def make_relation_back(user, link, relation_back):
if link is not None and relation_back != '':
new_link = Link(user=user)
new_link.node1 = link.node2
new_link.node2 = link.node1
new_link.provider1 = link.provider2
new_link.provider2 = link.provider1
new_link.relation = relation_back
new_link.save()
def make_relation(user, parent_node_id, parent_node_provider, node_id,
node_provider, relation, relation_back):
link = Link(user=user,
node1=parent_node_id,
provider1=parent_node_provider)
link.node2 = node_id
link.provider2 = node_provider
link.relation = relation
link.save()
make_relation_back(user, link, relation_back)
