From 5510054961a9eaa445f72117b0c2f0e81f76f99e Mon Sep 17 00:00:00 2001
From: Chneemann <Andre-Ke@gmx.de>
Date: Sun, 11 Aug 2024 09:23:49 +0200
Subject: [PATCH] add signal handler to auto-delete video file on Video model
 deletion

---
 backend/videoflix/content/apps.py       |  3 +++
 backend/videoflix/content/signals.py    | 14 ++++++++++++++
 backend/videoflix/videoflix/settings.py |  2 +-
 3 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 backend/videoflix/content/signals.py

diff --git a/backend/videoflix/content/apps.py b/backend/videoflix/content/apps.py
index 273d169..36ece36 100644
--- a/backend/videoflix/content/apps.py
+++ b/backend/videoflix/content/apps.py
@@ -4,3 +4,6 @@ from django.apps import AppConfig
 class ContentConfig(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
     name = 'content'
+    
+    def ready(self):
+        from . import signals
diff --git a/backend/videoflix/content/signals.py b/backend/videoflix/content/signals.py
new file mode 100644
index 0000000..6684ead
--- /dev/null
+++ b/backend/videoflix/content/signals.py
@@ -0,0 +1,14 @@
+from .models import Video
+from django.dispatch import receiver
+from django.db.models.signals import post_delete
+import os
+
+@receiver(post_delete, sender=Video)
+def auto_delete_file_on_delete(sender, instance, **kwargs):
+    """
+    Deletes file from filesystem
+    when corresponding `Video` object is deleted.
+    """
+    if instance.video_file:
+        if os.path.isfile(instance.video_file.path):
+            os.remove(instance.video_file.path)
\ No newline at end of file
diff --git a/backend/videoflix/videoflix/settings.py b/backend/videoflix/videoflix/settings.py
index 03d4ba9..68c7c86 100644
--- a/backend/videoflix/videoflix/settings.py
+++ b/backend/videoflix/videoflix/settings.py
@@ -51,7 +51,7 @@ INSTALLED_APPS = [
     'rest_framework.authtoken',
     'rest_framework',
     'corsheaders',
-    'content',
+    'content.apps.ContentConfig',
     'users',
 ]