Ruby-on-rails-3 – Access acquisition parameters in Cancan

class ApplicationController 
 ...

 def current_ability 
 @current_ability ||= Ability.new(current_user, params[:token])
 end

end

class Ability
 include CanCan::Ability

 def initialize(user, token=nil)
 ... 
 can :read, Article, :tokens => {:token => token }
 ...
 end

end

Is it possible to access the parameters passed in the url in CanCan? I am trying to authenticate guests based on the token in the URL.

Thank you!

I recently implemented a similar function using the method described here:

https://github.com/ ryanb/cancan/wiki/Accessing-request-data

In my case, it looks like this:

application/controller/application_controller.rb:

class ApplicationController 
 ...

 def current_ability
 @current_ability ||= Ability.new (current_user, params[:token])
 end

end

application/model/ability.rb:

class Ability
 include CanCan::Ability

 def initialize(user, token=nil)
 ...
 can :read, Article, :tokens => {:token => token }
 ...
 end

end