Module: Estate::Logic::CommonLogic

Defined in:
lib/estate/logic/common_logic.rb

Instance Method Summary collapse

Instance Method Details

#config_for(klass) ⇒ Object 



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# File 'lib/estate/logic/common_logic.rb', line 27

def config_for(klass)
  state_machine_name = klass.is_a?(Class) ? klass.name : klass.class.name
  Estate::StateMachine.state_machines[state_machine_name][:config]
end

#transition_allowed?(state_machine_name, from_state, to_state) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/estate/logic/common_logic.rb', line 23

def transition_allowed?(state_machine_name, from_state, to_state)
  from_state.nil? || Estate::StateMachine.transition_exists?(state_machine_name, from_state, to_state)
end

#validate_state_changes(instance, from_state, to_state) ⇒ Object 



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# File 'lib/estate/logic/common_logic.rb', line 6

def validate_state_changes(instance, from_state, to_state)
  state_machine_name = instance.class.name

  if from_state == to_state
    if from_state.nil? && !config_for(instance)[:empty_initial_state]
      add_error(instance, "empty `#{config_for(instance)[:column_name]}` is not allowed")
    end
  elsif to_state.nil?
    add_error(instance, 'transition to empty state is not allowed')
  elsif !Estate::StateMachine.state_exists?(state_machine_name, to_state)
    add_error(instance, "state `#{to_state}` is not defined")
  elsif !transition_allowed?(state_machine_name, from_state, to_state)
    add_error(instance, "transition from `#{from_state}` to `#{to_state}` is not allowed",
              attribute: config_for(instance)[:column_name])
  end
end