Marshmallow with custom operation for a field

marshmallow_operation_field.py

from src import models
from werkzeug import security
from marshmallow.fields import Field
from marshmallow import post_load, fields
import json




class Author(models.db.Model):
    id = models.db.Column(models.db.Integer, primary_key=True)
    name = models.db.Column(models.db.String(255))
    password_hash = models.db.Column(models.db.String)

    def set_password(self, password: str) -> None:
        self.password_hash = security.generate_password_hash(password)
        return self.password_hash

    def check_password(self, password: str) -> bool:
        return security.check_password_hash(self.password_hash, password)



ma = models.ma


class AuthorSchema(models.ma.SQLAlchemySchema):
    class Meta:
        model = Author
        load_instance = True

    id = ma.auto_field(dump_only=True)
    name = ma.auto_field()
    _password = fields.Str(required=True)

    @post_load
    def make_instance(self, *data, **kwargs) -> 'Author':
        instance: Author = super().make_instance(*data, **kwargs)
        # TODO: execute custom code here like:
        # instance.set_password("something")
        __import__('ipdb').set_trace()
        return instance



# from src.models import User
from src.app import create_app

# Load config
import src.settings as cfg_module

cfg: object = cfg_module.DevelopmentConfig()
app = create_app(cfg)

with app.app_context():
    author_serializer = AuthorSchema()
    data_author = [{"_password": "richard", "name": "MegaAuthor"}, {"_password": "alexis", "name": "OkAuthor"}, {"name": "Ram", "_password": "12345"}]
    authors = author_serializer.load(data_author, many=True)