from django.db.models import Q # models values for ContentTypes which may be CircuitTermination termination types CIRCUIT_TERMINATION_TERMINATION_TYPES = ( 'region', 'sitegroup', 'site', 'location', 'providernetwork', ) CIRCUIT_GROUP_ASSIGNMENT_MEMBER_MODELS = Q( app_label='circuits', model__in=['circuit', 'virtualcircuit'] )