Magento 2: How to redirect from Model?

Question

I have below code. I'm overriding Paypal Express 1 function.

magento\app\code\Custom\Module\Model\Api\Nvp.php

namespace Custom\Module\Model\Api;

class Nvp extends \Magento\Paypal\Model\Api\Nvp {

    public function getPaymentAction() {
      // Here need to show error message & redirect to checkout page
      return $this->_getDataOrConfig('payment_action');
    }
}

I have 2 issues. When i create constructor it keeps giving error this object is missing & how to redirect from here?

Don't want to use direct objectManager in Method. Would like to above things

protected $_checkoutSession;

public function __construct(\Magento\Checkout\Model\Session $checkoutSession) {
    $this->_checkoutSession = $checkoutSession;
}

By putting above code it gives below error

Incompatible argument type: Required type: \Magento\Customer\Helper\Address. Actual type: array;

Answer 1

By using these lines in your code you can redirect from Model

$resultRedirect = $this->resultRedirectFactory->create();

return $resultRedirect->setPath('redirect path');