class ActiveModel::Validations::CsvValidator

Public Instance Methods

validate_each(record, attribute, value) click to toggle source
# File lib/activemodel/validations/csv_validator.rb, line 8
def validate_each(record, attribute, value)
  return if value.nil?

  content = NKF.nkf('-w', File.read(value.path, universal_newline: true))
  rows = CSV.parse(content, headers: :first_row, converters: :integer)

  if options[:max].present? && rows.size > options[:max]
    record.errors.add(attribute, :max_rows, **options.slice(:max).merge(rows: rows.size))
  end

  if options[:headers].present?
    missing_headers = options[:headers] - rows.headers
    if missing_headers.present?
      record.errors.add(attribute, :missing_headers, missing_headers: missing_headers.to_sentence)
    end
  end
rescue CSV::MalformedCSVError
  record.errors.add(attribute, :invalid_csv)
end