Transactional Route

gistfile1.txt

`import Route from 'outreach/core/route'`

# Route which manages a transaction on it's content.
# E.g. when the route is exited, the transaction will
# be rolled back
class TransactionalRoute extends Route

  resolveSession: (parentSession) ->
    @session = parentSession.newSession()

  exit: ->
    super()
    # TODO destroy the session

  actions:
    willTransition: (transition) ->
      isDirty = @currentModel.diff(@session.getShadow(@currentModel)).length > 0
      if isDirty && !transition.data.confirmed
        transition.abort()
        promise = @dialogManager.confirm
          title: "Cancel Edit"
          message: "Are you sure you want to leave this page? There are unsaved changes."
        promise.then ->
          transition.data.confirmed = true
          transition.retry()

`export default TransactionalRoute`