Including FlashMessage Model

app/FlashMessage.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace App;
+
+use Illuminate\Database\Eloquent\Model;
+
+class FlashMessage extends Model
+{
+    const PRIMARY = 'primary';
+    const DANGER = 'danger';
+}

app/Http/Controllers/Auth/RegisterController.php

@@ -8,6 +8,7 @@ use App\Http\Controllers\Controller;
 use Illuminate\Support\Facades\Hash;
 use Illuminate\Support\Facades\Validator;
 use Illuminate\Foundation\Auth\RegistersUsers;
+use App\FlashMessage;
 
 class RegisterController extends Controller
 {
@@ -72,6 +73,8 @@ class RegisterController extends Controller
 
         \Mail::to($user)->send(new Welcome($user));
 
+        session()->flash(FlashMessage::PRIMARY, 'Thanks for registering. Please, do not forget to validate your e-mail address.');
+
         return $user;
     }
 }

app/Http/Controllers/ItemController.php

@@ -5,13 +5,17 @@ namespace App\Http\Controllers;
 use \App\Item;
 use \App\User;
 use Illuminate\Http\Request;
+use App\FlashMessage as flash;
 
 class ItemController extends Controller
 {
     public function show($id)
     {
         $item = Item::find($id);
-        if (!$item || $item->product->user_id != \Auth::id()) return back();
+        if (!$item || $item->product->user_id != \Auth::id()) {
+            session()->flash(flash::DANGER, "The item doesn't exist.");
+            return back();
+        }
         $users = $item->users()->get();
 
         $otherItems = Item::where([['product_id', $item->product_id], ['id', '!=', $id]])->get();
@@ -28,7 +32,7 @@ class ItemController extends Controller
      * Stores the included item into database
      * As the items are included on the Product view,
      * it must return to there after inclusion
-     * 
+     *
      * @return (view) The product view
      */
     public function store(Request $request)
@@ -43,7 +47,7 @@ class ItemController extends Controller
         $authUser = User::loggedIn();
         $authUser->items()->create(['name' => request('item'), 'product_id' => request('product_id')]);
 
-        return redirect('product/'.request('product_id'));
+        return redirect('product/' . request('product_id'));
     }
 
     public function patch(Request $request)
@@ -52,7 +56,7 @@ class ItemController extends Controller
         $item = User::loggedIn()->items()->find(request('item'));
         $item->name = request('name');
         $item->save();
-        return redirect('item/'.request('item'));
+        return redirect('item/' . request('item'));
     }
 
     public function delete(Request $request)
@@ -65,4 +69,4 @@ class ItemController extends Controller
         Item::deleteAndDetach($item);
         return redirect('product/' . $product);
     }
-}
+}

app/Http/Controllers/ProductController.php

@@ -6,6 +6,7 @@ use \App\Item;
 use \App\User;
 use \App\Product;
 use Illuminate\Http\Request;
+use App\FlashMessage as flash;
 
 class ProductController extends Controller
 {
@@ -17,7 +18,7 @@ class ProductController extends Controller
 
     /**
      * Stores the included product into database
-     * 
+     *
      * @return (view) The product view
      */
     public function store(Request $request)
@@ -29,7 +30,7 @@ class ProductController extends Controller
 
     /**
      * Delete a specified Product
-     * 
+     *
      * @param (int) $id The product id
      */
     public function delete(Request $request)
@@ -55,14 +56,14 @@ class ProductController extends Controller
         $product->name = request('name');
         $product->url = request('url');
         $product->save();
-        return redirect('product/'.request('product'));
+        return redirect('product/' . request('product'));
     }
 
     /**
      * Show a specified Product
-     * 
+     *
      * @param (int) $id The product id
-     * 
+     *
      * @return \Illuminate\Http\Response
      */
     public function show($id)
@@ -70,8 +71,8 @@ class ProductController extends Controller
         $product = Product::fromAuthUser()->find($id);
 
         if (!$product) {
-            return back();
-
+            session()->flash(flash::DANGER, "The product doesn't exist or doesn't belongs to you.");
+            return redirect('/product');
         }
         return view('product.show', compact('product'));
     }

resources/views/layouts/app.blade.php

@@ -1,5 +1,6 @@
 <!DOCTYPE html>
 <html lang="{{ str_replace('_', '-', app()->getLocale()) }}">
+
 <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1">
@@ -19,6 +20,7 @@
     <!-- Styles -->
     <link href="{{ asset('css/app.css') }}" rel="stylesheet">
 </head>
+
 <body>
     <div id="app">
         <nav class="navbar navbar-expand-md navbar-light navbar-laravel">
@@ -26,7 +28,8 @@
                 <a class="navbar-brand" href="{{ url('/') }}">
                     {{ config('app.name', 'Laravel') }}
                 </a>
-                <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="{{ __('Toggle navigation') }}">
+                <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
+                    aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="{{ __('Toggle navigation') }}">
                     <span class="navbar-toggler-icon"></span>
                 </button>
 
@@ -40,39 +43,47 @@
                     <ul class="navbar-nav ml-auto">
                         <!-- Authentication Links -->
                         @guest
-                            <li class="nav-item">
-                                <a class="nav-link" href="{{ route('login') }}">{{ __('Login') }}</a>
-                            </li>
-                            <li class="nav-item">
-                                <a class="nav-link" href="{{ route('register') }}">{{ __('Register') }}</a>
-                            </li>
+                        <li class="nav-item">
+                            <a class="nav-link" href="{{ route('login') }}">{{ __('Login') }}</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link" href="{{ route('register') }}">{{ __('Register') }}</a>
+                        </li>
                         @else
-                            <li class="nav-item dropdown">
-                                <a id="navbarDropdown" class="nav-link dropdown-toggle" href="#" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" v-pre>
-                                    {{ Auth::user()->name }} <span class="caret"></span>
+                        <li class="nav-item dropdown">
+                            <a id="navbarDropdown" class="nav-link dropdown-toggle" href="#" role="button" data-toggle="dropdown"
+                                aria-haspopup="true" aria-expanded="false" v-pre>
+                                {{ Auth::user()->name }} <span class="caret"></span>
+                            </a>
+
+                            <div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdown">
+                                <a class="dropdown-item" href="{{ route('logout') }}" onclick="event.preventDefault();
+                                                     document.getElementById('logout-form').submit();">
+                                    {{ __('Logout') }}
                                 </a>
 
-                                <div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdown">
-                                    <a class="dropdown-item" href="{{ route('logout') }}"
-                                       onclick="event.preventDefault();
-                                                     document.getElementById('logout-form').submit();">
-                                        {{ __('Logout') }}
-                                    </a>
-
-                                    <form id="logout-form" action="{{ route('logout') }}" method="POST" style="display: none;">
-                                        @csrf
-                                    </form>
-                                </div>
-                            </li>
+                                <form id="logout-form" action="{{ route('logout') }}" method="POST" style="display: none;">
+                                    @csrf
+                                </form>
+                            </div>
+                        </li>
                         @endguest
                     </ul>
                 </div>
             </div>
         </nav>
 
+        @if ($flashMsg = session('primary'))
+        <div class="alert alert-primary text-center" role="alert">{{ $flashMsg }}</div>
+        @endif
+        @if ($flashMsg = session('danger'))
+        <div class="alert alert-danger text-center" role="alert">{{ $flashMsg }}</div>
+        @endif
+
         <main class="py-4">
             @yield('content')
         </main>
     </div>
 </body>
-</html>
+
+</html>

routes/web.php

@@ -15,7 +15,7 @@ Route::get('/', function () {
     return view('welcome');
 });
 
-Route::get('/product', 'ProductController@index')->middleware('auth');
+Route::get('/product', 'ProductController@index')->middleware('verified');
 Route::get('/product/{product}', 'ProductController@show')->middleware('verified');
 Route::post('/product', 'ProductController@store')->middleware('verified');
 Route::patch('/product', 'ProductController@patch')->middleware('verified');
@@ -41,4 +41,4 @@ Auth::routes(['verify' => true]);
 Route::get('/home', 'HomeController@index')->name('home')->middleware('auth');
 Route::get('/help', function () {
     return view('help');
-});
+});