Module: RevertiblePaperTrail::Version

Extended by:
ActiveSupport::Concern
Defined in:
lib/revertible_paper_trail/version.rb

Instance Method Summary collapse

Instance Method Details

#active_item ⇒ Object 



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# File 'lib/revertible_paper_trail/version.rb', line 19

def active_item
  # Take current item or reify latest version
  item || versions.last.reify
end

#current_item ⇒ Object 



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# File 'lib/revertible_paper_trail/version.rb', line 24

def current_item
  return nil if event == 'destroy'

  if self.next
    self.next.reify
  else
    # Use active item as it should exist
    self.item
  end
end

#previous_item ⇒ Object 



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# File 'lib/revertible_paper_trail/version.rb', line 35

def previous_item
  case event
    when "create"
      nil
    when "update"
      current_item.previous_version
    when "destroy"
      reify
  end
end

#revert ⇒ Object 



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# File 'lib/revertible_paper_trail/version.rb', line 5

def revert
  case event
    when "create"
      # Do nothing if item already destroyed again
      return unless self.item

      self.item.destroy
    when "update"
      self.reify.save
    when "destroy"
      self.reify.save
  end
end

#versions ⇒ Object 



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# File 'lib/revertible_paper_trail/version.rb', line 46

def versions
  sibling_versions
end