3b7ed74d11
- examples to fix still - error_extensions.md ResultExt example does not compile! - trait ErrorExtensions is not implemented for ParseIntError - dataloader - requires sqlx to work. So we either "stub" it OR we rewrite them simpler to use a simple "faux" db library
1.1 KiB
1.1 KiB
OneofObject
A OneofObject
is a special type of InputObject
, in which only one of its fields must be set and is not-null.
It is especially useful when you want a user to be able to choose between several potential input types.
This feature is still an RFC and therefore not yet officially part of the GraphQL spec, but Async-graphql
already supports it!
# extern crate async_graphql;
# #[derive(SimpleObject)]
# struct User { a: i32 }
use async_graphql::*;
#[derive(OneofObject)]
enum UserBy {
Email(String),
RegistrationNumber(i64),
Address(Address)
}
#[derive(InputObject)]
struct Address {
street: String,
house_number: String,
city: String,
zip: String,
}
struct Query {}
#[Object]
impl Query {
async fn search_users(&self, by: Vec<UserBy>) -> Vec<User> {
// ... Searches and returns a list of users ...
# todo!()
}
}
As you can see, a OneofObject
is represented by an enum
in which each variant contains another InputType
. This means that you can use InputObject
as variant too.