How to use long id in Rails applications?

Question

How can I change the (default) type for ActiveRecord\'s IDs? int is not long enough, I would prefer long. I was surprised that there is no :long for the migrations - does on

Answer 1

I wrote a gem called activerecord-native_db_types_override that lets you alter the datatypes that will be used in your migrations.

In your Gemfile, add:

gem 'activerecord-native_db_types_override'

then in config/environment.rb, to use long ids in postgres, add:

NativeDbTypesOverride.configure({
  postgres: {
    primary_key: { name: "bigserial primary key"}
  }
})

See its README for up-to-date info.