X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/9707b0c9304596799d01cf5c2d1d630026a49d79..fc8e572937f2fd61bdc1e7f34a2e3f9a5cebd7ff:/services/api/app/models/arvados_model.rb

diff --git a/services/api/app/models/arvados_model.rb b/services/api/app/models/arvados_model.rb
index 308da7fa11..5f9c014bbd 100644
--- a/services/api/app/models/arvados_model.rb
+++ b/services/api/app/models/arvados_model.rb
@@ -56,6 +56,12 @@ class ArvadosModel < ActiveRecord::Base
     "#{current_api_base}/#{self.class.to_s.pluralize.underscore}/#{self.uuid}"
   end
 
+  def self.selectable_attributes(template=:user)
+    # Return an array of attribute name strings that can be selected
+    # in the given template.
+    api_accessible_attributes(template).map { |attr_spec| attr_spec.first.to_s }
+  end
+
   def self.searchable_columns operator
     textonly_operator = !operator.match(/[<=>]/)
     self.columns.select do |col|
@@ -107,6 +113,7 @@ class ArvadosModel < ActiveRecord::Base
   # If current user cannot write this object, just return
   # [self.owner_uuid].
   def writable_by
+    return [owner_uuid] if not current_user
     unless (owner_uuid == current_user.uuid or
             current_user.is_admin or
             (current_user.groups_i_can(:manage) & [uuid, owner_uuid]).any?)