mastodon-glitch/app/validators/lines_validator.rb

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# frozen_string_literal: true
class LinesValidator < ActiveModel::EachValidator
def validate_each(record, attribute, value)
return if value.blank?
record.errors.add(attribute, :too_many_lines, limit: options[:maximum]) if options[:maximum].present? && value.split.size > options[:maximum]
end
end