_assign_attributes

# File activerecord/lib/active_record/attribute_assignment.rb, line 15
    def _assign_attributes(attributes) # :nodoc:
      multi_parameter_attributes  = {}
      nested_parameter_attributes = {}

      attributes.each do |k, v|
        if k.include?("(")
          multi_parameter_attributes[k] = attributes.delete(k)
        elsif v.is_a?(Hash)
          nested_parameter_attributes[k] = attributes.delete(k)
        end
      end
      super(attributes)

      assign_nested_parameter_attributes(nested_parameter_attributes) unless nested_parameter_attributes.empty?
      assign_multiparameter_attributes(multi_parameter_attributes) unless multi_parameter_attributes.empty?
    end