Optional belongs_to association throws NoMethodError

[rromanchuk]

class Foo < ApplicationRecord
  belongs_to :bar, optional: true
end

class FooSerializer
  include FastJsonapi::ObjectSerializer
 
  belongs_to :bar

end

On a nil bar_id the serializer throws a fatal
NoMethodError (undefined method id' for nil:NilClass):`

[shishirmk]

This should be released in version 1.2 of the gem

[kevincolten]

This does not seem to be fixed in 1.2

[kevincolten]

Was able to get it working with https://github.com/Netflix/fast_jsonapi/tree/release-1.2.1#conditional-relationships