Install Sail into existing Laravel 8 project

php artisan cache:clear
chmod -R 777 storage/
composer dump-autoload

// replace get()
$products = Product::where('active', 1)->get();

// by paginate()
$products = Product::where('active', 1)->paginate(10);

<!-- use enctype -->
<form  action="/route" method="POST" enctype="multipart/form-data">

$original = [
    'user' => [
        'name' => 'foo',
        'occupation' => 'bar',
    ]
];
 
$dotted = Arr::dot($original);
 
// Results in...
$dotted = [
    'user.name' => 'foo',
    'user.occupation' => 'bar',
];

"repositories": {
        "webdevmatics/jetstream" : {
            "type": "path",
            "url": "C:\\laragon\\www\\codegenerator\\packages/webdevmatics/jetstream"
        }
    }

<button type="submit" id="customers_filter" onclick="checkWhetherTheTableContainsSearchResults()"
                                class="btn filter-button d-inline-block ml-3">
                                Filter
                            </button>
                            
<input id="search-hidden-input" hidden name="searchValue">

<script>
function checkWhetherTheTableContainsSearchResults() {
        let search = location.search.substring(1)
            searchInputElement = document.getElementById('search-hidden-input');
        
        if(search != '') {
            searchInputElement.setAttribute('value', search);
        }
    }
</script>
    
// If the filter is to work on search results, the original search parameter has to be passed into the request array.
        // Thus, the request array will return more than one parameter 
        // AND
        // one of the parameters will be searchValue
        // WHICH
        // will contain the entire search parameter (key + value)

        if ((count($request->all()) > 1) && (isset($request->searchValue))) {
            if (strpos($request->searchValue, '=')) {
                $string = $request->searchValue;
                $array = explode('=', $string);
                $request->searchValue = $array[1];
            }
        }

Route::get('/',closure)

public function store(Request $request)
    {
        $this->validate($request, [
            'name' => 'required|unique:categories',
        ]);

        Category::create([
            'name' => $request->name,
        ]);

 {{ Str::plural('like', $post->likes->count()) }}

// In post model are we are checking whether user has liked it:
// contains is a collection method which allows to look at the inside of the collection
// with collectiong you are looking at a particular key (user_id), and checking if the $user->id is within the collection
// then it will return a true or false
 
// POST MODEL: 
public function likedBy(User $user){
      return $this->likes->contains('user_id', $user->id);
    }

//POSTLIKECONTROLLER
 public function store($id, Request $request){
// this is activating when you press the submit button for like

        $this->middleware(['auth']);


        $post = Post::find($id);

        if ($post->likedBy($request->user())){
            return back(); 
        }
        
        $post->likes()->create([
            'user_id' => $request->user()->id,
        ]);
        return back();

<form action="{{ route('posts.likes', $post->id) }}" type="submit" method='post' >
                  @csrf
                  @method('delete')
                <button  type="submit" class="btn btn-primary btn-sm">Dislike</button>
              </form>

//route
Route::delete('/posts/{id}/likes', [PostLikeController::class, 'destroy'])->name('posts.likes');

   User::create([
           'name' => $request->name,
           'username' => $request->username,
           'email' => $request->email,
           'password' => Hash::make($request->password),

        ]);