Struct serde_with::json::JsonString

pub struct JsonString;

Serialize value as string containing JSON

The same functionality is also available as serde_with::json::nested compatible with serde’s with-annotation.

Examples

#[serde_as]
#[derive(Deserialize, Serialize)]
struct A {
    #[serde_as(as = "JsonString")]
    other_struct: B,
}
#[derive(Deserialize, Serialize)]
struct B {
    value: usize,
}

let v: A = serde_json::from_str(r#"{"other_struct":"{\"value\":5}"}"#).unwrap();
assert_eq!(5, v.other_struct.value);

let x = A {
    other_struct: B { value: 10 },
};
assert_eq!(
    r#"{"other_struct":"{\"value\":10}"}"#,
    serde_json::to_string(&x).unwrap()
);

Trait Implementations

impl Clone for JsonString

fn clone(&self) -> JsonString

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for JsonString

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for JsonString

fn default() -> JsonString

Returns the “default value” for a type.

impl<'de, T> DeserializeAs<'de, T> for JsonString where
    T: DeserializeOwned, 

fn deserialize_as<D>(deserializer: D) -> Result<T, D::Error> where
    D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl<T> SerializeAs<T> for JsonString where
    T: Serialize, 

fn serialize_as<S>(source: &T, serializer: S) -> Result<S::Ok, S::Error> where
    S: Serializer, 

Serialize this value into the given Serde serializer.

impl Copy for JsonString