36👍
✅
A more direct alternative:
autors = Autor.objects.filter(recolha__categoria=MyCategoria)
where MyCategoria is the relevant CategoriaRecolha instance. Or, if you want to match agains the specific category name, you can extend the query another level:
autors = Autor.objects.filter(recolha__categoria__categoria='my_category_name')
23👍
in django 2 is ForeignKey.limit_choices_to docs
staff_member = models.ForeignKey(
User,
on_delete=models.CASCADE,
limit_choices_to={'is_staff': True},
)
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5👍
cat = CategoriaRecolha.objects.get(field=value)
rows = Recolha.filter(categoria=cat)
autors = [row.autor for row in rows]
The Django Docs explain this pretty well.
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Source:stackexchange.com