Native schema support

[pdiazvargas]

What

I want to have the ability to define an object schema using a library like marshmallow.

The schema definition should validate as well as automatically convert a given payload to an instance of the object as defined by the schema. Proposed syntax:

class ArtistSchema(Schema):
    name = fields.Str()

@app.route('/artist', methods=['POST'], schema=ArtistSchema())
def create_artist():
    artist = app.request.object
    save_artist(artist)
    return {"name": artist.name}