When developing a more or less serious Laravel application in conjunction with Vue, there is always a need to interact with various fields of related tables (entities) using the primary key.
Processing and output of related fields MySQL tables can be implemented in two main ways:
- Merging related tables on the controller side:
On the controller side, you can combine related tables by primary key id and then output the finished collection to client (browser). For example, using Eloquent methods for greedy loading:
$users = User::with('posts')->get();
As a result, we will receive user data along with their posts in a single query, which will reduce loading time and the number of database queries.
Or a leftJoin query of this type :
- Output of separate collections of each entity:
In this approach, we first load individual collections for each entity in the controller and pass them to the client. On the client side, we can go through the object in a loop and match the IDs of related collections to output the necessary fields. For example:
$users = User::all(); $posts = Post::all(); return response()->json(['users' => $users, 'posts' => $posts]);
Then we process the received data on the client:
// Then on the client side , users.forEach(user => { const userPosts = posts.filter(post => post.user_id === user.id); // Output of the required fields of the user and his posts });
Both approaches have their pros and cons:
- Combining data on the controller side:
- Advantages: Reducing the number of database queries and simplifying the client code.
- Disadvantages: Less flexibility when changing requirements and the ability to transfer too much data if there are many related records.
- Output of individual collections:
- Advantages: More flexible data management, the ability to upload only the necessary information.
- Disadvantages: An increase in the number of requests, which may reduce the performance of the application.
The choice of approach depends on the specific context of your application and its requirements. It is recommended to analyze them within the framework of the project and choose the optimal solution, taking into account the performance and convenience of support.