In my models I use STI like this
Vehicle Model: vehicle.rb
class Vehicle < ActiveRecord::Base
end
Car Model: car.rb
class Car < Vehicle
end
Bus Model: bus.rb
class Bus < Vehicle
end
If I create a Car can I somehow change it's type to Vehicle or Bus?
To permanently alter the type, change the value of the type column.
c1 = Car.first
c1.name # BMW
c1.update_attribute(:type, "Bus")
b1 = Bus.first
b1.name # BMW
To also change the object type in-memory without reloading it from the DB, use "becomes, as in
c1 = c1.becomes(Bus)
