Idealization codes for Donato's workflow

workflow_conception.rb

State
uid
name
possible_next_states
default_error_state
process [
	update_status,
	call_whatever,
	...
]


State.possible_next_states.map(&:next_state)

State.flow(current_status, next_desired_state) {
	can_change = current_status.possible_next_states.include(next_desired_state)
	State.process.each.call(current_status, can_change, next_desired_state)
	return can_change
}

update_status(current_status, can_change, next_desired_state) {
	next_state = can_change? next_desired_state : current_status.default_error_state
	State.update(current_state: next_desired_state)
	workflow_log_create(current_state, next_desired_state, current_status)
}

workflow_log_create(current_state, next_desired_state, current_status){
	WorkflowLog.create(current_state: current_state, next_desired_state: next_desired_state, current_status)
}

call_whatever(state_object, can_change, next_desired_state) { ... }



-------------

Model Before Create/Update...
check_workflow_actions
	Do workflow changes