Class: Statesman::Adapters::ActiveRecord

Inherits:
Object
  • Object
show all
Defined in:
lib/statesman/adapters/active_record.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(transition_class, parent_model, observer) ⇒ ActiveRecord

Returns a new instance of ActiveRecord.



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# File 'lib/statesman/adapters/active_record.rb', line 9

def initialize(transition_class, parent_model, observer)
  unless transition_class.serialized_attributes.include?("metadata")
    raise UnserializedMetadataError,
          "#{transition_class.name}#metadata is not serialized"
  end
  @transition_class = transition_class
  @parent_model = parent_model
  @observer = observer
end

Instance Attribute Details

#parent_model ⇒ Object (readonly)

Returns the value of attribute parent_model.



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# File 'lib/statesman/adapters/active_record.rb', line 7

def parent_model
  @parent_model
end

#transition_class ⇒ Object (readonly)

Returns the value of attribute transition_class.



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# File 'lib/statesman/adapters/active_record.rb', line 6

def transition_class
  @transition_class
end

Instance Method Details

#create(from, to, metadata = {}) ⇒ Object 



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# File 'lib/statesman/adapters/active_record.rb', line 19

def create(from, to, metadata = {})
  transition = transitions_for_parent.build(to_state: to,
                                            sort_key: next_sort_key,
                                            metadata: metadata)

  ::ActiveRecord::Base.transaction do
    @observer.execute(:before, from, to, transition)
    transition.save!
    @last_transition = transition
    @observer.execute(:after, from, to, transition)
    @last_transition = nil
  end
  @observer.execute(:after_commit, from, to, transition)

  transition
end

#history ⇒ Object 



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# File 'lib/statesman/adapters/active_record.rb', line 36

def history
  if transitions_for_parent.loaded?
    transitions_for_parent.sort_by(&:sort_key)
  else
    transitions_for_parent.order(:sort_key)
  end
end

#last ⇒ Object 



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# File 'lib/statesman/adapters/active_record.rb', line 44

def last
  @last_transition ||= history.last
end