python - How to filter Django objects to accept matches and NULLs? -

i have model has foreignkey field, null=true.

the field-semantics null entry permissive, while non-null entry binds single row in foreign table.

i want build orm filter corresponds to:

select * foo foo.fk_field = ? or foo.fk_field null

(where question mark represents single value in foreign table.)

is possible in django orm, need resort raw query?

from django.db.models import q  foo.objects.filter(q(fk_field=fk_value) | q(fk_field=none))

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