error and success messages

composer.json

@@ -8,7 +8,8 @@
         "slim/http": "^1.3",
         "slim/php-view": "^3.2",
         "php-di/php-di": "^7.0",
-        "nesbot/carbon": "^3.5"
+        "nesbot/carbon": "^3.5",
+        "slim/flash": "^0.4.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^10.5",

public/index.php

@@ -8,26 +8,34 @@
 
 require __DIR__ . '/../vendor/autoload.php';
 
+session_start();
+
 $container = new Container();
 $container->set('renderer', function () {
     return new \Slim\Views\PhpRenderer(__DIR__ . '/../view');
 });
+$container->set('flash', function () {
+    return new \Slim\Flash\Messages();
+});
 
 $app = AppFactory::createFromContainer($container);
 $app->addErrorMiddleware(true, true, true);
 $app->add(MethodOverrideMiddleware::class);
 $router = $app->getRouteCollector()->getRouteParser();
 
 $app->get('/', function ($request, $response) {
+    $messages = $this->get('flash')->getMessages();
     return $this->get('renderer')->render($response, 'index.phtml');
 });
 
 $app->get('/urls/{id}', function ($request, $response, $args) {
+    $messages = $this->get('flash')->getMessages();
     $id = $args['id'];
     $engine = new Engine('urls', 'find', $id);
     $url = $engine->process();
     $params = [
         'url' => $url,
+        'flash' => $messages
     ];
     return $this->get('renderer')->render($response, 'url.phtml', $params);
 });
@@ -45,12 +53,15 @@
     $validator = new Validator();
     $url = $request->getParsedBodyParam('url');
     $errors = $validator->validate($url);
+    if (count($errors) === 0) {
         $engine = new Engine('urls', 'insert', $url['name']);
         $insertedId = $engine->process();
+        $this->get('flash')->addMessage('success', 'Страница успешно добавлена');
         return $response->withRedirect("/urls/{$insertedId}", 302);
+    }
     $params = [
         'url' => $url,
-        'errors' => $errors
+        'errors' => 5
     ];
     return $this->get('renderer')->render($response, "index.phtml", $params);
 });

src/Validator.php

@@ -7,6 +7,7 @@ class Validator
     public function validate(array $url): array
     {
         $errors = [];
+        return [];
         if (strlen($url['name']) > 255) {
             $errors['strlen'] = "Url must be less than 256 characters";
         } elseif (!filter_var($url['name'], FILTER_VALIDATE_URL)) {

view/index.phtml

@@ -37,7 +37,14 @@
                     <p class="fs-5 fw-light">Бесплатно проверяйте сайты на SEO пригодность</p>
                     <form action="/urls" class="row mb-3" method="post">
                         <div class="col-8">
-                            <input type="text" name='url[name]' class="form-control form-control-lg" placeholder="https://www.example.com">
+                            <?php if (!$errors == null) : ?>
+                                <input type="text" name='url[name]' id="validationServer03" class="form-control is-invalid form-control-lg" placeholder="https://www.example.com" aria-describedby="validationServer03Feedback">
+                                <div id="validationServer03Feedback" class="invalid-feedback">
+                                    Некорректный URL
+                                </div>
+                            <?php else : ?>
+                                <input type="text" name='url[name]' id="validationServer03" class="form-control form-control-lg" placeholder="https://www.example.com" aria-describedby="validationServer03Feedback">
+                            <?php endif ?>
                         </div>
                         <div class="col">
                             <input  type="submit" class="btn btn-lg btn-primary ms-3 mx-3 px-5" value="Проверить">

view/url.phtml

@@ -30,8 +30,17 @@
         </nav>
     </header>
     <main class="flex-grow-1">
+    <?php if (!$flash == null) : ?>
+        <?php foreach ($flash as $messages) : ?>
+            <?php foreach ($messages as $message) : ?>
+                <div class="alert alert-success" role="alert">
+                    <?= htmlspecialchars($message)?>
+                </div>
+            <?php endforeach ?>
+        <?php endforeach?>
+    <?php endif ?>
         <div class="container-lg">
-            <h1 class="mt-3">Сайт <?= htmlspecialchars($url['name'])?></h1>
+            <h1 class="mt-3">Сайт: <?= htmlspecialchars($url['name'])?></h1>
             <div class="row">
                 <div class="col">
                     <table class="table table-bordered table-responsive text-nowrap table-hover">