On 10 January 2012 22:23, Mohamad El-Husseini <[email protected]> wrote:
> Another newbie question. My dummy app has the following models:
>
> class User < ActiveRecord::Base
>   has_one :list
> end
>
> class List < ActiveRecord::Base
>   belongs_to :user
>   has_many :celebs
> end
>
> class Celeb < ActiveRecord::Base
>   belongs_to :list
> end
>
> I want to load a user's list, and include the celebs that belong to it. I
> tried the following:
>
> @user = current_user
>
> ... @list = user.list.joins(:celebs)
> ... @list = user.list(:include => :celebs)
> ... @list = user.list.includes(:celebs)

You don't normally need to use joins or includes for such things.  you
can just say
@list = @user.list
then
celebs = @list.celebs
or just
celebs = @user.list.celebs.
You may have to test for the case where @user.list is nil if it is
possible to have a user that has no list

Colin

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