# frozen_string_literal: true class HtmlValidator < ActiveModel::EachValidator ERROR_RE = /Opening and ending tag mismatch|Unexpected end tag/ def validate_each(record, attribute, value) return if value.blank? errors = html_errors(value) record.errors.add(attribute, I18n.t('html_validator.invalid_markup', error: errors.first.to_s)) unless errors.empty? end private def html_errors(str) fragment = Nokogiri::HTML.fragment(options[:wrap_with] ? "<#{options[:wrap_with]}>#{str}</#{options[:wrap_with]}>" : str) fragment.errors.select { |error| ERROR_RE.match?(error.message) } end end