根据所有文档，该:read操作被别名为:index和:show：
alias_action :index, show, :to => :read
但是，请考虑以下具有嵌套资源的场景：
resources :posts
resources :comments
end
如果我这样定义能力：
# ability.rb
can :read, Post
can :show, Comment
# comments_controller.rb
load_and_authorize_resource :organization, :find_by => :permalink
load_and_authorize_resource :membership, :through => :organization
事情按预期工作。但是，如果我将:read操作更改为 [:index, :show]：
# ability.rb
can [:index, :show], Post
can :show, Comment
# comments_controller.rb
load_and_authorize_resource :organization, :find_by => :permalink
load_and_authorize_resource :membership, :through => :organization
我未经授权访问/posts/:post_id/comments,/posts/:post_id/comments/:id等。但是，我仍然可以同时访问:index和:show。posts_controller
如果它们的行为不同，这些动作怎么可能被“混淆”？
在我的摆弄中，我还遇到了以下情况。更改load_and_authorize_resource为以下允许的访问权限：
# ability.rb
can [:index, :show], Post
can :show, Comment
# comments_controller.rb
load__resource :organization, :find_by => :permalink
load_and_authorize_resource :membership, :through => :organization
有人可以解释这里发生了什么吗？