Async-graphql: Does a MergedObject support merging objects with explicit lifetime parameters?

Created on 3 Nov 2020 · 3Comments · Source: async-graphql/async-graphql

I am attempting to create a MergedObject from two objects (a SimpleObject, and an Object) with explicit lifetime parameters; however, this fails to compile with "implicit elided lifetime not allowed here". Removing the #[derive(MergedObject)] will allow the crate to compile. Does this mean that MergedObjects cannot support explicit lifetimes? (I checked the book, but I didn't see this as a restriction of MergedObjects, so I wonder if maybe I am just doing something wrong.)

Some example code:

#[derive(SimpleObject)]
struct ObjectA<'a> {
     field_a: &'a str
}

#[derive(SimpleObject)]
struct ObjectB<'a> {
    field_b: &'a str
}

#[derive(MergedObject)] # fails with "implicit elided lifetime not allowed here"
pub struct Object<'a>(ObjectA<'a>, ObjectB<'a>);

question

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