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| author | Diego Carrion <dc.rec1@gmail.com> | 2015-06-12 18:19:00 -0300 |
|---|---|---|
| committer | Diego Carrion <dc.rec1@gmail.com> | 2015-06-12 18:19:00 -0300 |
| commit | 167ce0871b8deb714849583dc95982e9865636f3 (patch) | |
| tree | c4605e46a59cafffba3bcd45bb6ffa5651f8a834 /activerecord/lib/active_record/attribute_methods | |
| parent | 65cd9f7694a4791b9b8515073b9b1623c0970e79 (diff) | |
| download | rails-167ce0871b8deb714849583dc95982e9865636f3.tar.gz rails-167ce0871b8deb714849583dc95982e9865636f3.tar.bz2 rails-167ce0871b8deb714849583dc95982e9865636f3.zip | |
add doc about how empty serialization objects are persisted
the test case for this commit is in cd3f5db
Diffstat (limited to 'activerecord/lib/active_record/attribute_methods')
| -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+ |