Enumerize rails does not allow nil values

Question

I'm using the enumerize gem on my project, and when I add it into a column, in which I want to allow nil values, my test brokes up but not the insertion on the console.

MY_TYPES = ['foo',
            'baz',
            'bar'].freeze

enumerize :my_column, in: MY_TYPES,
                      default: nil,
                      scope: :shallow,
                      presence: false

When I try to add a nil value to my_column, the ActiveRecord validation appears:

*** ActiveRecord::RecordInvalid Exception: Validation failed: My tipes is not included in the list

But if I modify the value from the rails console, the nil value can be assigned without any trouble.

I've been tryin' with the allow_blank: true, allow_nil: true and lately with the presence: false option.

Any help would be appreciated.

Answer 1

As per the docs, an inclusion validation is added by default. You'd need to add skip_validation and then add the allow_nil inclusion validation yourself:

enumerize :my_column, in: MY_TYPES, skip_validations: true, ...
validates :my_column, inclusion: MY_TYPES, allow_nil: true

Update

I just noticed that you can also include a lambda, so you should (untested) be able to do this (without having to add the separate validation):

enumerize :my_column, in: MY_TYPES, skip_validations: -> { _1.my_column.nil? }