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# frozen_string_literal: true
# BytesizeValidator
#
# Custom validator for verifying that bytesize of a field doesn't exceed the specified limit.
# It is different from Rails length validator because it takes .bytesize into account instead of .size/.length
#
# Example:
#
# class Snippet < ActiveRecord::Base
# validates :content, bytesize: { maximum: -> { Gitlab::CurrentSettings.snippet_size_limit } }
# end
#
# Configuration options:
# * <tt>maximum</tt> - Proc that evaluates the bytesize limit that cannot be exceeded
class BytesizeValidator < ActiveModel::EachValidator
def validate_each(record, attr, value)
size = value.to_s.bytesize
max_size = options[:maximum].call
return if size <= max_size
error_message = format(_('is too long (%{size}). The maximum size is %{max_size}.'), {
size: ActiveSupport::NumberHelper.number_to_human_size(size),
max_size: ActiveSupport::NumberHelper.number_to_human_size(max_size)
})
record.errors.add(attr, error_message)
end
end
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