def Apply(self):
"""
Transition method for removing rules applied for the previous configuration of the router.
:return:
"""
regles_deprecated = Regles.objects.filter((Q(source=self) | Q(destination=self)) & Q(etat="Deprecated"))
regles_production = Regles.objects.filter((Q(source=self) | Q(destination=self)) & Q(etat="Production")).values("regle")
regles_invalides = regles_deprecated.exclude(Q(regle__in=regles_production))
deployment = RulesDeployment()
deployment.remove_rules(regles_invalides)
regles_deprecated.delete()
