lib/metadata/ingest/translators/form_to_attributes.rb
def store_associations_on_object(object, attribute, associations)
      values = associations.collect do |assoc|
        assoc.internal.blank? ? assoc.value : assoc.internal
      end

      # Clean up values
      values.compact!
      case values.length
        when 0 then values = nil
        when 1 then values = values.first
      end

      object.send("#{attribute}=", values)
    end
def store_associations_on_object(object, attribute, associations)
      values = associations.collect do |assoc|
        assoc.internal.blank? ? assoc.value : assoc.internal
      end

      # Clean up values
      values.compact!
      case values.length
        when 0 then values = nil
        when 1 then values = values.first
      end

      object.send("#{attribute}=", values)
    end
Stores all association data on the object at the given attribute.
 Associations with internal data use that instead of value.  If only one
 association is present, it is extracted from the array and stored as-is.