Using `Union` and `OneofObject` on the same struct

[ClementNerma]

Hi!

I found out that you can't use both Union and OneofObject derives on the same struct. Is there something I'm missing (like some kind of additional attribute or impl) or is that plainly impossible right now?

It'd be immensely useful for this to work, just like you can put both SimpleObject and InputObject on the same struct.

Thanks in advance for your help!

EDIT: Here are the error messages I'm getting

thread 'main' panicked at 'Register `AppVolumeTypeGraphQL` as `InputObject`, but it is already registered as `Union`', /home/clement/.cargo/registry/src/github.com-1ecc6299db9ec823/async-graphql-4.0.15/src/registry/mod.rs:673:25

And if I add a #[graphql(input_name = "xxx")] after the derive attributes:

Unknown field: `input_name`
[...]
= note: this error originates in the macro `graphql_enum` (in Nightly builds, run with -Z macro-backtrace for more info)

[sunli829]

Fixed in master branch

async-graphql/tests/union.rs

Line 445 in 7f70c7e

pub async fn test_union_with_oneof_object() {

[ClementNerma]

Thanks a lot!

But when I try to use the git repository, I get the following compilation error (seems to come from your crate):

error[E0277]: the trait bound `std::string::String: From<async_graphql::request::Request>` is not satisfied
   --> src/server/graphql.rs:13:20
    |
13  |     schema.execute(req.into_inner()).await.into()
    |            ------- ^^^^^^^^^^^^^^^^ the trait `From<async_graphql::request::Request>` is not implemented for `std::string::String`
    |            |
    |            required by a bound introduced by this call
    |
    = help: the following other types implement trait `From<T>`:
              <&'a str as From<mime::Name<'a>>>
              <&'t str as From<regex::Match<'t>>>
              <std::string::String as From<&mut str>>
              <std::string::String as From<&std::string::String>>
              <std::string::String as From<&str>>
              <std::string::String as From<Box<str>>>
              <std::string::String as From<Cow<'a, str>>>
              <std::string::String as From<ID>>
            and 5 others
    = note: required because of the requirements on the impl of `Into<std::string::String>` for `async_graphql::request::Request`
    = note: required because of the requirements on the impl of `From<async_graphql::request::Request>` for `async_graphql::Request`
    = note: 1 redundant requirement hidden
    = note: required because of the requirements on the impl of `Into<async_graphql::Request>` for `async_graphql::request::Request`
note: required by a bound in `async_graphql::Schema::<Query, Mutation, Subscription>::execute`
   --> /home/clement/.cargo/git/checkouts/async-graphql-d678bd03dd5a34ec/7f70c7e/src/schema.rs:658:47
    |
658 |     pub async fn execute(&self, request: impl Into<Request>) -> Response {
    |                                               ^^^^^^^^^^^^^ required by this bound in `async_graphql::Schema::<Query, Mutation, Subscription>::execute`

error[E0277]: the trait bound `GraphQLResponse: From<async_graphql::Response>` is not satisfied
  --> src/server/graphql.rs:13:44
   |
13 |     schema.execute(req.into_inner()).await.into()
   |                                            ^^^^ the trait `From<async_graphql::Response>` is not implemented for `GraphQLResponse`
   |
   = help: the following other types implement trait `From<T>`:
             <GraphQLResponse as From<async_graphql::response::BatchResponse>>
             <GraphQLResponse as From<async_graphql::response::Response>>
   = note: required because of the requirements on the impl of `Into<GraphQLResponse>` for `async_graphql::Response`

For more information about this error, try `rustc --explain E0277`.
error: could not compile `onix-server` due to 2 previous errors

EDIT: I'm on latest stable if that can be of any use, but this doesn't seem like using nightly would solve the problem.

[sunli829]

You should to use the same version:

async-graphql = { git="..." }

# async-graphql-poem = "1.0.0"  <<<<  change to the line below
async-graphql-poem = { git="..." }

[ClementNerma]

Indeed, this makes it work! Thanks a lot for your help 🙏