Transferring data between back-end and front-end in Laravel-Inertia

Hi,

My question in a nutshell: “Is there a third way for transferring data between back-end and front-end except Inertia::render and shared data by HandleInertiaRequests? For just get some data from back-end without reload our Vue page again.”

My question in details: I watched Mr. Korop’s Laravel+Inertia full course in youtube (youtube com/watch?v=swelKdHlvco) and built that CRUD step by step and it worked perfectly. but I just think to myself, let make a really SAP CRUD and put all Create, Edit and Show in the Index page, just for practicing. I mean, a simple posts CRUD all in just 1 page.

So, I moved “create form” at the top of the index and it worked fine when adding new post, without refreshing page. but my problem is “edit page”.

My plan:

1. I click on edit button (an edit form toggle out at top) ->
2. Send post.id to back-end->
3. Return full data (title, full content and writer) to front-end ->
4. full data inserted in the edit form ->
5. after submit edited data send to back-end
6. ...

My problem is in step 3 and 4. in my posts controller:

public function edit(Request $request)
    {
        $post = Post::find($request->id);
        return Inertia::render('Posts/Index', compact('post'));
    }

If I return full data by Inertia::render to front-end so it doesn’t show my index list anymore. If I add "$posts = Post::all();" beside "$post"and send it to front-end it works but as performance view it's wrong because we shouldn't get posts list every time.

The correct way should be: posts list doesn't refresh, and just a post-id sent to back-end, then full post data return and placed in edit form. that's it.

Are there other ways except Inertia::render and "shared data" for sending data between front-end and back-end needless to get all posts from db and send it again to front-end?

What if I want to just reload an edit form part of my page and not all of it?

I have 5 years' experience in php but I'm new at JS and Vue, so sorry if my question is so noob.

Thank you all.