numericality matcher can only handle column-backed attributes

[ksol]

Hello,

Since upgrading to 3.0.1 some of my validate_numericality_of are failing with this error :

NoMethodError: undefined method `type' for nil:NilClass
from ~/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/shoulda-matchers-3.0.1/lib/shoulda/matchers/active_model/validate_numericality_of_matcher.rb:442:in `column_type'

After a little bit of research, this is because the attribute I'm not validating is not (directly) backed by a column. In my case, the attribute is a "shortcut" accessor for data nested in a json column (in postgre), so there is no column-type associated.

I don't know how this should be handled, but if someone were to point me in the right direction, I'd be happy to fix this myself and open a PR.

Thanks for your time, and have a nice day !

[mcmire]

You're in luck, because there's already a PR open to fix this issue: #822 :)

I've been a little short on time lately, but I will try to merge it in soon.

[ksol]

eh, my bad. I only checked for issues, not PRs. Thanks for the update !