Hi,
Hoping someone can help me with this. I have a :has_many :through self
referential association. Creating/Adding/Removing Products and nested
associated products in working fine apart from when you try to remove
the last existing Product of the association. The update isn't
triggered on the association table (I'm presuming because there is no
collection in the updated model to trigger the associated update/
delete).
See example below, where a Product can have many AssociatedProducts:
Tables:
create_table :products do |t|
t.string :title, :null => false
end
create_table :associated_products do |t|
t.references :product, :null => false
t.integer :associated_id, :null => false
end
Models:
class Product < ActiveRecord::Base
has_many :associated_products, :dependent => :destroy
has_many :associates, :through => :associated_products
end
class AssociatedProduct < ActiveRecord::Base
belongs_to :product
belongs_to :associate, :class_name => "Product", :foreign_key
=> :associated_id
end
Controllers:
class ProductsController < ApplicationController
active_scaffold :product do |config|
config.columns = [ :title, :associates ]
config.columns[:associates].form_ui = :select
# Same behaviour whether draggable_lists or standard checkboxes
are used
#config.columns[:associates].options = {:draggable_lists => true}
config.columns[:associates].label = "Associated Products"
end
end
Any help on this greatly appreciated.
Cheers,
Anton
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