Derive Macro async_graphql::Enum

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

Define a GraphQL enum

See also the Book.

Macro parameters

Attribute	description	Type	Optional
name	Enum name	string	Y
desc	Enum description	string	Y

Item parameters

Attribute	description	Type	Optional
name	Item name	string	Y
desc	Item description	string	Y
deprecation	Item deprecation reason	string	Y

Examples

use async_graphql::*;

#[derive(Enum, Copy, Clone, Eq, PartialEq)]
enum MyEnum {
    A,
    #[item(name = "b")] B,
}

struct QueryRoot {
    value1: MyEnum,
    value2: MyEnum,
}

#[Object]
impl QueryRoot {
    #[field(desc = "value")]
    async fn value1(&self) -> MyEnum {
        self.value1
    }

    #[field(desc = "value")]
    async fn value2(&self) -> MyEnum {
        self.value2
    }
}

async_std::task::block_on(async move {
    let schema = Schema::new(QueryRoot{ value1: MyEnum::A, value2: MyEnum::B }, EmptyMutation, EmptySubscription);
    let res = schema.execute("{ value1 value2 }").await.into_result().unwrap().data;
    assert_eq!(res, serde_json::json!({ "value1": "A", "value2": "b" }));
});