TODO.md

@@ -155,6 +155,10 @@ Following the PostgreSQL features list on [this page](https://www.postgresql.org
   - [x] Check how it works with `human_attribute_name`
     - [x] It already works fine using dot syntax `'published.url'` *TEST*
 
+## Rails features to take advantage
+
+[`#compose_of` for composite types](https://api.rubyonrails.org/classes/ActiveRecord/Aggregations/ClassMethods.html)
+
 ## Backend
 
 - [ ] Create view and materialized view [DOCS VIEW](https://www.postgresql.org/docs/9.2/static/sql-createview.html) [DOCS MATERIALIZED VIEW](https://www.postgresql.org/docs/9.3/static/sql-creatematerializedview.html)