Rails 4 and PostgreSQL Arrays « Plataformatec BlogRails 4 supports arrays fields for PostgreSQL in a nice way, although it is not a very known feature. In order to demonstrate its usage it’s useful to explain the context where this was used. PostgreSQL Arrays and Rails Migrations Suppose we have a Product model with the following fields: name, category_id and tags. The name field will be a simple string, category_id will be the foreign key of a r
