insert blogs into DB working

public/index.php

@@ -65,7 +65,6 @@ $app->get('/', function (Request $request, Response $response, array $args) {
 
 $app->map(['GET', 'POST'], '/blog/create', function (Request $request, Response $response, array $args) {
     if (isset($_SESSION['username'])) {
-        global $db;
         if ($request->getMethod() == 'GET') {
             addNavbar($response);
             $response->getBody()->write('<form action="/blog/create" method="POST">');
@@ -73,10 +72,15 @@ $app->map(['GET', 'POST'], '/blog/create', function (Request $request, Response
             $response->getBody()->write('<input type="text" name="slug"/><br/>');
             $response->getBody()->write('<label for="title">Titel:</label>');
             $response->getBody()->write('<input type="text" name="title"/><br/>');
+            $response->getBody()->write('<label for="content">Content:</label>');
+            $response->getBody()->write('<textarea name="content" rows="4" columns="50"></textarea>');
             $response->getBody()->write('<input type="submit"/>');
             addFooter($response);
         } else {
             $data = $request->getParsedBody();
+            global $db;
+            $insertQuery = "INSERT INTO blogs (slug, title, content) VALUES ('" . $data['slug'] . "', '"  . $data['title'] . "', '"  . $data['content'] ."')";
+            $db->exec($insertQuery);
             $_SESSION['blogs'][] = ["slug" => $data['slug'], "title" => $data['title'], "content" => "Lorem ipsum 4"];
             return $response->withHeader('Location', '/')->withStatus(302);
         }