Yes Sir, You're Right, I did set it to has_many before i posted the first
message. It said : NoMethodError: undefined method 'map' for #<User:0x47d4d18>
Even when I try to another way using belongs_to not from your script but the
same outline with your mind and says error like the first.
What is "map" must be implemented to has_many? I think it works in any
Relational Object or Table. I dont know how your script is working well in your
Notebook.
Rie! <[EMAIL PROTECTED]> wrote: On 14/01/2008,
Booking Heaven <[EMAIL PROTECTED]> wrote:
> NOT work at me, i did same things like you. And at
> Group.find(:all).map { |g| g.users.map(&:email) }
> it says :
> NoMethodError: undefined method 'map' for #<User:0x47d4d18>
>
> I am using Rails 1.2.3 & Ruby 1.8.5 & OS XP.
make sure you've got the same AR structures (has_many :through or you
can play it with has_many, too) as mine.
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