app/validators/note_length_validator.rb

   1 # frozen_string_literal: true
   2
   3 class NoteLengthValidator < ActiveModel::EachValidator
   4   def validate_each(record, attribute, value)
   5     record.errors.add(attribute, I18n.t('statuses.over_character_limit', max: options[:maximum])) if too_long?(value)
   6   end
   7
   8   private
   9
  10   def too_long?(value)
  11     countable_text(value).mb_chars.grapheme_length > options[:maximum]
  12   end
  13
  14   def countable_text(value)
  15     return '' if value.nil?
  16
  17     value.dup.tap do |new_text|
  18       new_text.gsub!(FetchLinkCardService::URL_PATTERN, 'x' * 23)
  19       new_text.gsub!(Account::MENTION_RE, '@\2')
  20     end
  21   end
  22 end