Conflict model when create custom Notification inherit from AbstractNotification.

Like document purpose, I already need to add category to filter notification based on category but when I create custom class inherit form AbstractNotification, django raise exceptions…

# models.py

from django.db import models
from django.utils.translation import gettext_lazy as _
from notifications.base.models import AbstractNotification


class Notification(AbstractNotification):
    class Meta(AbstractNotification.Meta):
        abstract = False

    CHOICES_CATEGORY_EVENT = 'EVENT'
    CHOICES_CATEGORY_WORK = 'WORK'
    CHOICES_CATEGORY_COMMENT = 'COMMENT'
    CHOICES_CATEGORY_URGENT = 'URGENT'
    CHOICES_CATEGORY_COMPANY = 'COMPANY'
    CHOICES_CATEGORIES = (
        (CHOICES_CATEGORY_EVENT, _('Event')),
        (CHOICES_CATEGORY_WORK, _('Work')),
        (CHOICES_CATEGORY_COMMENT, _('Comment')),
        (CHOICES_CATEGORY_URGENT, _('Urgent')),
        (CHOICES_CATEGORY_COMPANY, _('Company')),
    )

    category = models.CharField(
        max_length=63,
        choices=CHOICES_CATEGORIES,
        default=None,
        null=True,
        blank=True,
    )

Exception from terminal:

bootstrap_django_dev | Exception in thread django-main-thread:
bootstrap_django_dev | Traceback (most recent call last):
bootstrap_django_dev |   File "/usr/local/lib/python3.7/threading.py", line 926, in _bootstrap_inner
bootstrap_django_dev |     self.run()
bootstrap_django_dev |   File "/usr/local/lib/python3.7/threading.py", line 870, in run
bootstrap_django_dev |     self._target(*self._args, **self._kwargs)
bootstrap_django_dev |   File "/usr/local/lib/python3.7/site-packages/django/utils/autoreload.py", line 53, in wrapper
bootstrap_django_dev |     fn(*args, **kwargs)
bootstrap_django_dev |   File "/usr/local/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run
bootstrap_django_dev |     autoreload.raise_last_exception()
bootstrap_django_dev |   File "/usr/local/lib/python3.7/site-packages/django/utils/autoreload.py", line 76, in raise_last_exception
bootstrap_django_dev |     raise _exception[1]
bootstrap_django_dev |   File "/usr/local/lib/python3.7/site-packages/django/core/management/__init__.py", line 357, in execute
bootstrap_django_dev |     autoreload.check_errors(django.setup)()
bootstrap_django_dev |   File "/usr/local/lib/python3.7/site-packages/django/utils/autoreload.py", line 53, in wrapper
bootstrap_django_dev |     fn(*args, **kwargs)
bootstrap_django_dev |   File "/usr/local/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
bootstrap_django_dev |     apps.populate(settings.INSTALLED_APPS)
bootstrap_django_dev |   File "/usr/local/lib/python3.7/site-packages/django/apps/registry.py", line 114, in populate
bootstrap_django_dev |     app_config.import_models()
bootstrap_django_dev |   File "/usr/local/lib/python3.7/site-packages/django/apps/config.py", line 211, in import_models
bootstrap_django_dev |     self.models_module = import_module(models_module_name)
bootstrap_django_dev |   File "/usr/local/lib/python3.7/importlib/__init__.py", line 127, in import_module
bootstrap_django_dev |     return _bootstrap._gcd_import(name[level:], package, level)
bootstrap_django_dev |   File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
bootstrap_django_dev |   File "<frozen importlib._bootstrap>", line 983, in _find_and_load
bootstrap_django_dev |   File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
bootstrap_django_dev |   File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
bootstrap_django_dev |   File "<frozen importlib._bootstrap_external>", line 728, in exec_module
bootstrap_django_dev |   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
bootstrap_django_dev |   File "/usr/src/dev/django/master/streams/models.py", line 5, in <module>
bootstrap_django_dev |     class Notification(AbstractNotification):
bootstrap_django_dev |   File "/usr/local/lib/python3.7/site-packages/django/db/models/base.py", line 320, in __new__
bootstrap_django_dev |     new_class._meta.apps.register_model(new_class._meta.app_label, new_class)
bootstrap_django_dev |   File "/usr/local/lib/python3.7/site-packages/django/apps/registry.py", line 229, in register_model
bootstrap_django_dev |     (model_name, app_label, app_models[model_name], model))
bootstrap_django_dev | RuntimeError: Conflicting 'notification' models in application 'notifications': <class 'notifications.models.Notification'> and <class 'master.streams.models.Notification'>.

[pandafy]

You will need to define app_label in Notification model, since app_label is defined in AbstractNotificatio.Meta so you will have to explicitly define that. It should will be fixed in #284

class Notification(AbstractNotification):
    class Meta(AbstractNotification.Meta):
        abstract = False
        app_label = 'your_application_name' 

[linhnvhicts]

can this be updated in the docs? because it doesn’t mention you need app_label, else you get the error