Nested schema resolution directly from dictionaries

[PMLP-novo]

I want to be able to create nested objects in the definition of the primary object, such that I can pass in dictionaries that does not know about avro.

So from the tutorial:

from dataclasses import dataclass

import typing

from dataclasses_avroschema import AvroModel


@dataclass
class Address(AvroModel):
    "An Address"
    street: str
    street_number: int

@dataclass
class User(AvroModel):
    "User with multiple Address"
    name: str
    age: int
    addresses: typing.List[Address]

data_user = {
    "name": "john",
    "age": 20,
    "addresses": [ {
    "street": "test",
    "street_number": 10,
}],
}
user = User(**data_user)
assert type(user.addresses[0]) is Address

Inpiration for an implimentaion can be found on https://stackoverflow.com/questions/51564841/creating-nested-dataclass-objects-in-python/65326010

In order not to introduce backwards inconvertabilities an optional init argument or an alternative init could be introduced:

user = User(**data_user, nested=True)
assert type(user.addresses[0]) is Address


user = User.nested_init(**data_user)
assert type(user.addresses[0]) is Address

[marcosschroh]

Now you can use parse_obj to Cested schema resolution directly from dictionaries.
Documentation and for pydantic batteries

closed by #170