move createBlogs SQL to DB class

public/index.php

@@ -94,14 +94,8 @@ $app->map(['GET', 'POST'], '/blog/create', function (Request $request, Response
         } else {
             $data = $request->getParsedBody();
             global $db;
-            $db->enableExceptions(false);
-            //$sql = "INSERT INTO blogs (slug, title, content) VALUES ('" . $data['slug'] . "', '" . $data['title'] . "', '" . $data['content'] . "')";
-            $stmt = $db->prepare("INSERT INTO blogs (slug, title, content) VALUES (:slug, :title, :content)");
-            $stmt->bindValue(':slug', $data['slug'], SQLITE3_TEXT);
-            $stmt->bindValue(':title', $data['title'], SQLITE3_TEXT);
-            $stmt->bindValue(':content', $data['content'], SQLITE3_TEXT);
-            $res = $stmt->execute();
 
+            $res = $db->createBlog($data);
             if ($res) {
                 return $response->withHeader('Location', '/')->withStatus(302);
             } else {

src/DB.php

@@ -23,4 +23,15 @@ class DB extends SQLite3
             return false;
         }
     }
+
+    public function createBlog($data)
+    {
+        $this->enableExceptions(false);
+        $stmt = $this->prepare("INSERT INTO blogs (slug, title, content) VALUES (:slug, :title, :content)");
+        $stmt->bindValue(':slug', $data['slug'], SQLITE3_TEXT);
+        $stmt->bindValue(':title', $data['title'], SQLITE3_TEXT);
+        $stmt->bindValue(':content', $data['content'], SQLITE3_TEXT);
+        $res = $stmt->execute();
+        return $res;
+    }
 }