delete files after model instance deleted

qgis-app/base/models/processing_models.py

@@ -3,6 +3,7 @@
 """
 import datetime
 import uuid
+import os
 
 from django.db import models
 from django.contrib.auth.models import User
@@ -121,6 +122,11 @@ def save(self, *args, **kwargs):
         self.modified_date = datetime.datetime.now()
         super().save(*args, **kwargs)
 
+    def delete(self, *args, **kwargs):
+        if os.path.isfile(self.file.path):
+            os.remove(self.file.path)
+        super(Resource, self).delete(*args, **kwargs)
+
     def __str__(self):
         return "%s" % (self.name)
 

qgis-app/wavefronts/models.py

@@ -1,4 +1,5 @@
 import os
+import shutil
 
 from preferences.models import Preferences
 
@@ -45,6 +46,14 @@ def extension(self):
     def get_absolute_url(self):
         return reverse('wavefront_detail', args=(self.id,))
 
+    def delete(self, *args, **kwargs):
+        if os.path.isfile(self.file.path):
+            path, _ = os.path.split(self.file.path)
+            if not path.endswith(WAVEFRONTS_STORAGE_PATH):
+                # remove folder and the content
+                shutil.rmtree(path)
+        super(Wavefront, self).delete(*args, **kwargs)
+
 
 class Review(ResourceReview):
     """