Derive Macro MergedObject

#[derive(MergedObject)]
{
    // Attributes available to this derive:
    #[graphql]
}

Define a merged object with multiple object types.

See also the Book.

Macro attributes

Attribute	description	Type	Optional
name	Object name	string	Y
name_type	If true, the object name will be specified from async_graphql::TypeName trait	bool	Y
cache_control	Object cache control	CacheControl	Y
extends	Add fields to an entity that’s defined in another service	bool	Y
visible	If false, it will not be displayed in introspection. See also the Book.	bool	Y
visible	Call the specified function. If the return value is false, it will not be displayed in introspection.	string	Y
serial	Resolve each field sequentially.	bool	Y
inaccessible	Indicate that an object is not accessible from a supergraph when using Apollo Federation	bool	Y
tag	Arbitrary string metadata that will be propagated to the supergraph when using Apollo Federation. This attribute is repeatable	string	Y
directives	Directives	expr	Y

Examples

use async_graphql::*;

#[derive(SimpleObject)]
 struct Object1 {
    a: i32,
 }

#[derive(SimpleObject)]
struct Object2 {
    b: i32,
}

#[derive(SimpleObject)]
struct Object3 {
    c: i32,
}

#[derive(MergedObject)]
struct MyObj(Object1, Object2, Object3);

let obj = MyObj(Object1 { a: 10 }, Object2 { b: 20 }, Object3 { c: 30 });