PHP 8.2 - Difficulty with Lazy Loading and Eager Loading in Doctrine ORM
I'm stuck on something that should probably be simple. I'm attempting to set up I've searched everywhere and can't find a clear answer. I've looked through the documentation and I'm still confused about I'm using PHP 8.2 with Doctrine ORM in my Symfony 6 application, and I'm working with issues with performance related to lazy loading versus eager loading. I have a one-to-many relationship between `User` and `Post` entities. When I try to fetch a user and their posts, the application executes multiple queries due to lazy loading, which is really affecting performance. Here’s the code I have: ```php $user = $entityManager->getRepository(User::class)->find($userId); $posts = $user->getPosts(); // This triggers additional queries ``` I tried using eager loading by modifying my query like this: ```php $query = $entityManager->createQueryBuilder() ->select('u, p') ->from(User::class, 'u') ->leftJoin('u.posts', 'p') ->where('u.id = :id') ->setParameter('id', $userId) ->getQuery(); $user = $query->getSingleResult(); ``` However, I still feel like I'm not getting the most efficient query. The generated SQL is fetching all posts regardless of whether they are needed, which is also causing a performance hit when there are a lot of posts. Is there a recommended approach or best practice for deciding between lazy loading and eager loading in this scenario? How can I optimize my queries to prevent unnecessary data fetching while still maintaining performance? I’d appreciate any advice or examples, especially if there are common pitfalls to avoid. Am I missing something obvious? What's the best practice here? Is there a simpler solution I'm overlooking? This is for a CLI tool running on Debian. I'm working with Php in a Docker container on Windows 11. My team is using Php for this application. Am I approaching this the right way?