Function find_one_to_one

examples/basic/src/select.rs:70–90

(db: &DbConn)

}

async fn find_one_to_one(db: &DbConn) -> Result<(), DbErr> {
    print!("find fruits and cakes: ");

    let fruits_and_cakes: Vec<(fruit::Model, Option<cake::Model>)> =
        Fruit::find().find_also_related(Cake).all(db).await?;

    println!("with loader: ");
    let fruits: Vec<fruit::Model> = Fruit::find().all(db).await?;
    let cakes: Vec<Option<cake::Model>> = fruits.load_one(Cake, db).await?;

    println!();
    for (left, right) in fruits_and_cakes
        .into_iter()
        .zip(fruits.into_iter().zip(cakes.into_iter()))
    {
        println!("{left:?}");
        assert_eq!(left, right);
    }

    Ok(())
}

async fn find_one_to_many(db: &DbConn) -> Result<(), DbErr> {
    print!("find cakes with fruits: ");