diff options
| -rw-r--r-- | activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb b/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb index b39e316423..2dd0c577d1 100644 --- a/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb +++ b/activesupport/lib/active_support/core_ext/class/inheritable_attributes.rb @@ -118,7 +118,8 @@ class Class # :nodoc: end private - EMPTY_INHERITABLE_ATTRIBUTES = {}.freeze + # Prevent this constant from being created multiple times + EMPTY_INHERITABLE_ATTRIBUTES = {}.freeze unless const_defined?(:EMPTY_INHERITABLE_ATTRIBUTES) def inherited_with_inheritable_attributes(child) inherited_without_inheritable_attributes(child) if respond_to?(:inherited_without_inheritable_attributes) |