This was introduced in 1.8 (which is great if you move to 1.8 or beyond), but if you are trying to go step by step, 1.7 was not a fun release to migrate to. The

This was introduced in 1.8 (which is great if you move to 1.8 or beyond), but if you are trying to go step by step, 1.7 was not a fun release to migrate to. There were also many problems with custom user model and the like. 1.7 was a very important release in the history of Django, just not a fun release to move to if you had a large codebase.