Ruby Language Exceptions Adding information to (custom) exceptions
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Example
It may be helpful to include additional information with an exception, e.g. for logging purposes or to allow conditional handling when the exception is caught:
class CustomError < StandardError
attr_reader :safe_to_retry
def initialize(safe_to_retry = false, message = 'Something went wrong')
@safe_to_retry = safe_to_retry
super(message)
end
end
Raising the exception:
raise CustomError.new(true)
Catching the exception and accessing the additional information provided:
begin
# do stuff
rescue CustomError => e
retry if e.safe_to_retry
end
