Using abstract modls

lostplaces/lostplaces_app/models.py

@@ -109,19 +109,11 @@ class Voucher(models.Model):
         return "Voucher " + str(self.code)
 
 
-class Place(Taggable, MapablePoint):
+class Place(Submittable, Taggable, MapablePoint):
     """
     Place defines a lost place (location, name, description etc.).
     """
-    
+
-    submitted_when = models.DateTimeField(auto_now_add=True, null=True)
-    submitted_by = models.ForeignKey(
-        Explorer,
-        on_delete=models.SET_NULL,
-        null=True,
-        blank=True,
-        related_name='places'
-    )
     location = models.CharField(max_length=50)
     description = models.TextField()
 
@@ -157,7 +149,7 @@ def generate_image_upload_path(instance, filename):
     return 'places/' + str(uuid.uuid4())+'.'+filename.split('.')[-1]
 
 
-class PlaceImage (models.Model):
+class PlaceImage (Submittable):
     """
     PlaceImage defines an image file object that points to a file in uploads/.
     Intermediate image sizes are generated as defined in SIZES.
@@ -171,15 +163,7 @@ class PlaceImage (models.Model):
         on_delete=models.CASCADE,
         related_name='placeimages'
     )
-    submitted_when = models.DateTimeField(auto_now_add=True, null=True)
+    
-    submitted_by = models.ForeignKey(
-        Explorer,
-        on_delete=models.SET_NULL,
-        null=True,
-        blank=True,
-        related_name='placeimages'
-    )
-
     def __str__(self):
         """
         Returning the name of the corresponding place + id 

lostplaces/lostplaces_app/tests/models/test_abstract_models.py

@@ -84,7 +84,7 @@ class SubmittableTestCase(ModelTestCase):
         )
         self.assertEqual(
             submitted_by.remote_field.on_delete,
-            models.SET_NULL
+            models.SET_NULL,
             msg='Expecting %s to be null when reference is delete (models.SET_NULL)' % (
                 str(submitted_by)
             )