lib/mongoid/criteria/queryable/mergeable.rb in mongoid-7.0.0.beta vs lib/mongoid/criteria/queryable/mergeable.rb in mongoid-7.0.0

@@ -257,10 +257,12 @@
         #
         # @since 1.0.0
         def prepare(field, operator, value)
           unless operator =~ /exists|type|size/
             value = value.__expand_complex__
-            serializer = serializers[field]
+            field = field.to_s
+            name = aliases[field] || field
+            serializer = serializers[name]
             value = serializer ? serializer.evolve(value) : value
           end
           selection = { operator => value }
           negating? ? { "$not" => selection } : selection
         end