class Grape::Validations::Validators::RegexpValidator

def initialize(attrs, options, required, scope, opts)
  super
  @value = option_value
end

def validate_param!(attr_name, params)
  return unless hash_like?(params) && params.key?(attr_name)
  return if Array.wrap(params[attr_name]).all? { |param| param.nil? || scrub(param.to_s).match?(@value) }
  validation_error!(attr_name)
end