Minimal cancan implementation

Author: matt-bernhardt

Gemfile

@@ -4,6 +4,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 ruby '3.2.2'
 
 gem 'bootsnap', require: false
+gem 'cancancan'
 gem 'graphql', '~> 2.0.27' # Locked due to https://github.com/github/graphql-client/issues/310
 gem 'graphql-client'
 gem 'http'

Gemfile.lock

@@ -102,6 +102,7 @@ GEM
     bootsnap (1.17.0)
       msgpack (~> 1.2)
     builder (3.2.4)
+    cancancan (3.5.0)
     capybara (3.39.2)
       addressable
       matrix
@@ -367,6 +368,7 @@ DEPENDENCIES
   better_errors
   binding_of_caller
   bootsnap
+  cancancan
   capybara
   climate_control
   debug

app/models/ability.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+class Ability
+  include CanCan::Ability
+
+  def initialize(user)
+    # Define abilities for the user here. For example:
+    #
+    #   return unless user.present?
+    #   can :read, :all
+    #   return unless user.admin?
+    #   can :manage, :all
+    #
+    # The first argument to `can` is the action you are giving the user
+    # permission to do.
+    # If you pass :manage it will apply to every action. Other common actions
+    # here are :read, :create, :update and :destroy.
+    #
+    # The second argument is the resource the user can perform the action on.
+    # If you pass :all it will apply to every resource. Otherwise pass a Ruby
+    # class of the resource.
+    #
+    # The third argument is an optional hash of conditions to further filter the
+    # objects.
+    # For example, here the user can only update published articles.
+    #
+    #   can :update, Article, published: true
+    #
+    # See the wiki for details:
+    # https://github.com/CanCanCommunity/cancancan/blob/develop/docs/define_check_abilities.md
+  end
+end