lib/neo4j/active_rel/persistence.rb in neo4j-5.2.8 vs lib/neo4j/active_rel/persistence.rb in neo4j-5.2.9

@@ -72,10 +72,14 @@
       "Node class was #{node.class} (#{node.class.object_id}), expected #{type_class} (#{type_class.object_id})"
     end
 
     def _create_rel(from_node, to_node, props = {})
       if from_node.id.nil? || to_node.id.nil?
-        fail RelCreateFailedError, "Unable to create relationship (id is nil). from_node: #{from_node}, to_node: #{to_node}"
+        messages = []
+        messages << 'from_node ID is nil' if from_node.id.nil?
+        messages << 'to_node ID is nil' if to_node.id.nil?
+
+        fail RelCreateFailedError, "Unable to create relationship (#{messages.join(' / ')})"
       end
       _rel_creation_query(from_node, to_node, props)
     end
 
     N1_N2_STRING = 'n1, n2'