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Django Model definitions define the tables to store records and they also define what an instance of that object looks like and how it behaves. objects is a special attribute on a Model class (not on the instances) that allow you to do things to all of the instances (such as query the tables). objects is a type of ModelManager.
What you want to do is define a custom manager.
Let’s say you have a model definition like so:
class SomeModel(models.Model):
pass
Well, you can define a custom manager for your model with a custom method like so:
class SomeModelManager(models.Manager):
def datesort(self):
return self.order_by('-date')
Now, you can attach your manager to your model definition and give it whatever name you want:
class SomeModel(models.Model):
sorting = SomeModelManager()
Now, you can import and use that sorting Manager:
>>> from some_app.models import SomeModel
>>> SomeModel.sorting.date() # Not called on an instance!
[sorted results]
The key thing to realize is that you do not want to work on instances of SomeModel, but the actual ModelManager itself. This is often confusing in Django because you get to them by interacting with the same class.
See the docs for more info:
