How to make Rails 4.2 work with Postgres Jsonb?

Question

I\'ve seen a few blog posts claiming that rails 4.2 added support for the new Jsonb data type in Postgres 4.2.

However, googling gets me zero results on how to act

Answer 1

It's part of the not yet released version of Rails 4.2 (currently 4.2.0.rc3). To use the datatype, specify the jsonb type when creating a table:

create_table :users do |t|
  t.jsonb :extra_info
end

or add to an existing table

add_column :users, :extra_info, :jsonb

Since jsonb is virtually the same as json except for the internal storage, the way you work with the column is the same as well.