Basic rest implementation for connecting user to sales-person

dao_impl/src/lib.rs

@@ -91,6 +91,18 @@ impl dao::PermissionDao for PermissionDaoImpl {
             .map_db_error()?;
         Ok(())
     }
+    async fn find_user(&self, username: &str) -> Result<Option<dao::UserEntity>, DaoError> {
+        let result = query!(
+            r"SELECT name FROM user WHERE name = ?",
+            username
+        )
+        .fetch_optional(self.pool.as_ref())
+        .await
+        .map_db_error()?;
+        Ok(result.map(|row| dao::UserEntity {
+            name: row.name.clone().into(),
+        }))
+    }
 
     async fn create_role(&self, role: &dao::RoleEntity, process: &str) -> Result<(), DaoError> {
         let name = role.name.as_ref();