Know what errors lurk in your code? Rollbar detects and alerts you when code breaks in production. Get the stack trace, code, and data to help you d̶e̶b̶u̶g̶ defeat Ruby errors. Learn more.
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State Machine comes to the rescue when models in your application need statuses and events. There is a state_machine gem for ruby. I recommend you to spend some time studying basics before you start using it with rails. Here is a nice tutorial
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