Is there a reliable way in magento to redirect to the last page.
I have a small form that i want to redirect to the previous page if an error occurred.
The form sits on the product page and redirects to another page when completed successfully. However, I would like to redirect back to the product page if an error occurred.
My action url is /my/module/submit
Also when i say reliable, i mean that redirectReferer cant be relied on
Magento relies on the $_SERVER['HTTP_REFERER'] value for redirect logic without qualm; see Mage_Core_Controller_Varien_Action:
/**
* Set referer url for redirect in responce
*
* @param string $defaultUrl
* @return Mage_Core_Controller_Varien_Action
*/
protected function _redirectReferer($defaultUrl=null)
{
$refererUrl = $this->_getRefererUrl();
if (empty($refererUrl)) {
$refererUrl = empty($defaultUrl) ? Mage::getBaseUrl() : $defaultUrl;
}
$this->getResponse()->setRedirect($refererUrl);
return $this;
}
/**
* Identify referer url via all accepted methods (HTTP_REFERER, regular or base64-encoded request param)
*
* @return string
*/
protected function _getRefererUrl()
{
$refererUrl = $this->getRequest()->getServer('HTTP_REFERER');
if ($url = $this->getRequest()->getParam(self::PARAM_NAME_REFERER_URL)) {
$refererUrl = $url;
}
if ($url = $this->getRequest()->getParam(self::PARAM_NAME_BASE64_URL)) {
$refererUrl = Mage::helper('core')->urlDecode($url);
}
if ($url = $this->getRequest()->getParam(self::PARAM_NAME_URL_ENCODED)) {
$refererUrl = Mage::helper('core')->urlDecode($url);
}
if (!$this->_isUrlInternal($refererUrl)) {
$refererUrl = Mage::app()->getStore()->getBaseUrl();
}
return $refererUrl;
}
If you aren't content to rely on the $_SERVER['HTTP_REFERER'], the only thing which you can do is store the most recently-visited URL in session and create a getter for this value which handles the case when someone navigates directly to the site.
