Quick way to test if a User (not OrganisationUser) is a member of Organisation?

[asencis]

As the title suggests, is there a way to test if a User is a member of any Organisation?

[Ben Lopatin]

If you're using the default models, any of the following ought to work:

Organization.objects.filter(users=user).exists()

OrganizationUser.objects.filter(user=user).exists()

user.organization_users.all().exists()  # use the reverse relation