JAVASCRIPT

eager loading

public function format(Book $book)
{
    $book->loadMissing('author');
 
    return [
        'name' => $book->name,
        'author' => $book->author->name,
    ];
}

Eager Loading

const userDetail = await User.findOne({
   where: {     
    email: "testuser@example.co"   
   },
   include: Account
 });