forked from enviPath/enviPy
jebus
762a6b7baf
Fixes #90 Fixes #91 Fixes #115 Fixes #104 Co-authored-by: Tim Lorsbach <tim@lorsba.ch> Reviewed-on: enviPath/enviPy#116
39 lines
1.2 KiB
Python
39 lines
1.2 KiB
Python
import logging
|
|
import os
|
|
import shutil
|
|
|
|
from django.conf import settings as s
|
|
from django.db import transaction
|
|
from django.db.models.signals import pre_delete, post_delete
|
|
from django.dispatch import receiver
|
|
|
|
from epdb.models import Node, Edge, EPModel
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
@receiver(pre_delete, sender=Node)
|
|
@transaction.atomic
|
|
def delete_orphan_edges(sender, instance, **kwargs):
|
|
# check if the node that is about to be deleted is the only start node
|
|
for edge in Edge.objects.filter(start_nodes=instance):
|
|
if edge.start_nodes.count() == 1:
|
|
edge.delete()
|
|
|
|
# same for end_nodes
|
|
for edge in Edge.objects.filter(end_nodes=instance):
|
|
# check if the node that is about to be deleted is the only start node
|
|
if edge.end_nodes.count() == 1:
|
|
edge.delete()
|
|
|
|
|
|
@receiver(post_delete, sender=EPModel)
|
|
def delete_epmodel_files(sender, instance, **kwargs):
|
|
# Delete the files on disk for the deleted model
|
|
mod_uuid = str(instance.uuid)
|
|
|
|
for f in os.listdir(s.MODEL_DIR):
|
|
if f.startswith(mod_uuid):
|
|
logger.info(f"Deleting {os.path.join(s.MODEL_DIR, f)}")
|
|
shutil.rmtree(os.path.join(s.MODEL_DIR, f))
|