fluke/devops-service/db/validators/field_validators/image_name.rb

require_relative "base"
module Validators
  module FieldValidator
    class ImageName < Base

      MAX_LEN = 100

      def valid?
        @value.length <= MAX_LEN
      end

      def message
        "Invalid value '#{@value}': it should contains symbols 'a-zA-Z0-9_-.' and length should be more then 1 and less or equals then #{MAX_LEN}"
      end
    end
  end
end