What's best practice to check if an object is part of a ManyToMany relationship in Django

Question

from an instance of Site with a ManyToMany relationship to Kiosk, i'd like to check if a Kiosk object is part of the relationship.

I could do

self.apps.get(id=app_id).exists() and check if True

or

self.apps.get(id=app_id) and catch the ObjectDoesNotExist error

or

self.apps.filter(id=app_id) and check if True

• If I have to catch a possible ObjectDoesNotExist error, I may as well use the second one
• I can do the second but doesnt seem super clean
• can use the third one but using filter on a unique ID seems wrong to me

You can tell me to use whatever works and that'll be a valid answer ;-)

Answer 1

I would use

self.apps.filter(id=app_id).exists()

What's wrong with that?