Magento2 – URL Redirections and URL Builder

In this blog, we will learn different types of url redirection to be used in magento2. Basically, we use two types of redirection:

1. to previous page
2. to any other URL

Well, let’s start with the first one. To redirect to previous page from my custom action in magento2, we need to add use following block of code in our controller:

namespace Excellence\Hello\Controller\Index;
use Magento\Framework\Controller\ResultFactory;
class Actionname name extends \Magento\Framework\App\Action\Action
{ 
      public function execute()
      {
           $resultRedirect = $this->resultFactory->create(ResultFactory::TYPE_REDIRECT);
           $resultRedirect->setUrl($this->_redirect->getRefererUrl());
           return $resultRedirect;
      }
}

Here, we are first creating instance of ResultFactory by calling create()and then by using it we are redirecting to another URL using setURL() method. In the setUrl() method, we pass the desired URL. Here we wand to redirect the action to previous page, so we are passing $this->_redirect->getRefererUrl() as parameter.

Now, lets move to another type of redirection, in which we need to redirect the custom action to any desired URL. There are several methods to accomplish this task. Here, I’m going to show two simple methods

1. This method is somehow similar to the method explained above. There is a minor change as follows:

namespace Excellence\Hello\Controller\Index;
use Magento\Framework\Controller\ResultFactory;
class Actionname name extends \Magento\Framework\App\Action\Action
{ 
      public function execute()
      {
           $resultRedirect = $this->resultFactory->create(ResultFactory::TYPE_REDIRECT);
           // Your code
           $resultRedirect->setPath('excellence/index/add');
           return $resultRedirect;
      }
}

Here, we have just replaced the method setUrl() by setPath and have passed the URL to which we want to redirect.

2. You may find this method of redirection in several core files of magento too. Its quite simple and less complex than the previous one. Just use following code in your custom action:

return $this->resultRedirectFactory->create()->setPath('excellence/index/add/', ['_current' => true]);

If we use [‘_current’ => true]  then the objects being passed via query string will remain in the redirected URL but if we don’t use [‘_current’ => true] or use [‘_current’ => false], then objects will not be passed in the redirected URL.

URL Builder:

Suppose we want to redirect from a page to another page using anchor tag or similar, then we would need to set the href attribute to the URL to which it needs to redirect the current page. Here we should not use hard code like http://127.0.0.1/magento2/index.php/excellence/index/add/. Magento 2 comes with the concept of URL builder. it builds the actual URL of the controller action which is to be used. We have to just use:

$this->_urlBuilder->getUrl("excellence/index/add/")

If we print it then we will get the URL: http://127.0.0.1/magento2/index.php/excellence/index/add/. This method is somehow similar to classic method Mage::getUrl() of magento 1.

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