hi all
I have a has_many_polymorphs relationship that involves the following classes:
class DigilearningModule < ActiveRecord::Base has_many_polymorphs :members, :from => [:digilearning_titles, :lesson_categories, :lesson_category_groups], :through => :digilearning_module_memberships, :dependent => :destroy, :uniq => true end
class DigilearningModuleMembership < ActiveRecord::Base belongs_to :digilearning_module belongs_to :member, :polymorphic => true acts_as_list :scope => :digilearning_module end
The classes listed in the from option have no further associations with DigilearningModule or DigilearningModuleMembership, besides the ones dynamically added by has_many_polymorphs.
As you can see, :uniq is set. This uniqueness is enforced on the has_many relationship created from DigilearningModule to (eg) DigilearningTitle, ie if i add a digilearning_title to a digilearning_module multiple times, then the digilearning_module still only has one digilearning_title. This is fine.
However, the uniqueness isn't enforced in the opposite direction. I can add a digilearning_module to the same digilearning_title multiple times.
Before i go and start trying to monkey patch the has_many_polymorphs code to add this uniqueness to the dynamically created has_many associations it adds to its target classes, can anyone tell me a) if this is normal b) is there an easy fix?
thanks - max
