Laravel Eloquent persist 1:n - php

Question

I want to create a laravel crud repository for a model. The model has 1 1:n and 1 n:n relationship.
class Product extends Model
{
protected $table = 'products';
protected $fillable = [
'description', 'merchantId', 'name', 'link', 'pictureUrl', 'ean', 'brand', 'aktPrice', 'affiliatePortal', 'programId'
];
public function prices() {
return $this->hasMany(Price::class);
}
public function categories() {
return $this->hasMany(Categorie::class);
}
}
Now I want to create a repository which has a save method and a controller for a restapi, which calls the save methode. My question is how should a save method looks that the entity is saved correctly and which mapping operations have to be done before that it works. I hope someone can help me and send me a save method, or a crud repository for my case and can help me to design the controller.

Answer 1

A Controller, with all the crud operations, look like this:
<?php
namespace App\Http\Controllers;
use App\Models\Room;
use Illuminate\Http\Request;
class RoomController extends Controller
{
public function index()
{
$rooms = Room::all()->toArray();
return $rooms;
}
public function add(Request $request)
{
$room = new Room;
$room->create($request->all());
return response()->json('The room successfully added');
}
public function getById($id)
{
$room = Room::find($id);
return response()->json($room);
}
public function update($id, Request $request)
{
$room = Room::find($id);
$room->update($request->all());
return response()->json('The room successfully updated');
}
public function delete($id)
{
$room = Room::find($id);
$room->delete();
return response()->json('The room successfully deleted');
}
}