New Manipulators Proposal

[brantley]

I have built a ​proposal for a new Manipulator system, which solves what I consider to be a long-standing problem in Django. Here are some of the benefits of this new system:

• Custom form views become very simple, and intuitive.
• Validation aware models are harnessed.
• Forms are raised as an exception. This allows the writer to assume the data is correct the whole way through. However, when there is a validation exception, it is handled easily.

The full proposal can be found here:
​http://code.djangoproject.com/wiki/NewManipulators

Here is a sample view using a default Create-Manipulator:

def create_poll(request):
   try:
       m = Poll.CreateManipulator()
       poll = m.process(request)
       return HttpResponseRedirect('/poll/%d/' % poll.id)
   except Form, form:
       return render_to_response('poll/create.html', {'form': form})

Feedback and criticism would be greatly appreciated.

[Simon G. <dev@…>]

Is this still an issue given the newforms framework?

[Adrian Holovaty]

This essentially *is* newforms, so we can mark it as fixed.