feat: bal and user permission checks

src/entities/book_instance.rs

@@ -11,9 +11,20 @@ pub struct Model {
     pub sold_price: Option<i32>,
     pub status: BookStatus,
     pub book_id: u32,
-    pub owner_id: u32
+    pub owner_id: u32,
+    pub bal_id: u32
+}
+
+impl Entity {
+    pub async fn get_by_id<C>(db_conn: &C, id: u32) -> Option<Model>
+        where C: ConnectionTrait,
+    {
+        match Self::find_by_id(id).one(db_conn).await {
+            Ok(res) => res,
+            Err(_) => None
+        }
+    }
 }
-// Missing: Bal
 
 #[derive(EnumIter, DeriveActiveEnum, PartialEq, Eq ,Deserialize, Serialize, Clone, Copy, Debug, utoipa::ToSchema)]
 #[sea_orm(rs_type = "String", db_type = "String(StringLen::N(1))")]
@@ -40,6 +51,12 @@ pub enum Relation {
         to = "super::owner::Column::Id"
     )]
     Owner,
+    #[sea_orm(
+        belongs_to = "super::bal::Entity",
+        from = "Column::BalId",
+        to = "super::bal::Column::Id"
+    )]
+    Bal,
 }
 
 impl Related<super::book::Entity> for Entity {
@@ -54,4 +71,10 @@ impl Related<super::owner::Entity> for Entity {
     }
 }
 
+impl Related<super::bal::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::Bal.def()
+    }
+}
+
 impl ActiveModelBehavior for ActiveModel {}