It is the convention in Rails
A Physician (singular)  has many appointments (plural)
An Appointment (singular) belongs to one patient (singular)

2009/2/11 Valentino Lun <rails-mailing-l...@andreas-s.net>

>
> Dear all
>
> Refer to http://guides.rails.info/association_basics.html
>
> Why :physician and :patient some with (s), and some not...? It actually
> refer to the class name or table name? ** really confuse >_<. Can
> someone explain it? Is it a convention of rail? Thank you.
>
> class Physician < ActiveRecord::Base
>  has_many :appointments
>  has_many :patients, :through => :appointments
> end
>
> class Appointment < ActiveRecord::Base
>  belongs_to :physician
>  belongs_to :patient
> end
>
> class Patient < ActiveRecord::Base
>  has_many :appointments
>  has_many :physicians, :through => :appointments
> end
>
> Many thanks
> Valentino
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>

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