#1130 new
Brian P O'Rourke

No duck typing for properties in single table inheritance

Reported by Brian P O'Rourke | November 21st, 2009 @ 05:51 PM

Brought up in IRC today, this is more of an annoyance than a bug. Duck typing isn't possible with properties of subclasses in single-table-inheritance...

class Order
  include DataMapper::Resource
  property :type, Discriminator

class Debit < Order
  property :refunded, Boolean

# This works fine:
Debit.all.each |d|
  puts d.refunded

# This should be possible but will fail:
Order.all.each |o|
  puts o.refunded if o.type == Debit

A workaround is to declare all properties on the superclass, but this is an annoyance. Subclasses should be able to have properties independent of their parents.

Comments and changes to this ticket

Please Sign in or create a free account to add a new ticket.

With your very own profile, you can contribute to projects, track your activity, watch tickets, receive and update tickets through your email and much more.

New-ticket Create new ticket

Create your profile

Help contribute to this project by taking a few moments to create your personal profile. Create your profile »

People watching this ticket