class ManyStoreAssociation < Association
  include StoreAssociation
  include ManyAssociation
  
  def default_input_type
    :store_many
  end
  
  def typecast(value, record)
    return ChangeSensitiveArray.new(record, name, []) if value.blank?
    raise "ManyStoreAssociation values must be enumerable (#{name})" unless value.respond_to?(:each)
    ChangeSensitiveArray.new(record, name, all(value, record))
  end
  
  def untypecast(value, record)
    return nil if value.blank?
    raise "ManyStoreAssociation values must be enumerable (#{name})" unless value.respond_to?(:each)
    
    store = record.get_raw(name) || []
    store.clear
    value.each do |associated_record|
      store << associated_record.id
    end
    store
  end
  
  def default
    @options['default'] || []
  end
end

Field::TYPES['many_store'] = ManyStoreAssociation