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use crate::{impl_scalar, GQLScalar, Result, Value}; use chrono::{DateTime, TimeZone, Utc}; impl GQLScalar for DateTime<Utc> { fn type_name() -> &'static str { "DateTime" } fn parse(value: &Value) -> Option<Self> { match value { Value::String(s) => Some(Utc.datetime_from_str(&s, "%+").ok()?), _ => None, } } fn to_json(&self) -> Result<serde_json::Value> { Ok(self.to_rfc3339().into()) } } impl_scalar!(DateTime<Utc>);