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我正在使用带有 cancan 1.1 的 Rails 2.3.11。
我想添加一个新角色，允许用户在属于某个特定组织的那些“出版物”中创建/编辑“出版物”并创建/编辑“文章”。正如我所提到的，由于我运行的是较旧的 cancan 1.1，我无法尝试文档中的所有新示例。这是我在 Ability.rb 中尝试的一个示例：

class Ability
  include CanCan::Ability

  #additional roles require changes be made to config/environment.rb ROLES constant 
  def initialize(user)
    user ||= User.new # Guest user

    # Multirole environment

    if user.role? :admin
      can :manage, :all
      can :archive, Article
      can :review, Article
    end
   #several other roles ...

   #This is not working...I'm specify the organization that I want the super_user to be able to create and edit for

   if user.role? :super_user
     can [:create, :edit], Publication, :organization_id => 21
     can [:create, :edit], Article, :organization_id => 21  
   end

我有以下三个模型：

class Organization < ActiveRecord::Base
  #validations here

  has_many :publications, :dependent => :destroy
  has_many :articles, :through => :publications
end

class Publication < ActiveRecord::Base
  #validations here  
  has_many :articles, :dependent => :destroy

end

class Article < ActiveRecord::Base
  #validations here ...

  belongs_to :publication
  validates_associated :publication
  #...

end

感谢您的任何建议。

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