moving the check consistency to it's own file so that checks will be able to be loade...

[rails.git] / lib / consistency_validations.rb

diff --git a/lib/consistency_validations.rb b/lib/consistency_validations.rb
new file mode 100644 (file)
index 0000000..4becce8
--- /dev/null
+++ b/lib/consistency_validations.rb
@@ -0,0 +1,19 @@
+module ConsistencyValidations
+  # Generic checks that are run for the updates and deletes of
+  # 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 :-( 
+  # This will throw an exception if there is an inconsistency
+  def check_consistency(old, new, user)
+    if new.version != old.version
+      raise OSM::APIVersionMismatchError.new(new.version, old.version)
+    elsif new.changeset.nil?
+      raise OSM::APIChangesetMissingError.new
+    elsif new.changeset.user_id != user.id
+      raise OSM::APIUserChangesetMismatchError.new
+    elsif not new.changeset.is_open?
+      raise OSM::APIChangesetAlreadyClosedError.new
+    end
+  end
+end