add on_validation options for validation something like captcha

[Freeza91]

show an example

omniauth.rb

Rails.application.config.middleware.use OmniAuth::Builder do
  provider :identity,  on_validation: lambda {|env| Captcha.valid_captcha?(env)}
end

Captcha.rb

class Captcha

  def self.valid_captcha?(env)
    env = env[:env]
    session = env["rack.session"]
    params = env["rack.request.form_hash"]

    # unless params['captcha'] == session['captcha']
    #   env["omniauth.identity"].errors.add(:base, 'valid captcha')
    #   return false
    # end

    true
  end
end

[pboling]

Closed by #103

Thanks @Freeza91