Ruby on Rails: UUID as your ActiveRecord primary key Sometimes, using the good old ‘auto increment’ from your database just isn’t good enough. If you really require that all your objects have unique ID, even across systems and different databases there’s only one way go: UUID or Universally Unique IDentifier. A UUID is generated in such a way that every generated UUID in the world is unique. For e
If you need to use an explicit primary key and not an AUTO_INCREMENT with ActiveRecord I wrote this snippet that has proved very handy: module ExplicitPrimaryKey attr_accessor :pk def before_create; self.id = pk; end end Then when you call the create method supply :pk => value along with the other values. ActiveRecord is an ORM solution that grew out of Ruby on Rails. It is entirely separate and c
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