Ruby on Rails

Hi!

There are many ways to solve this problem.

One sugestion, maybe not the better: you can use the method kind_of?
to see if roles is a Array.

roles.kind_of? Array
(will return true)

Then, you could build your logic upon this.

Best Regards,
Everaldo

On Thu, May 31, 2012 at 2:04 PM, Mohamad El-Husseini
<husseini.mel@gmail.com> wrote:
> I'm trying to use CanCan to an account scoped application. I wrote this
> method in my ability class:
>
>     roles = user.roles.find_by_account_id(account.id)
>     if roles.any? { |role| role.type == "Ownership" }
>       can :edit, Account
>     else
>       can :read, :all
>     end
>
> The trouble is, "any?" works when "roles" is an array. Sometimes, however,
> user.roles returns only one object any other times my return nil. So calling
> roles.any? causes an error. How do I work around this?
>
> My setup is User has_many Accounts through :roles, and vice-versa.
>
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