before_create :update_modified_by_fields
before_update :maybe_update_modified_by_fields
validate :ensure_serialized_attribute_type
+ validate :normalize_collection_uuids
has_many :permissions, :foreign_key => :head_uuid, :class_name => 'Link', :primary_key => :uuid, :conditions => "link_class = 'permission'"
end
end
+ def foreign_key_attributes
+ attributes.keys.select { |a| a.match /_uuid$/ }
+ end
+
+ def normalize_collection_uuids
+ foreign_key_attributes.each do |attr|
+ attr_value = send attr
+ if attr_value.is_a? String and
+ attr_value.match /^[0-9a-f]{32,}(\+[@\w]+)*$/
+ begin
+ send "#{attr}=", Collection.normalize_uuid(attr_value)
+ rescue
+ # TODO: abort instead of silently accepting unnormalizable value?
+ end
+ end
+ end
+ end
+
def self.resource_class_for_uuid(uuid)
if uuid.is_a? ArvadosModel
return uuid.class