On 15 March 2010 11:14, eugenio <[email protected]> wrote:
> a "User" has_and_belongs_to_many "Roles"
> a "Role" has_and_belongs_to_many "Rights"
>
> how can i relate Users and Rights? i would like something like
> @user.rights
> i know it can be done via SQL, but i don't know if there is a more
> rails-way to do this.
> any suggestion?
you can add a "rights" method to your user that collects up all the
rights for all of the User's roles:
def rights
roles.collect { |role| role.rights }.flatten.uniq
end
This gives you a starting point... you can memoize that method if you
access it a lot, or tweak it however suits...
HTH
Michael
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