Delete return pages

exam/classes/Models/Post/Post.php

@@ -165,14 +165,23 @@ class Post implements JsonSerializable
     return Post::getByID($this->id);
   }
 
-  public function delete(): Post
+  public function delete(int $limit): array
   {
     $db = Database::getInstance();
     $stmt = $db->prepare("DELETE FROM egb_gaestebuch WHERE id = :ID");
     $stmt->bindValue(":ID", $this->id);
     $stmt->execute();
 
-    return $this;
+    $stmt = $db->prepare(
+      "SELECT
+        COUNT(*)
+      FROM
+        egb_gaestebuch"
+    );
+    $stmt->execute();
+    $count = $stmt->fetch(PDO::FETCH_COLUMN, 0);
+
+    return ["pages" => intdiv($count, $limit + 1) + 1, "data" => $this];
   }
 
   /*