id: implement rocket FromParam

crates/id/src/user.rs

@@ -1,12 +1,13 @@
 use super::Error;
 use nanoid::nanoid;
 use nanoid_dictionary::NOLOOKALIKES;
+use serde::{Deserialize, Serialize};
 use std::fmt::{Display, Formatter};
 use std::str::FromStr;
 
 const LENGTH: usize = 15;
 
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub struct UserID(pub String);
 
 impl Display for UserID {
@@ -21,6 +22,12 @@ impl Default for UserID {
     }
 }
 
+impl AsRef<str> for UserID {
+    fn as_ref(&self) -> &str {
+        self.0.as_ref()
+    }
+}
+
 impl FromStr for UserID {
     type Err = Error;