Add array support

rails 3.2.11 params patch

  def repair_empty_param_associations
    params.keys.each do |key|
      repair_nested_params(params, key, params[key])
    end
  end

  private

  def repair_nested_params(current_params, key, value)
    if key =~ /^(.*)_attributes$/ && value.nil?
      current_params[key] = []
    elsif value.is_a? Array
      value.each_with_index do |nested_value, i|
        repair_nested_params(value, i, nested_value)
      end
    elsif value.is_a? Hash
      value.keys.each do |nested_key|
        repair_nested_params(value, nested_key, value[nested_key])
      end
    end
  end