New repo method

src/data/repositories.rs

@@ -20,6 +20,7 @@ where
     fn get_mut(&mut self, handle: &mut EntityHandle<T>) -> Option<&mut T>;
     fn handle_by_id(&self, id: Id) -> EntityHandle<T>;
     fn create(&mut self, new: T) -> EntityHandle<T>;
+    fn create_now(&mut self, new: T) -> Result<EntityHandle<T>, NotificationData>;
     fn save(&mut self, entity: &mut EntityHandle<T>) -> MaybeError;
     fn delete(&mut self, handle: EntityHandle<T>) -> MaybeError;
     fn init(&mut self) -> MaybeError;
@@ -317,6 +318,14 @@ impl<T: EntityData + Clone, D: DbLayer<T>> Repository<T, D> for DataRepositoryIn
         entity
     }
 
+    fn create_now(&mut self, mut new: T) -> Result<EntityHandle<T>, NotificationData> {
+        self.data_layer.add_entity(&mut new, &self.connection.read())?;
+        let index = self.cache.len();
+        let handle = EntityHandle::new(new.id(), index, true);
+        self.cache.push(new);
+        Ok(handle)
+    }
+
     fn save(&mut self, entity: &mut EntityHandle<T>) -> MaybeError {
         let original_state = entity.clone();
         if entity.real() {