Function activitypub_federation::protocol::helpers::deserialize_one

source ยท 
pub fn deserialize_one<'de, T, D>(deserializer: D) -> Result<[T; 1], D::Error>
where
    T: Deserialize<'de>,
    D: Deserializer<'de>,
Expand description

Deserialize JSON single value or single element array into single value.

Useful if your application can only handle a single value for a field, but another federated platform sends single value wrapped in array. Fails if array contains multiple items.

#[derive(serde::Deserialize)]
struct Note {
    #[serde(deserialize_with = "deserialize_one")]
    to: [Url; 1]
}

let note = serde_json::from_str::<Note>(r#"{"to": ["https://example.com/u/alice"] }"#);
assert!(note.is_ok());