Return union of Django objects
Hi,
Return an union of Django models isn't supported at the moment (strawberry-graphql==0.74.1 and strawberry-graphql-django==0.2.5).
This example will fail:
Contributor = strawberry.union("Contributor", types=(Tenant, ShippingCompany)) @strawberry_django.field
def contributor(self) -> Optional[Contributor]:
return getattr(self.contributor, "shippingcompany", self.contributor)with this error:
The type "<class 'users.models.ShippingCompany'>" cannot be resolved for the field "contributor" , are you using a strawberry.field?
One workaround is to set _type_definition on the retuned type like this:
@strawberry_django.field
def contributor(self) -> Optional[Contributor]:
if hasattr(self.contributor, "shippingcompany"):
self.contributor.shippingcompany._type_definition = ShippingCompany._type_definition
return self.contributor.shippingcompany
self.contributor._type_definition = Tenant._type_definition # type: ignore [attr-defined]
return self.contributorIt would be great if we could return the Django objects directly.
strawberry-graphql / strawberry
A GraphQL library for Python that leverages type annotations 🍓
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