8aad\u307f\u8fbc\u307f\u3067 Controller \u30d5\u30a1\u30a4\u30eb\u3092\u7701\u7565\u3059\u308b<\/h3>\n<p>CanCanCan \u306b\u306f\u30ea\u30bd\u30fc\u30b9\u3092\u81ea\u52d5\u3067\u8aad\u307f\u8fbc\u3080\u4fbf\u5229\u306a\u6a5f\u80fd\u304c\u5099\u308f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u6a5f\u80fd\u3092\u7528\u3044\u305f\u5834\u5408\u3001\u4f8b\u3048\u3070 index \u30e1\u30bd\u30c3\u30c9\u3060\u3068<\/p>\n<pre><code class=\"language-ruby\">def index\n  @books = Book.all\nend<\/code><\/pre>\n<p>show \u30e1\u30bd\u30c3\u30c9\u3067\u3042\u308c\u3070<\/p>\n<pre><code class=\"language-ruby\">def show\n  @book = Book.find(params[:id])\nend<\/code><\/pre>\n<p>\u306a\u3069\u3068\u3044\u3063\u305f\u30ea\u30bd\u30fc\u30b9\u3092\u8aad\u307f\u8fbc\u3080\u969b\u306b\u7528\u3044\u3089\u308c\u308b\u4e00\u822c\u7684\u306a\u51e6\u7406\u3092\u3001Controller \u30d5\u30a1\u30a4\u30eb\u306b load_resource \u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u81ea\u52d5\u3067\u884c\u3063\u3066\u304f\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u30ea\u30bd\u30fc\u30b9\u306e\u81ea\u52d5\u8aad\u307f\u8fbc\u307f\u3092\u6709\u52b9\u306b\u3057\u305f\u969b\u3001\u30e2\u30c7\u30eb\u540d\u306b\u6e96\u305a\u308b\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<br \/>\n\u4f8b\u3048\u3070 Book \u30e2\u30c7\u30eb\u306e\u5834\u5408\u3001@books \u3084 @book \u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u306b\u30ea\u30bd\u30fc\u30b9\u304c\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306b\u3088\u308a :index, :show, :new, :edit \u306e4\u3064\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b8c\u5168\u306b\u7701\u7565\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u305f\u3060\u306e CRUD \u6a5f\u80fd\u3092\u6301\u3063\u305f\u30e2\u30c7\u30eb\u306e Controller \u30d5\u30a1\u30a4\u30eb\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f8\u304d\u63db\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">class BooksController &lt; ApplicationController\n  load_resource\n\n  def create\n    Book.create(book_params)\n    redirect_to books_path\n  end\n\n  def update\n    @book.update(book_params)\n    redirect_to books_path\n  end\n\n  def destroy\n    @book.destroy\n    redirect_to books_path\n  end\n\n  private\n\n  def book_params\n    params.require(:book).permit(:title)\n  end\nend<\/code><\/pre>\n<p>read_resource \u306e\u4ed6\u306b load_and_authorize_resource \u3068\u3044\u3046\u6a5f\u80fd\u3082\u5b58\u5728\u3057\u3066\u304a\u308a\u3001\u3053\u3061\u3089\u306f\u540d\u524d\u306e\u901a\u308a\u3001read_resource \u3068 authorize_resource \u3092\u5408\u4f53\u3055\u305b\u305f\u6a5f\u80fd\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001authorize_resource, read_resource, load_and_authorize_resource \u306f :only \u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u4e00\u90e8\u306e\u30e1\u30bd\u30c3\u30c9\u3060\u3051\u6709\u52b9\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\"># index \u3068 show \u30e1\u30bd\u30c3\u30c9\u306e\u307f\u6a29\u9650\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\nauthorize_resource only: [:index, :show]<\/code><\/pre>\n<p>\u3082\u3063\u3068\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u65b9\u306f<a href=\"https:\/\/github.com\/CanCanCommunity\/cancancan\/blob\/develop\/docs\/controller_helpers.md\" title=\"\u3053\u3061\u3089\">\u3053\u3061\u3089<\/a><\/p>\n<h3>\u4ed6\u4eba\u306e\u4f5c\u6210\u3057\u305f\u30ec\u30b3\u30fc\u30c9\u3092\u64cd\u4f5c\u3067\u304d\u306a\u304f\u3059\u308b<\/h3>\n<p>\u81ea\u8eab\u3067\u4f5c\u6210\u3057\u305f\u30ec\u30b3\u30fc\u30c9\u3057\u304b\u66f4\u65b0\u30fb\u524a\u9664\u3092\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3057\u305f\u3044\u5834\u5408\u3001can \u306e\u7b2c\u4e09\u5f15\u6570\u3092\u7528\u3044\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\">class Ability\n  include CanCan::Ability\n\n  def initialize(user)\n    user ||= User.new\n\n    can [:read, :create], :all\n    can [:update, :destroy], :all, user: user\n  end\nend<\/code><\/pre>\n<p>\u4f8b\u3048\u3070\u3053\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u5168\u3066\u306e\u30e2\u30c7\u30eb\u306b\u304a\u3044\u3066\u95b2\u89a7\u3068\u4f5c\u6210\u306f\u3067\u304d\u308b\u304c\u3001\u66f4\u65b0\u3068\u524a\u9664\u306f\u81ea\u8eab\u304c\u4f5c\u6210\u3057\u305f\u3082\u306e\u3057\u304b\u884c\u3048\u306a\u3044\u3088\u3046\u306b\u3067\u304d\u307e\u3059\u3002<br \/>\n\u3061\u306a\u307f\u306b\u30a2\u30d3\u30ea\u30c6\u30a3\u306f\u914d\u5217 <code>[]<\/code> \u3092\u7528\u3044\u308b\u3053\u3068\u3067\u307e\u3068\u3081\u3066\u8a2d\u5b9a\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<h3>\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u306b\u5b9f\u884c\u6a29\u9650\u3092\u4e0e\u3048\u308b<\/h3>\n<p>\u57fa\u672c\u7684\u306b\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u306f\u4f55\u3082\u3067\u304d\u307e\u305b\u3093\u304c\u3001can \u306e\u7b2c\u4e09\u5f15\u6570\u306b <code>published: true<\/code> \u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u306a\u304f\u3066\u3082\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-ruby\"># \u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u306a\u304f\u3066\u3082 Book \u30e2\u30c7\u30eb\u306e\u95b2\u89a7\u3060\u3051\u306f\u3067\u304d\u308b\ncan :read, Book, published: true<\/code><\/pre>\n<h2>\u304a\u307e\u3051<\/h2>\n<p>\u81ea\u793e\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f ability.rb \u306b\u30a2\u30d3\u30ea\u30c6\u30a3\u306e\u8a2d\u5b9a\u3092\u8a18\u8ff0\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001Ability \u30e2\u30c7\u30eb\u3092\u4f5c\u6210\u3057\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u4e0a\u3067\u30a2\u30d3\u30ea\u30c6\u30a3\u3092\u7ba1\u7406\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n\u901a\u5e38\u3001\u6a29\u9650\u306e\u8a2d\u5b9a\u3092\u5909\u66f4\u3059\u308b\u306b\u306f Ability.rb \u3092\u66f8\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u4e0a\u3067\u30a2\u30d3\u30ea\u30c6\u30a3\u3092\u7ba1\u7406\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u4e0a\u304b\u3089\u6a29\u9650\u306e\u8a2d\u5b9a\u3092\u884c\u3048\u308b\u3088\u3046\u306b\u306a\u308b\u4ed6\u3001\u3088\u308a\u67d4\u8edf\u306a\u8a2d\u5b9a\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u7d42\u308f\u308a\u306b<\/h2>\n<p>CanCanCan \u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u6a29\u9650\u3054\u3068\u306b\u7d30\u304b\u3044\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<br \/>\n\u975e\u5e38\u306b\u4fbf\u5229\u3067\u4f7f\u3046\u30e1\u30ea\u30c3\u30c8\u3082\u5927\u304d\u3044\u306e\u3067\u3001Rails \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b devise \u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u662f\u975e\u63a1\u7528\u3092\u691c\u8a0e\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u6295\u7a3f\u306f\u3001\u5f0a\u793e\u304c\u63d0\u4f9b\u3059\u308bWESEEK TECH\u901a\u4fe1\u306e\u4e00\u74b0\u3067\u3059\u3002 WESEEK TECH\u901a\u4fe1\u3068\u306f\u3001WESEEK\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u30ad\u30e3\u30c3\u30c1\u30a2\u30c3\u30d7\u3057\u305f\u6280\u8853\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u3001tech\u30d6\u30ed\u30b0\u3092\u901a\u3058\u3066\u5b9a\u671f\u7684\u306b\u767a\u4fe1\u3057\u3066\u3044\u304f\u3082\u306e\u3067\u3059\u3002 \u306f\u3058<\/p>\n","protected":false},"author":4,"featured_media":828,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[154],"tags":[],"_links":{"self":[{"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/posts\/1211"}],"collection":[{"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/comments?post=1211"}],"version-history":[{"count":34,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/posts\/1211\/revisions"}],"predecessor-version":[{"id":4036,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/posts\/1211\/revisions\/4036"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/media\/828"}],"wp:attachment":[{"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/media?parent=1211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/categories?post=1211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/weseek.co.jp\/tech\/wp-json\/wp\/v2\/tags?post=1211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}