gistfile1.txt

Currency model migration:
   create_table :currencies do |t|
      t.decimal :value, :precision => 12, :scale => 2

      t.timestamps
    end

Environment:

  config.gem "delocalize"
  config.i18n.default_locale = 'pt-BR'

locales/pt-BR.yml:

pt-BR:
  number:
    format:
      separator: ","
      delimiter: .
      precision: 3