state machines definition inheritance about finite_machine HOT 3 CLOSED

I found a workaround, but first snippet was intuitive and logical IMO:

  class GenericStateMachine < FiniteMachine::Definition
    def self.inherited subclass
      subclass.callbacks do
        on_enter do |event|
          target.state = event.to
        end
      end

      super
    end
  end

from finite_machine.

The FiniteMachine::Definition is just sugar for the define method. It decoares the class with class instance methods and thus doesn't really provide inheritance as such but a more conveninent way to factor state machine instances. I'm thinking it should probably be rewritten to module to better express what it does. I find your example interesting. Could you provide more background why such inheritane would be useful? More code would be even better, would you mind provided a fuller example? I haven't had any need thus far to use the inheritance but I'm more than happy to work with you on this!

from finite_machine.

@dmgr I've implemented definition inheritance. Your initial example should work like a charm now.

from finite_machine.