Ruby Language Exceptions Adding information to (custom) exceptions
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
