Apologies in advance if I am making a mistake, but I was having some trouble following the validation block example from the repo readme. I think perhaps the example has a minor typo?

validates :first_name do |object, name, value|
  object.errors[name] << "must be over 4 chars long" if value.length <= 4

After digging into the library code a bit I was able to get things working by accessing the @errors hash as object._errors. For example, in my code:

validates :domain do |object, name, value|
  regex = /^www\.[a-z]+\.com$/
  message = 'domain must be formatted like www.domain.com'
  object._errors[name] << message unless value =~ regex
end

The hash returned by the object.errors accessor was not initialized properly if a validation block was the first error reached but seemed to work fine if there was another validation clause failing.

Also want to say - Really happy I found this gem. Has been working great for what I'm trying to do using an existing python flask-restless API as a data service for my Rails front end. ActiveResource was not easy to get working and other gems didn't have the nice ActiveRecord-like features. Thanks so much!