Rails AR validates_uniqueness_of against polymorphic relationship
- by aaronrussell
Is it posible to validate the uniqueness of a child model's attribute scoped against a polymorphic relationship?
For example I have a model called field that belongs to fieldable:
class Field < ActiveRecord::Base
belongs_to :fieldable, :polymorphic => :true
validates_uniqueness_of :name, :scope => :fieldable_id
end
I have several…