delete images from file system

src/account/views.py

@@ -3,6 +3,7 @@ from rest_framework import permissions
 from rest_framework.response import Response
 from rest_framework.decorators import action
 from common.permissions import IsSafeOrPatch
+from django.db.models import Sum
 
 from . import models
 from . import serializers

src/images/models.py

+import os
+
 from django.db import models
+from django.dispatch import receiver
 
 
 class Image(models.Model):
@@ -8,3 +11,10 @@ class Image(models.Model):
 
     def __str__(self):
         return str(self.id)
+
+# Deletes file from filesystem when File object is deleted.
+@receiver(models.signals.post_delete, sender=Image)
+def auto_delete_image_on_delete(sender, instance, **kwargs):
+    if instance.image:
+        if os.path.isfile(instance.image.path):
+            os.remove(instance.image.path)

src/mentors/models.py

+import os
+
 from django.db import models
 from account.models import Profile
+from django.dispatch import receiver
 
 
 class Mentor(models.Model):
@@ -16,3 +19,10 @@ class Mentor(models.Model):
 
     def __str__(self):
         return self.name
+
+# Deletes file from filesystem when File object is deleted.
+@receiver(models.signals.post_delete, sender=Mentor)
+def auto_delete_image_on_delete(sender, instance, **kwargs):
+    if instance.image:
+        if os.path.isfile(instance.image.path):
+            os.remove(instance.image.path)