Active Resource validation is reported to and from this object, which is used by ActiveResource::Base#save to determine whether the object in a valid state to be saved. See usage example in Validations.

Methods
F
Instance Public methods
from_array(messages, save_cache = false)

Grabs errors from an array of messages (like ActiveRecord::Validations). The second parameter directs the errors cache to be cleared (default) or not (by passing true).

Source: show | on GitHub 

# File activeresource/lib/active_resource/validations.rb, line 14
def from_array(messages, save_cache = false)
  clear unless save_cache
  humanized_attributes = Hash[@base.attributes.keys.map { |attr_name| [attr_name.humanize, attr_name] }]
  messages.each do |message|
    attr_message = humanized_attributes.keys.detect do |attr_name|
      if message[0, attr_name.size + 1] == "#{attr_name} "
        add humanized_attributes[attr_name], message[(attr_name.size + 1)..-1]
      end
    end

    self[:base] << message if attr_message.nil?
  end
end
from_json(json, save_cache = false)

Grabs errors from a json response.

Source: show | on GitHub 

# File activeresource/lib/active_resource/validations.rb, line 29
def from_json(json, save_cache = false)
  array = Array.wrap(ActiveSupport::JSON.decode(json)['errors']) rescue []
  from_array array, save_cache
end
from_xml(xml, save_cache = false)

Grabs errors from an XML response.

Source: show | on GitHub 

# File activeresource/lib/active_resource/validations.rb, line 35
def from_xml(xml, save_cache = false)
  array = Array.wrap(Hash.from_xml(xml)['errors']['error']) rescue []
  from_array array, save_cache
end