Optimize request

src/helpers/account_helper.rs

@@ -70,7 +70,8 @@ pub fn get_user_by_login_token(token: &str, client: &APIClient) -> ResultBoxErro
     database::query_row(
         QueryInfo::new(USER_ACCESS_TOKENS_TABLE)
             .cond_u32("service_id", client.id)
-            .cond("token1", token),
+            .cond("token1", token)
+            .add_field("user_id"),
         |res| res.get_int64("user_id"),
     )
 }

src/helpers/database.rs

@@ -60,6 +60,8 @@ pub struct QueryInfo {
     pub limit: u64,
 
     /// Queried arguments
+    ///
+    /// If this attribute is empty, all the columns of the table set are fetched
     pub fields: Vec<String>,
 }
 
@@ -88,6 +90,12 @@ impl QueryInfo {
         self.conditions.insert(key.to_string(), val.to_string());
         self
     }
+
+    /// Append a field to the list of selected fields
+    pub fn add_field(mut self, key: &str) -> QueryInfo {
+        self.fields.push(key.to_string());
+        self
+    }
 }
 
 /// Struct used to read the result of a request