How can I redirect user to the payment gateway after placing order in magento 2?

Question

I am creating my own payment method which should redirect user to the payment gateway of a bank after placing order. How can I do it?

Answer 1

This is the observer code to redirect to that payment gateway.

public function execute(\Magento\Framework\Event\Observer $observer)
{ 
    $orderId = $observer->getEvent()->getOrderIds();
    $base_url = $this->_storeManager->getStore()->getBaseUrl();
    $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
    $order = $objectManager->create('\Magento\Sales\Model\Order') ->load($orderId[0]);
    $payment = $order->getPayment();


    $method = $payment->getMethodInstance();
    $methodTitle = $method->getTitle();

    $order_data= $order->getData();
    $status = $this->checkoutSession->getLastOrderStatus();

      $increment_id = $order_data['increment_id'];
      $redirect = $objectManager->get('\Magento\Framework\App\Response\Http');
      $redirect->setRedirect($base_url.'custompayment/index/redirect/id/'.$increment_id.'');
      return;

}

My Controller having load layout and render layout only please find my phtml file for that controller it'll auto submit and redirect to payment gateway,

<form action="<?php echo $this->getModeurl();?>" id="custom_payment" method="post"> <input type="hidden" name="action" value="pay" /> <input type="hidden" name="currency" value="<?php echo $this->getOrderdetails('order_currency_code');?>" /> <input type="hidden" name="version" value="2.0" /> <input type="hidden" name="item_name_<?php echo $i ?>" value="<?php echo $item['name'] ?>" /> <input type="hidden" name="item_description_<?php echo $i ?>" value="<?php echo $item['description'] ?>" /> <input type="hidden" name="item_quantity_<?php echo $i ?>" value="<?php echo round($item['quantity']) ?>" /> <input type="hidden" name="item_amount_<?php echo $i ?>" value="<?php echo $item['price'] ?>" /> <input type="hidden" name="merchant" value="<?php echo $this->getMerchant();?>" /> <input type="hidden" name="ref_id" value="<?php echo $this->getOrderdetails('increment_id');?>" /> <input type="hidden" name="delivery_charge" value="<?php echo $this->getOrderdetails('shipping_amount');?>" /> <input type="hidden" name="tax_amount" value="<?php echo $this->getOrderdetails('tax_amount');?>" /> <input type="hidden" name="total_amount" value="<?php echo $this->getOrderdetails('grand_total');?>" /> <input type="hidden" name="str_url" value="" /> <input type="hidden" name="success_url" value="http://127.0.0.1/payment/smoovpay/index/response" /> <input type="hidden" name="cancel_url" value="http://YourWebSite" /> <input type="hidden" name="signature" value="<?php echo $this->getSignatureHash();?>"/> <input type="hidden" name="signature_algorithm" value="sha1" /> <h3>Please wait we are redirecting to Smoovpay.....</h3> </form> <script type="text/javascript"> //<![CDATA[ var paymentform = document.getElementById('custom_payment'); window.onload = paymentform.submit(); //]]> </script>