X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/1f8a68371ad34594cce4aadf5fef229588fd4ddc..34e3e51456774127d43408b7ab65c24f41373f62:/lib/consistency_validations.rb

diff --git a/lib/consistency_validations.rb b/lib/consistency_validations.rb
index 4f3881542..bcb7a26b7 100644
--- a/lib/consistency_validations.rb
+++ b/lib/consistency_validations.rb
@@ -1,12 +1,14 @@
 module ConsistencyValidations
   # Generic checks that are run for the updates and deletes of
-  # node, ways and relations. This code is here to avoid duplication, 
+  # node, ways and relations. This code is here to avoid duplication,
   # and allow the extention of the checks without having to modify the
-  # code in 6 places for all the updates and deletes. Some of these tests are 
-  # needed for creates, but are currently not run :-( 
+  # code in 6 places for all the updates and deletes. Some of these tests are
+  # needed for creates, but are currently not run :-(
   # This will throw an exception if there is an inconsistency
   def check_consistency(old, new, user)
-    if new.version != old.version
+    if new.id != old.id or new.id.nil? or old.id.nil?
+      raise OSM::APIPreconditionFailedError.new("New and old IDs don't match on #{new.class.to_s}. #{new.id} != #{old.id}.")
+    elsif new.version != old.version
       raise OSM::APIVersionMismatchError.new(new.id, new.class.to_s, new.version, old.version)
     elsif new.changeset.nil?
       raise OSM::APIChangesetMissingError.new
@@ -16,7 +18,7 @@ module ConsistencyValidations
       raise OSM::APIChangesetAlreadyClosedError.new(new.changeset)
     end
   end
-  
+
   # This is similar to above, just some validations don't apply
   def check_create_consistency(new, user)
     if new.changeset.nil?
@@ -36,7 +38,7 @@ module ConsistencyValidations
     # may alter it.
     if changeset.nil?
       raise OSM::APIChangesetMissingError.new
-    elsif user.id != changeset.user_id 
+    elsif user.id != changeset.user_id
       raise OSM::APIUserChangesetMismatchError.new
     elsif not changeset.is_open?
       raise OSM::APIChangesetAlreadyClosedError.new(changeset)