Add subscription table interaction

We need to track which user subscribed to which list. Unlike User and
List, we don't need to make a Subscription model, this is because this
is a relationship and not an entity of its own.

Implement database interaction with subscription.

Signed-off-by: Mroik <mroik@delayed.space>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/database.rs b/src/database.rs
index de77f95..10a5843 100644
--- a/src/database.rs
+++ b/src/database.rs
@@ -80,5 +80,6 @@ pub trait DBExecutable {
 #[derive(Debug)]
 pub enum QueryResult<T> {
     Empty,
+    Single(T),
     Vec(Vec<T>),
 }