Prototype top and second level APIs

[mjtamlyn]

Top level API should be ideally similar to form/serializer, but it should be informed by a "second level" API which is purely functional.

I have something like this in my head:

# Read mode
a = Adapter()
data = a.adapt(initial={'instance': model_instance}) 

# Write mode
a = Adapter()
data = a.adapt(initial={'instance': model_instance}, data=request.data)
processed_data, errors = a.validate(data)
assert not errors
output = a.process(processed_data)
assert output['instance'] == model_instance

Note that no step needs to use a.blah for any blah except the structure of a.

[phalt]

I'm happy to give this a go :)

[jpic]

Looks great! Just one quick question: how would you create a form with initial data which don't come from a model instance, ie. a plain dict ?

a.adapt(initial={'data': {'email': 'you@example.com'}})

Another question is, how do you add a form field ?

Is it possible to also write this without any model instance to see how this would look like ?