Rails 3: Handle ActiveRecord::RecordNotUnique Exception

Question

How can I handle ActiveRecord::RecordNotUnique exception in the controller? Thanks

Edit: I\'m getting that exception when generating an

Answer 1

You can add a uniqueness validation and still have a chance to change the code without having to use rescue.

couponcode.rb

validates_uniqueness_of :code

controller:

@couponcode = Couponcode.new(:user_id => current_user.id)
begin
  couponcode.code = generate_code
  # might want to break out after a limit here
end until @couponcode.valid?
@couponcode.save

But you could also use a uuid and it would be unique without a check.