An opinionated implementation of the Command pattern for Ruby applications. Cuprum wraps your business logic in a consistent, object-oriented interface and features status and error management, composability and control flow management.
Cuprum defines a utility module to rescue uncaught exceptions when calling a command.
class UnsafeCommand < Cuprum::Command
private
def process
raise 'Something went wrong.'
end
end
class SafeCommand < UnsafeCommand
include Cuprum::ExceptionHandling
end
UnsafeCommand.new.call
#=> raises a StandardError
result = SafeCommand.new.call
#=> a Cuprum::Result
result.error
#=> a Cuprum::Errors::UncaughtException error.
result.error.message
#=> 'uncaught exception in SafeCommand -' \
# ' StandardError: Something went wrong.'
Exception handling is not included by default - add include Cuprum::ExceptionHandling
to your command classes to use this feature.
Back to Documentation | Versions | 1.1 | Commands