diff --git a/README.md b/README.md
index 1b5c135..8338817 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,7 @@ The FridgeBites was developed almost entirely from scratch using PHP, without re
 The website is built entirely from scratch using pure PHP, without relying on any frameworks. This was done as an experimental project to enhance personal skills. Despite this, some libraries were used to add specific functionality:
 
 - [\[PHP\] PHPMailer](https://github.com/PHPMailer/PHPMailer): A library for sending emails, used for password recovery functionality.
+- [\[PHP\] FPHP](https://www.fpdf.org/): library which allows to generate PDF files with pure PHP, that is to say without using the PDFlib library.
 - [\[JS\] Swiper.js](https://github.com/nolimits4web/swiper): A highly customizable library for creating sliders and carousels.
 - [\[JS\] Toastify.js](https://github.com/apvarun/toastify-js): A lightweight library for creating beautiful and customizable toast notifications.
 
diff --git a/apps/Ajax/Controllers/AjaxController.php b/apps/Ajax/Controllers/AjaxController.php
index 6a6f5ab..60ab3b2 100644
--- a/apps/Ajax/Controllers/AjaxController.php
+++ b/apps/Ajax/Controllers/AjaxController.php
@@ -3,6 +3,7 @@
 namespace Lycoreco\Apps\Ajax\Controllers;
 
 use Lycoreco\Includes\BaseController;
+use Lycoreco\Includes\Model\ValidationError;
 
 class AjaxController extends BaseController
 {
@@ -32,8 +33,15 @@ class AjaxController extends BaseController
 
         try {
             $context['result'] = $action();
-        } catch (\Exception $ex) {
+        } 
+        catch (ValidationError $ex) {
+            $context['result'] = get_ajax_error($ex->getMessage(), 400);
+            return $context;
+        }
+        catch (\Exception $ex) {
+            http_response_code(500);
             $context['result'] = get_ajax_error($ex->getMessage());
+            return $context;
         }
 
 
diff --git a/apps/Ajax/Templates/ajax-result.php b/apps/Ajax/Templates/ajax-result.php
index fd5f3ae..4b3fdca 100644
--- a/apps/Ajax/Templates/ajax-result.php
+++ b/apps/Ajax/Templates/ajax-result.php
@@ -1,2 +1,2 @@
 <?php
-echo $context['result'];
\ No newline at end of file
+echo json_encode($context['result'], JSON_PRETTY_PRINT);
\ No newline at end of file
diff --git a/apps/Ajax/ajax-actions.php b/apps/Ajax/ajax-actions.php
index b2ee7cc..1e3f1aa 100644
--- a/apps/Ajax/ajax-actions.php
+++ b/apps/Ajax/ajax-actions.php
@@ -1,6 +1,9 @@
 <?php
 
-use Lycoreco\Apps\Recipes\Models\RecipeModel;
+use Lycoreco\Apps\Recipes\Models\{
+    RecipeModel,
+    RecipeUserMenu
+};
 
 function get_ajax_error($message, $error_code = 500)
 {
@@ -9,13 +12,14 @@ function get_ajax_error($message, $error_code = 500)
     $error = array();
     $error['error'] = $message;
 
-    return json_encode($error, JSON_PRETTY_PRINT);
+    return $error;
 }
 
 /**
  * Ajax actions
  */
-function ajax_search() {
+function ajax_search()
+{
     $search_query = $_POST['query'] ?? null;
     if (!isset($search_query)) {
         return get_ajax_error("Missing 'query' parameter.", 400);
@@ -37,5 +41,59 @@ function ajax_search() {
     $result['count'] = count($recipes);
     $result['result'] = $recipes;
 
-    return json_encode($result, JSON_PRETTY_PRINT);
-}
\ No newline at end of file
+    return $result;
+}
+
+function ajax_usermenu() 
+{
+    $recipe_id = $_POST['recipe_id'] ?? null;
+    $dayofweek = $_POST['dayofweek'] ?? null;
+
+    if (!CURRENT_USER) {
+        return get_ajax_error('You are not authorized', 401);
+    }
+    if (!isset($recipe_id)) {
+        return get_ajax_error("Missing 'recipe_id' parameter.", 400);
+    }
+    if (!isset($dayofweek)) {
+        return get_ajax_error("Missing 'dayofweek' parameter.", 400);
+    }
+    $result = array();
+
+    $user_menu = RecipeUserMenu::get(array(
+        [
+            'name'      => 'obj.recipe_id',
+            'type'      => '=',
+            'value'     => $recipe_id
+        ],
+        [
+            'name'      => 'obj.user_id',
+            'type'      => '=',
+            'value'     => CURRENT_USER->get_id()
+        ]
+    ));
+    // If user choose optiopn 'remove'
+    if($dayofweek == 'remove') {
+        if($user_menu) {
+            $user_menu->delete();
+            $result['success'] = 'This recipe was removed from your list';
+            return $result;
+        }
+        else {
+            return get_ajax_error("This recipe in your menu is not exists", 400);
+        }
+    }
+
+    // If not exists, add new recipe in user menu
+    if(!$user_menu) {
+        $user_menu = new RecipeUserMenu();
+        $user_menu->field_recipe_id = $recipe_id;
+        $user_menu->field_user_id = CURRENT_USER->get_id();
+    }
+
+    $user_menu->field_dayofweek = $dayofweek;
+    $user_menu->save();
+
+    $result['success'] = 'You have successfully added the recipe to your menu.';
+    return $result;
+}
diff --git a/apps/Recipes/Models/RecipeUserMenu.php b/apps/Recipes/Models/RecipeUserMenu.php
new file mode 100644
index 0000000..805a414
--- /dev/null
+++ b/apps/Recipes/Models/RecipeUserMenu.php
@@ -0,0 +1,57 @@
+<?php
+
+namespace Lycoreco\Apps\Recipes\Models;
+
+use Lycoreco\Includes\Model\BaseModel;
+
+class RecipeUserMenu extends BaseModel
+{
+    public $field_dayofweek;
+    public $field_recipe_id;
+    public $field_user_id;
+    public $field_created_at;
+
+    static protected $table_name = 'recipe_usermenu';
+    static protected $table_fields = [
+        'id'            => 'int',
+        'dayofweek'     => 'string',
+        'recipe_id'     => 'int',
+        'user_id'       => 'int',
+        'created_at'    => 'DateTime'
+    ];
+
+    public static function init_table()
+    {
+        $result = db_query('CREATE TABLE ' . static::$table_name . ' (
+            id INT AUTO_INCREMENT PRIMARY KEY,
+
+            dayofweek VARCHAR(150) NOT NULL,
+            recipe_id INT NOT NULL,
+            user_id INT NOT NULL,
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+
+            FOREIGN KEY (recipe_id) REFERENCES recipes(id) ON DELETE CASCADE,
+            FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+        );');
+        return $result;
+    }
+    public function valid()
+    {
+        require_once INCLUDES_PATH . '/Const/recipes.php';
+
+        if(!in_array($this->field_dayofweek, DAYS_OF_WEEK))
+            return ['Day of Week is not valid'];
+
+        $recipe = RecipeModel::get(array(
+            [
+                'name'      => 'obj.id',
+                'type'      => '=',
+                'value'     => $this->field_recipe_id
+            ]
+        ));
+        if(!$recipe)
+            return ['Recipe is not exists'];
+
+        return true;
+    }
+}
\ No newline at end of file
diff --git a/includes/Const/recipes.php b/includes/Const/recipes.php
new file mode 100644
index 0000000..8b971ca
--- /dev/null
+++ b/includes/Const/recipes.php
@@ -0,0 +1,5 @@
+<?php
+
+define('DAYS_OF_WEEK', array(
+    'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday'
+));
\ No newline at end of file