diff options
Diffstat (limited to 'activerecord')
| -rw-r--r-- | activerecord/lib/active_record/attribute_methods/serialization.rb | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/serialization.rb b/activerecord/lib/active_record/attribute_methods/serialization.rb index fd7099e0de..ede8bba922 100644 --- a/activerecord/lib/active_record/attribute_methods/serialization.rb +++ b/activerecord/lib/active_record/attribute_methods/serialization.rb @@ -11,6 +11,8 @@ module ActiveRecord # serialized object must be of that class on assignment and retrieval. # Otherwise <tt>SerializationTypeMismatch</tt> will be raised. # + # Empty objects as +{}+ in the case of +Hash+ or +[]+ in the case of +Array+ will always be persisted as null. + # # Keep in mind that database adapters handle certain serialization tasks # for you. For instance: +json+ and +jsonb+ types in PostgreSQL will be # converted between JSON object/array syntax and Ruby +Hash+ or +Array+ |