1 files changed, 15 insertions, 6 deletions
diff --git a/src/db/mod.rs b/src/db/mod.rs
index b9c59ef..36d888f 100644
--- a/src/db/mod.rs
+++ b/src/db/mod.rs
@@ -97,24 +97,33 @@ pub enum Error {
 
 pub trait NotFound {
     type Ok;
+    type Error;
+
     fn not_found<E, F>(self, map: F) -> Result<Self::Ok, E>
     where
-        E: From<sqlx::Error>,
+        E: From<Self::Error>,
         F: FnOnce() -> E;
+
+    fn optional(self) -> Result<Option<Self::Ok>, Self::Error>;
 }
 
 impl<T> NotFound for Result<T, sqlx::Error> {
     type Ok = T;
+    type Error = sqlx::Error;
+
+    fn optional(self) -> Result<Option<T>, sqlx::Error> {
+        match self {
+            Ok(value) => Ok(Some(value)),
+            Err(sqlx::Error::RowNotFound) => Ok(None),
+            Err(other) => Err(other),
+        }
+    }
 
     fn not_found<E, F>(self, map: F) -> Result<T, E>
     where
         E: From<sqlx::Error>,
         F: FnOnce() -> E,
     {
-        match self {
-            Err(sqlx::Error::RowNotFound) => Err(map()),
-            Err(other) => Err(other.into()),
-            Ok(value) => Ok(value),
-        }
+        self.optional()?.ok_or_else(map)
     }
 }