Fixed #4459 -- Added 'raw' argument to save method, to override any pre-save processing, and modified serializers to use a raw-save. This enables serialization of DateFields with auto_now/auto_now_add. Also modified serializers to invoke save() directly on the model baseclass, to avoid any (potentially order-dependent, data modifying) behavior in a custom save() method.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@5658 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/db-api.txt

@@ -118,6 +118,23 @@ happens.
 Explicitly specifying auto-primary-key values is mostly useful for bulk-saving
 objects, when you're confident you won't have primary-key collision.
 
+Raw saves
+---------
+
+When you save an Django object, some pre-processing will occur on the the data
+that is in the object. For example, if your model has a ``DateField`` with 
+``auto_now=True`` set, the pre-save phase will alter the data in the object 
+to ensure that the date field contains the current date stamp.
+
+Although these automated changes can be very useful, there will be times when
+you just want to save the data as-is. In these cases, you can invoke a *Raw Save* 
+by passing ``raw=True`` as an argument to the ``save()`` method::
+
+    b4.save(raw=True)  # Saves object, but does no pre-processing
+
+A raw save saves all the data in your object, but performs no pre-save processing 
+on the data in the object. 
+
 Saving changes to objects
 =========================