Image upload controller

ProductsController.php

        if ($this->request->is('post')) {
// Start
    if(!empty($this->request->data['image']['name']))
    {
        $fileName = $this->request->data['image']['name'];
        $uploadPath = 'img/uploads/products/';
        $uploadFile = $uploadPath . $fileName;
        if(move_uploaded_file($this->request->data['image']['tmp_name'], $uploadFile))
        {
            // $this->request->data['image'] = $fileName;
            $this->request->data['Product']['image'] = $fileName;
           /* echo $fileName;
            exit();*/
        }
    }
// End
            $product = $this->Products->patchEntity($product, $this->request->data());
            $product->image =  $fileName;
            // $this->request->data['Product']['image'] = $fileName;
            if ($this->Products->save($product)) {
                $this->Flash->success(__('The product has been saved.'));

                return $this->redirect(['action' => 'index']);
            }
            $this->Flash->error(__('The product could not be saved. Please, try again.'));
        }