Google::Protobuf::Struct can access a missing key (#3846)

1 files changed, 6 insertions, 0 deletions

diff --git a/ruby/lib/google/protobuf/well_known_types.rb b/ruby/lib/google/protobuf/well_known_types.rb
index 921ddbc0..e85fac56 100644
--- a/ruby/lib/google/protobuf/well_known_types.rb
+++ b/ruby/lib/google/protobuf/well_known_types.rb
@@ -149,6 +149,8 @@ module Google
     Struct.class_eval do
       def [](key)
         self.fields[key].to_ruby
+      rescue NoMethodError
+        nil
       end
 
       def []=(key, value)
@@ -170,6 +172,10 @@ module Google
         hash.each { |key, val| ret[key] = val }
         ret
       end
+
+      def has_key?(key)
+        self.fields.has_key?(key)
+      end
     end
 
     ListValue.class_eval do