Ajout de Pundit

Gemfile

@@ -53,6 +53,8 @@ gem "heroicon"
 # Use Active Storage variants [https://guides.rubyonrails.org/active_storage_overview.html#transforming-images]
 # gem "image_processing", "~> 1.2"
 
+gem 'pundit', "~> 2.1.1"
+
 group :development, :test do
   # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
   gem "debug", platforms: %i[ mri mingw x64_mingw ]

Gemfile.lock

@@ -142,6 +142,8 @@ GEM
     public_suffix (4.0.6)
     puma (5.5.2)
       nio4r (~> 2.0)
+    pundit (2.1.1)
+      activesupport (>= 3.0.0)
     racc (1.6.0)
     rack (2.2.3)
     rack-test (1.1.0)
@@ -251,6 +253,7 @@ DEPENDENCIES
   importmap-rails
   jbuilder
   puma (~> 5.0)
+  pundit (~> 2.1.1)
   rails (~> 7.0.0)
   redis (~> 4.0)
   selenium-webdriver

app/controllers/application_controller.rb

@@ -1,3 +1,4 @@
 class ApplicationController < ActionController::Base
   include Authentication
+  include Pundit
 end

app/controllers/users_controller.rb

@@ -3,7 +3,8 @@ class UsersController < ApplicationController
 
   # GET /users or /users.json
   def index
-    @users = User.all
+    @users = policy_scope(User)
+    # @users = User.all
   end
 
   # GET /users/1 or /users/1.json

app/policies/application_policy.rb

@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+class ApplicationPolicy
+  attr_reader :user, :record
+
+  def initialize(user, record)
+    @user = user
+    @record = record
+  end
+
+  def index?
+    false
+  end
+
+  def show?
+    false
+  end
+
+  def create?
+    false
+  end
+
+  def new?
+    create?
+  end
+
+  def update?
+    false
+  end
+
+  def edit?
+    update?
+  end
+
+  def destroy?
+    false
+  end
+
+  class Scope
+    def initialize(user, scope)
+      @user = user
+      @scope = scope
+    end
+
+    def resolve
+      scope.all
+    end
+
+    private
+
+    attr_reader :user, :scope
+  end
+end

app/policies/user_policy.rb

@@ -0,0 +1,11 @@
+class UserPolicy < ApplicationPolicy
+  class Scope < Scope
+    def resolve
+      if user.admin?
+        scope.all
+      else
+        scope.where(id: user.id)
+      end
+    end
+  end
+end

app/views/layouts/application.html.erb

@@ -76,7 +76,8 @@
       </div>
 
       <div>
-        <%= controller_name %>
+        Controller: <%= controller_name %>
+        User: <%= current_user.email %>
       </div>
     </div>
   </body>