--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parts/django/tests/modeltests/files/models.py	Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,34 @@
+"""
+42. Storing files according to a custom storage system
+
+``FileField`` and its variations can take a ``storage`` argument to specify how
+and where files should be stored.
+"""
+
+import random
+import tempfile
+
+from django.db import models
+from django.core.files.base import ContentFile
+from django.core.files.storage import FileSystemStorage
+
+
+temp_storage_location = tempfile.mkdtemp()
+temp_storage = FileSystemStorage(location=temp_storage_location)
+
+# Write out a file to be used as default content
+temp_storage.save('tests/default.txt', ContentFile('default content'))
+
+class Storage(models.Model):
+    def custom_upload_to(self, filename):
+        return 'foo'
+
+    def random_upload_to(self, filename):
+        # This returns a different result each time,
+        # to make sure it only gets called once.
+        return '%s/%s' % (random.randint(100, 999), filename)
+
+    normal = models.FileField(storage=temp_storage, upload_to='tests')
+    custom = models.FileField(storage=temp_storage, upload_to=custom_upload_to)
+    random = models.FileField(storage=temp_storage, upload_to=random_upload_to)
+    default = models.FileField(storage=temp_storage, upload_to='tests', default='tests/default.txt')