Function chrono::serde::ts_milliseconds_option::serialize [−][src]
pub fn serialize<S>(
opt: &Option<DateTime<Utc>>,
serializer: S
) -> Result<S::Ok, S::Error> where
S: Serializer,
Serialize a UTC datetime into an integer number of milliseconds since the epoch or none
Intended for use with serde
s serialize_with
attribute.
Example:
use chrono::serde::ts_milliseconds_option::serialize as to_milli_tsopt; #[derive(Serialize)] struct S { #[serde(serialize_with = "to_milli_tsopt")] time: Option<DateTime<Utc>> } let my_s = S { time: Some(Utc.ymd(2018, 5, 17).and_hms_milli(02, 04, 59, 918)), }; let as_string = serde_json::to_string(&my_s)?; assert_eq!(as_string, r#"{"time":1526522699918}"#);