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module API
module Helpers
module CustomValidators
class Absence < Grape::Validations::Base
def validate_param!(attr_name, params)
return if params.respond_to?(:key?) && !params.key?(attr_name)
raise Grape::Exceptions::Validation, params: [@scope.full_name(attr_name)], message: message(:absence)
end
end
end
end
end
Grape::Validations.register_validator(:absence, ::API::Helpers::CustomValidators::Absence)
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