X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/9456885954b0bff02721bbb14da296be212efdc4..441ef97e93a951b349356df96d8a6ef604c6cab7:/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 89f9a8886e..d1a0bc5794 100644
--- a/services/api/app/models/arvados_model.rb
+++ b/services/api/app/models/arvados_model.rb
@@ -46,6 +46,12 @@ class ArvadosModel < ActiveRecord::Base
     end
   end
 
+  class LockFailedError < StandardError
+    def http_status
+      422
+    end
+  end
+
   class InvalidStateTransitionError < StandardError
     def http_status
       422
@@ -98,6 +104,12 @@ class ArvadosModel < ActiveRecord::Base
     super(self.class.permit_attribute_params(raw_params), *args)
   end
 
+  # Reload "old attributes" for logging, too.
+  def reload(*args)
+    super
+    log_start_state
+  end
+
   def self.create raw_params={}, *args
     super(permit_attribute_params(raw_params), *args)
   end
@@ -238,7 +250,8 @@ class ArvadosModel < ActiveRecord::Base
 
     # Check if any of the users are admin.  If so, we're done.
     if users_list.select { |u| u.is_admin }.any?
-      return self
+      # Return existing relation with no new filters.
+      return where({})
     end
 
     # Collect the UUIDs of the authorized users.