Why am I getting an issue when calling the get_model() function? Here is what I am trying to do:
@classmethod
def get_content_models(cls):
"""
Return all Package subclasses.
"""
is_content_model = lambda m: m is not Package and issubclass(m, Package)
return list(filter(is_content_model, models.get_models()))
This used to work before, but now after updating to the new Django, it's throwing an error. How can this be resolved?
UPDATE
Below is my model
from django.db import models
class Package(BasePackage):
"""
A package in the package tree. This is the base class that custom content types
need to subclass.
"""
parent = models.ForeignKey("Package", blank=True, null=True, related_name="children", on_delete=models.CASCADE)
titles = models.CharField(editable=False, max_length=1000, null=True)
content_model = models.CharField(editable=False, max_length=50, null=True)
in_menus = MenusField(_("Show in menus"), blank=True, null=True)
login_required = models.BooleanField(_("Login required"), default=False,
help_text=_("If checked, only logged in users can view this Package"))
itinerary = models.ManyToManyField('ItineraryItem', through="PackageItinerary")
def __str__(self):
return self.title
def save(self, *args, **kwargs):
"""
Create the titles field using the titles up the parent chain
and set the initial value for ordering.
"""
if self.id is None:
self.content_model = self._meta.object_name.lower()
self.titles = self.title
super(Package, self).save(*args, **kwargs)
@classmethod
def get_content_models(cls):
"""
Return all Package subclasses.
"""
is_content_model = lambda m: m is not Package and issubclass(m, Package)
return list(filter(is_content_model, models.get_models()))
def get_content_model(self):
"""
Provies a generic method of retrieving the instance of the custom
content type's model for this Package.
"""
return getattr(self, self.content_model, None)
modelsdefined ?