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use crate::{InputValueError, InputValueResult, ScalarType, Value}; use async_graphql_derive::Scalar; use chrono::{DateTime, Utc}; /// Implement the DateTime<Utc> scalar /// /// The input/output is a string in RFC3339 format. #[Scalar(internal, name = "DateTimeUtc")] impl ScalarType for DateTime<Utc> { fn parse(value: Value) -> InputValueResult<Self> { match &value { Value::String(s) => Ok(s.parse::<DateTime<Utc>>()?), _ => Err(InputValueError::ExpectedType(value)), } } fn to_value(&self) -> Value { Value::String(self.to_rfc3339()) } }