[COMMON] Use Product::create($request->all()), $product->update($request->all()) thay $p->save (ok)

C:\xampp\htdocs\test\app\Http\Controllers\ProductController.php

<?php
namespace App\Http\Controllers;
use App\Models\Product;
use Illuminate\Http\Request;
class ProductController extends Controller {
  /**
   * Display a listing of the resource.
   *
   * @return \Illuminate\Http\Response
   */
  public function index() {
    $products = Product::latest()->paginate(2);
    return view('products.index', compact('products'))->with('i', (request()->input('page', 1) - 1) * 2);
  }
  /**
   * Show the form for creating a new resource.
   *
   * @return \Illuminate\Http\Response
   */
  public function create() {
    return view('products.create');
  }
  /**
   * Store a newly created resource in storage.
   *
   * @param  \Illuminate\Http\Request  $request
   * @return \Illuminate\Http\Response
   */
  public function store(Request $request) {
    $request->validate([
      'name'   => 'required',
      'detail' => 'required',
    ]);
    Product::create($request->all());
    return redirect()->route('products.index')->with('success', 'Product created successfully.');
  }
  /**
   * Display the specified resource.
   *
   * @param  \App\Models\Product  $product
   * @return \Illuminate\Http\Response
   */
  public function show(Product $product) {
    return view('products.show', compact('product'));
  }
  /**
   * Show the form for editing the specified resource.
   *
   * @param  \App\Models\Product  $product
   * @return \Illuminate\Http\Response
   */
  public function edit(Product $product) {
    return view('products.edit', compact('product'));
  }
  /**
   * Update the specified resource in storage.
   *
   * @param  \Illuminate\Http\Request  $request
   * @param  \App\Models\Product  $product
   * @return \Illuminate\Http\Response
   */
  public function update(Request $request, Product $product) {
    $request->validate([
      'name'   => 'required',
      'detail' => 'required',
    ]);
    $product->update($request->all());
    return redirect()->route('products.index')->with('success', 'Product updated successfully');
  }
  /**
   * Remove the specified resource from storage.
   *
   * @param  \App\Models\Product  $product
   * @return \Illuminate\Http\Response
   */
  public function destroy(Product $product) {
    $product->delete();
    return redirect()->route('products.index')->with('success', 'Product deleted successfully');
  }
}