STI , Single Table Inheritance (This structure is best used for
models that have identical, or very similar attributes )
trip AD << regular AD
class RegularAd < ActiveRecord::Base
end
class TripAd < RegularAd
end
migration (Rails 3.1)
class CreateAds < ActiveRecord::Migration
def change
create_table(:regular_ads) do |t|
t.string : title
t.float : price
t.string : content
t.string : username
t.integer : from
t.integer: to
end
end
end
On Feb 8, 6:10 pm, regedarek <[email protected]> wrote:
> I would like to use only one table ads on database.
>
> regular AD:
>
> > :title
> > :price
> > :content
> > :username
>
> > trip AD:
> > :title
> > :price
> > :content
> > :username
> > :from
> > :to
>
> Which associations should I use?
> Polymorphic Associations
> The has_and_belongs_to_many
> Else?
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