diff options
Diffstat (limited to 'guides/source')
-rw-r--r-- | guides/source/active_record_postgresql.md | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/guides/source/active_record_postgresql.md b/guides/source/active_record_postgresql.md index 66a11e5785..5e58d5baeb 100644 --- a/guides/source/active_record_postgresql.md +++ b/guides/source/active_record_postgresql.md @@ -242,10 +242,12 @@ article.save! ### UUID -* [type definition](http://www.postgresql.org/docs/9.3/static/datatype-uuid.html) -* [generator functions](http://www.postgresql.org/docs/9.3/static/uuid-ossp.html) +* [type definition](http://www.postgresql.org/docs/9.4/static/datatype-uuid.html) +* [pgcrypto generator function](http://www.postgresql.org/docs/9.4/static/pgcrypto.html#AEN159361) +* [uuid-ossp generator functions](http://www.postgresql.org/docs/9.4/static/uuid-ossp.html) -NOTE: you need to enable the `uuid-ossp` extension to use uuid. +NOTE: you need to enable the `pgcrypto` (only PostgreSQL >= 9.4) or `uuid-ossp` +extension to use uuid. ```ruby # db/migrate/20131220144913_create_revisions.rb @@ -356,12 +358,13 @@ A point is casted to an array containing `x` and `y` coordinates. UUID Primary Keys ----------------- -NOTE: you need to enable the `uuid-ossp` extension to generate UUIDs. +NOTE: you need to enable the `pgcrypto` (only PostgreSQL >= 9.4) or `uuid-ossp` +extension to generate random UUIDs. ```ruby # db/migrate/20131220144913_create_devices.rb -enable_extension 'uuid-ossp' unless extension_enabled?('uuid-ossp') -create_table :devices, id: :uuid, default: 'uuid_generate_v4()' do |t| +enable_extension 'pgcrypto' unless extension_enabled?('pgcrypto') +create_table :devices, id: :uuid, default: 'gen_random_uuid()' do |t| t.string :kind end |