Class: Enum::Transitions::UpdateHandler

Inherits:
Object
  • Object
show all
Includes:
Naming
Defined in:
lib/enum/transitions/update_handler.rb

Instance Method Summary collapse

Methods included from Naming

#entering_event, #leaving_event, #transition_event

Constructor Details

#initialize(config) ⇒ UpdateHandler

Returns a new instance of UpdateHandler.

Parameters:

  • config (Enum::Transisions::Configuration) 


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# File 'lib/enum/transitions/update_handler.rb', line 7

def initialize(config)
  @config = config
end

Instance Method Details

#around_update(model) ⇒ Object

Raises:



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# File 'lib/enum/transitions/update_handler.rb', line 11

def around_update(model)
  source, target = model.changes[@config.enum]
  transition = @config.transitions.dig(source, target)

  raise Errors::TransitionNotAllowed if transition.nil?

  model.run_callbacks transition do
    model.run_callbacks leaving_event(source) do
      model.run_callbacks entering_event(target) do
        yield
      end
    end
  end
end