Resize original images, name files with placename in filename, sharpen.

django_lostplaces/lostplaces/models.py

@@ -144,20 +144,25 @@ class Place(Submittable, Taggable, Mapable):
 def generate_image_upload_path(instance, filename):
     """
     Callback for generating path for uploaded images.
+    Returns filename as: placepk-placename{-rndstring}.jpg
     """
 
-    return 'places/' + str(uuid.uuid4())+'.'+filename.split('.')[-1]
+    return 'places/' + str(instance.place.pk) + '-' + str(instance.place.name) + '.' + filename.split('.')[-1]
 
 
 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.
+    Intermediate image sizes are generated as defined in THUMBNAIL_ALIASES.
     PlaceImage references a Place to which it belongs.
     """
 
     description = models.TextField(blank=True)
-    filename = ThumbnailerImageField(upload_to=generate_image_upload_path)
+    filename = ThumbnailerImageField(
+        upload_to=generate_image_upload_path, 
+        resize_source=dict(size=(2560, 2560), 
+        sharpen=True)
+    )
     place = models.ForeignKey(
         Place,
         on_delete=models.CASCADE,