Difference between model classes and model instances in Django (documentation)

Question

I was reading Django Documentation and I got across this line.

     Managers are only accessible via model classes, not the model 
     instances.

What is the meaning of this line? I am not able to comprehend this. I know what are Model classes ( Represents the Table in Database if I am not wrong). Are the model instances same as what we call "objects" sometimes?

What does this line mean actually? IS this some OOP concept or just Django?

ruddra · Accepted Answer · 2019-06-21 07:03:50Z

3

Lets say you have a model X:

class X(models.Model):
    pass

Now if you want to access the Manager method, you need to access like this:

X.objects.all()

But the following line will not work:

> x = X()  # model instance
> x.save()
> x.objects  << will throw error

FYI: its django specific, not OOP.

answered Jun 21, 2019 at 7:03

ruddra

52.1k7 gold badges82 silver badges105 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Mohammad Monir Hossain Over a year ago

'MODEL' is the representation of an entire 'TABLE' of your database that has a 'MANAGER' and you can do operations (i.e query, crud) through this manager. On the contrary, 'MODEL INSTANCE' is a single 'ROW' of an entire 'TABLE' of your database which undeniably does not contain any manager. Hope this summarizes the concept.

Collectives™ on Stack Overflow

Difference between model classes and model instances in Django (documentation)

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related