diff options
Diffstat (limited to 'activerecord/lib/active_record/relation/delegation.rb')
| -rw-r--r-- | activerecord/lib/active_record/relation/delegation.rb | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/relation/delegation.rb b/activerecord/lib/active_record/relation/delegation.rb index 1d87b028ec..dd7d2582a0 100644 --- a/activerecord/lib/active_record/relation/delegation.rb +++ b/activerecord/lib/active_record/relation/delegation.rb @@ -81,7 +81,9 @@ module ActiveRecord # Cache the constants in @@subclasses because looking them up via const_get # make instantiation significantly slower. def relation_class_for(klass) - if klass && (klass_name = klass.name) + klass_name = klass.name + + if klass_name my_cache = @@subclasses.compute_if_absent(self) { ThreadSafe::Cache.new } # This hash is keyed by klass.name to avoid memory leaks in development mode my_cache.compute_if_absent(klass_name) do |