[Solved] Given this code, what will be printed when a new instance of MyModel is saved?from django.db.models.signals import post_save from django.... | Django

Django - Signals

Given this code, what will be printed when a new instance of MyModel is saved?

from django.db.models.signals import post_save
from django.dispatch import receiver

@receiver(post_save, sender=MyModel)
def my_handler(sender, instance, **kwargs):
    print(f"Saved: {instance}")

obj = MyModel()
obj.save()

ASaved: <MyModel object>

BNothing is printed

CError: receiver not connected

DSaved: None

Step-by-Step Solution

Solution:

Step 1: Understand the @receiver decorator
The decorator connects my_handler to post_save signal for MyModel, so it runs after save.
Step 2: Analyze what happens on obj.save()
Saving obj triggers post_save, calling my_handler, which prints the instance representation.
Final Answer:
Saved: <MyModel object> -> Option A
Quick Check:
post_save triggers print with instance [OK]

Quick Trick: post_save calls receiver after save, printing instance [OK]

Common Mistakes:

MISTAKES

Assuming no output without explicit call
Thinking decorator does not connect receiver
Expecting None instead of instance print

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Given this code, what will be printed when a new instance of MyModel is saved?

Step 1: Understand the @receiver decorator

Step 2: Analyze what happens on obj.save()

Final Answer:

Quick Check:

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