def changeset(delivery, params \\ %{}) do
delivery
|> cast(params, [:user_id, :object_id])
+ |> validate_required([:user_id, :object_id])
|> foreign_key_constraint(:object_id)
|> foreign_key_constraint(:user_id)
|> unique_constraint(:user_id, name: :deliveries_user_id_object_id_index)
def create(object_id, user_id) do
%Delivery{}
|> changeset(%{user_id: user_id, object_id: object_id})
- |> Repo.insert()
+ |> Repo.insert(on_conflict: :nothing)
end
def get(object_id, user_id) do