Is there any sort of dynamic finder for polymorphic associations?
For example if I had:
class InviteNode < ActiveRecord::Base
belongs_to :inviteable, :polymorphic => true
end
I would like to be able to search by:
InviteNode.find_by_inviteable(some_object)
instead of having to do:
InviteNode.find_by_inviteable_id_and_inviteable_type(some_object.id,
some_object.class.name)
obviously I could write my own, but am I missing something? Is there a
reason
Rails doesn’t provide something like this for you?
steve dp wrote:
Is there any sort of dynamic finder for polymorphic associations?
For example if I had:
class InviteNode < ActiveRecord::Base
belongs_to :inviteable, :polymorphic => true
end
I would like to be able to search by:
InviteNode.find_by_inviteable(some_object)
instead of having to do:
InviteNode.find_by_inviteable_id_and_inviteable_type(some_object.id,
some_object.class.name)
obviously I could write my own, but am I missing something? Is there a
reason
Rails doesn’t provide something like this for you?
Because it’s a little tricky to code it up. I’ve got a test plugin for a
dynamic finder patch that does dynamic finders for belongs_to
associations already, and I’m working on the polymorphic version next.
But it’s not totally straightforward to do it in a way that makes sense.
I could bang out something that was gross, but I’m too proud to do that

http://blog.hasmanythrough.com/articles/2006/07/02/patch-test-plugin-dynamic-finders-with-belongs_to-names
–
Josh S.
http://blog.hasmanythrough.com