m2m_changed signal | Overriding on multiple m2m fields | DRF

[Vibhu Agarwal]

Here is the task I'm trying to do:

Full Code: test_django_project/m2m_change_triggers/models.py

Here's the issue: 2nd test in test_django_project/m2m_change_triggers/tests.py fails while the 1st one passes!

So I did some digging and found that this is happening because of `ModelSerializer` `save()` which is performing `field.set(value)` here: rest_framework/serializers.py#L988-L990

- So how would I solve this issue (so that both the tests pass)?
- Is going with signals the best approach? If not, what are the alternatives?