mastodon/app/validators/language_validator.rb

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# frozen_string_literal: true
class LanguageValidator < ActiveModel::EachValidator
include LanguagesHelper
def validate_each(record, attribute, value)
@value = value
record.errors.add(attribute, :invalid) unless valid_locale_value?
end
private
def valid_locale_value?
if @value.nil?
true
elsif @value.is_a?(Array)
@value.all? { |x| valid_locale?(x) }
else
valid_locale?(@value)
end
end
end