Add feature(bson-uuid) which will enable Uuid's from the bson crate

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "async-graphql"
-version = "3.0.36"
+version = "3.0.37"
 authors = ["sunli <scott_s829@163.com>", "Koxiaet"]
 edition = "2021"
 description = "A GraphQL server library implemented in Rust"

src/types/external/bson.rs

@@ -2,6 +2,8 @@ use bson::{oid::ObjectId, Bson, Document};
 
 #[cfg(feature = "chrono")]
 use bson::DateTime as UtcDateTime;
+#[cfg(feature = "bson-uuid")]
+use bson::Uuid;
 #[cfg(feature = "chrono")]
 use chrono::{DateTime, Utc};
 
@@ -21,6 +23,21 @@ impl ScalarType for ObjectId {
     }
 }
 
+#[cfg(feature = "bson-uuid")]
+#[Scalar(internal, name = "UUID")]
+impl ScalarType for Uuid {
+    fn parse(value: Value) -> InputValueResult<Self> {
+        match value {
+            Value::String(s) => Ok(Uuid::parse_str(&s)?),
+            _ => Err(InputValueError::expected_type(value)),
+        }
+    }
+
+    fn to_value(&self) -> Value {
+        Value::String(self.to_string())
+    }
+}
+
 #[cfg(feature = "chrono")]
 #[Scalar(internal, name = "DateTime")]
 impl ScalarType for UtcDateTime {