Whenever i read code like " post.objects.all()" i understand post is a class that extends models.Model class. But i can't understand what is "objects" in "post.objects.all()". Please help me to understand how oop works in django in-depth.
Posted Apr 22, 2019, 5:59 AM UTC
objects is a Manager
A Model represents a single row in a table. A Manager represents the entire table. That's why the query methods exist there, e.g. "fetch all rows", "fetch the last 10 rows", etc.
Django models are no ordinary Python classes. They behave in some very weird ways if you think about it. Thus, I wouldn't try to make sense of .objects as some OOP concept (although if you need to, it's a Manager instance), but rather as all the instances of the model it is attached to, with convenient methods to access a subset of them.
Almost any method call on .objects is going to return a QuerySet -- just like the methods on QuerySet.
Thanks everyone for answering. I got the idea
That’s the model queryset manager. Read the manual it’s there...
https://docs.djangoproject.com/en/2.2/topics/db/managers/