How to sanitize request in a magento 2 controller?

 How to sanitize request in a magento 2 controller?

To sanitize request data in a Magento 2 controller, you can use the built-in filtering system. Here's a simple example of how to do it:

1. First, let's make sure we are in the correct file. In your Magento 2 module, go to the Controller folder and find the PHP file that handles the request you want to sanitize.

2. Next, add the \Magento\Framework\Data\Form\FormKey\Validator class and the \Magento\Framework\App\Request\DataPersistorInterface class to the constructor of your controller class. This will allow you to validate the form key and persist data across requests.

Here's an example of what your constructor might look like:

public function __construct(
    \Magento\Framework\App\Action\Context $context,
    \Magento\Framework\Data\Form\FormKey\Validator $formKeyValidator,
    \Magento\Framework\App\Request\DataPersistorInterface $dataPersistor
) {
    $this->formKeyValidator = $formKeyValidator;
    $this->dataPersistor = $dataPersistor;
    parent::__construct($context);
}

3. Now, in the execute() method of your controller class, you can use the $this->formKeyValidator->validate($this->getRequest()) method to validate the form key. This helps prevent CSRF attacks.

4. To sanitize the request data, use the getParam() method from the $this->getRequest() object. For example, if you have a 'name' field in your form, you can sanitize it like this:

$name = $this->getRequest()->getParam('name', null);

5. If you need more advanced filtering, you can use the \Magento\Framework\Filter\InputFilter class to apply different filters to your request data.

Remember, always validate and sanitize user input to ensure the security and integrity of your Magento 2 application.

Do you have any questions about these steps or any specific filtering needs?