Function from_value

pub fn from_value<'a, T>(value: &'a Value) -> Result<T, Error>
where
    T: Deserialize<'a>,

Deserialize an instance of type T from a Firestore Value.

Examples

#[derive(Debug, PartialEq, serde::Deserialize)]
struct T {
    b: bool,
    n: i64,
}
assert_eq!(
    from_value::<'_, T>(&Value {
        value_type: Some(ValueType::MapValue(MapValue {
            fields: std::collections::HashMap::from([
                (
                    "b".to_string(),
                    Value {
                        value_type: Some(ValueType::BooleanValue(true))
                    }
                ),
                (
                    "n".to_string(),
                    Value {
                        value_type: Some(ValueType::IntegerValue(1))
                    }
                )
            ])
        }))
    })?,
    T { b: true, n: 1 }
);

Deserialize GeoPoint, Reference, and Timestamp

See: with.

Mapping table (no type hint)

Firestore Value	serde data model
nullValue	unit
booleanValue	bool
integerValue	i64
doubleValue	f64
timestampValue	map ({ "seconds": i64, "nanos": i64 })
stringValue	string
bytesValue	bytes
referenceValue	string
geoPointValue	map ({ "latitude": f64, "longitude": f64 })
arrayValue	seq
mapValue	map