Added configurable file URL constructor.

database_files/models.py

 import base64
 
+import settings as _settings
+
 from django.conf import settings
 from django.db import models
 from django.utils import timezone

database_files/settings.py

+import os
+
+from django.conf import settings
+from django.core.urlresolvers import reverse
+
+def URL_METHOD_1(name):
+    """
+    Construct file URL based on media URL.
+    """
+    return os.path.join(settings.MEDIA_URL, name)
+
+def URL_METHOD_2(name):
+    """
+    Construct file URL based on configured URL pattern.
+    """
+    return reverse('database_file', kwargs={'name': name})
+
+URL_METHODS = (
+    ('URL_METHOD_1', URL_METHOD_1),
+    ('URL_METHOD_2', URL_METHOD_2),
+)
+
+DATABASE_FILES_URL_METHOD_NAME = getattr(
+    settings,
+    'DATABASE_FILES_URL_METHOD',
+    'URL_METHOD_1')
+
+if callable(DATABASE_FILES_URL_METHOD_NAME):
+    method = DATABASE_FILES_URL_METHOD_NAME
+else:
+    method = dict(URL_METHODS)[DATABASE_FILES_URL_METHOD_NAME]
+
+DATABASE_FILES_URL_METHOD = setattr(
+    settings,
+    'DATABASE_FILES_URL_METHOD',
+    method)

database_files/storage.py

@@ -108,8 +108,7 @@ class DatabaseStorage(FileSystemStorage):
         """
         Returns the web-accessible URL for the file with filename `name`.
         """
-        return os.path.join(settings.MEDIA_URL, name)
-        #return reverse('database_file', kwargs={'name': name})
+        return settings.DATABASE_FILES_URL_METHOD(name)
     
     def size(self, name):
         """