diff options
| -rw-r--r-- | activemodel/lib/active_model/conversion.rb | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/activemodel/lib/active_model/conversion.rb b/activemodel/lib/active_model/conversion.rb index c7c805f1a2..80a3ba51c3 100644 --- a/activemodel/lib/active_model/conversion.rb +++ b/activemodel/lib/active_model/conversion.rb @@ -39,9 +39,11 @@ module ActiveModel # Returns an Enumerable of all key attributes if any is set, regardless # if the object is persisted or not. + # + # Note the default implementation uses persisted? just because all objects + # in Ruby 1.8.x responds to <tt>:id</tt>. def to_key - key = respond_to?(:id) && id - key ? [key] : nil + persisted? ? [id] : nil end # Returns a string representing the object's key suitable for use in URLs, |