class Jbuilder

def _set_value(key, value)
  ::Kernel.raise NullError.build(key) if @attributes.nil?
  ::Kernel.raise ArrayError.build(key) if ::Array === @attributes
  return if @ignore_nil && value.nil? or _blank?(value)
  @attributes = {} if _blank?
  @attributes[_key(key)] = value
end