X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/f04211b1722e27037b305b58479157b5a492f30a..03356be5887ec2075f68e42bf8fa0928fa0ce249:/app/models/way.rb

diff --git a/app/models/way.rb b/app/models/way.rb
index 34e568e4a..6d49735f1 100644
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -199,7 +199,9 @@ class Way < ActiveRecord::Base
     new_nds = (nds - old_nodes).sort.uniq
 
     unless new_nds.empty?
-      db_nds = Node.where(:id => new_nds, :visible => true)
+      # NOTE: nodes are locked here to ensure they can't be deleted before
+      # the current transaction commits.
+      db_nds = Node.where(:id => new_nds, :visible => true).lock("for share")
 
       if db_nds.length < new_nds.length
         missing = new_nds - db_nds.collect(&:id)