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Я подключаю Django к MongoDB, где есть встроенные документы. Я следил за документацией по https://djongo.readthedocs.io/docs/using-django-with-mongodb-data-fields /. Однако я получаю сообщение об ошибке «модуль ‘django.db.models’ не имеет атрибута ‘EmbeddedModelField»

models.py

 from django.db import models
from django import forms
from datetime import datetime

class Code(models.Model):
    code = models.CharField(max_length=3)
    quantity = models.IntegerField()
    purchasePrice = models.FloatField(default=1, blank=False, null=False)
    datetimeBuy = models.DateTimeField(default=datetime.now, blank=False, null=False)

    class Meta:
        abstract = True

class Portfolio(models.Model):
    username = models.CharField(primary_key=True, max_length=65, default="", blank=False, null=False)
    codes = models.EmbeddedModelField(model_container=Code,)
  

Трассировка стека

 Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x043D9ED0>
Traceback (most recent call last):
  File "C:Pythonlibsite-packagesdjangoutilsautoreload.py", line 225, in wrapper
    fn(*args, **kwargs)
  File "C:Pythonlibsite-packagesdjangocoremanagementcommandsrunserver.py", line 112, in inner_run
    autoreload.raise_last_exception()
  File "C:Pythonlibsite-packagesdjangoutilsautoreload.py", line 248, in raise_last_exception
    raise _exception[1]
  File "C:Pythonlibsite-packagesdjangocoremanagement__init__.py", line 327, in execute
    autoreload.check_errors(django.setup)()
  File "C:Pythonlibsite-packagesdjangoutilsautoreload.py", line 225, in wrapper
    fn(*args, **kwargs)
  File "C:Pythonlibsite-packagesdjango__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:Pythonlibsite-packagesdjangoappsregistry.py", line 112, in populate
    app_config.import_models()
  File "C:Pythonlibsite-packagesdjangoappsconfig.py", line 198, in import_models
    self.models_module = import_module(models_module_name)
  File "C:Pythonlibimportlib__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 978, in _gcd_import
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
  File "C:UsersAdministratorDesktopWebAppsDjangoStockViewbackendsrcportfoliomodels.py", line 25, in <module>
    class Portfolio(models.Model):
  File "C:UsersAdministratorDesktopWebAppsDjangoStockViewbackendsrcportfoliomodels.py", line 29, in Portfolio
    codes = models.EmbeddedModelField(model_container=Code,)
AttributeError: module 'django.db.models' has no attribute 'EmbeddedModelField'
  

Спасибо.

1. до djongo 1.3.1 было ‘EmbeddedModelField’, после этого оно было преобразовано в ‘EmbeddedField’

   2. Теперь он выдаст вам ошибку типа «django.core.exceptions.AppRegistryNotReady: модели еще не загружены.»

   поэтому понизьте djongo с версии 1.3.2 по умолчанию до 1.3.1