FIX Customer cannot login to magento 1.8.1

FIX Customer cannot login to magento 1.8.1

The issue is raising because the custom login form does not contain any form_key and there is a form key validation happening in loginPostAction of magento.

Here is the solution:

1 – Go to template/customer/form/login.phtml and template/persistent/customer/form/login.phtml and under

<ul class="form-list">

add the following code in the login form

<input type="hidden" name="form_key" value="<?php echo Mage::getSingleton('core/session')->getFormKey(); ?>" />

Or

<?php echo $this->getBlockHtml('formkey'); ?>

Go to template/customer/form/login.phtml and template/persistent/customer/form/login.phtml and under

1 add the following code in the login form

1 getFormKey(); ?>" /> 2 – Or if you are using the login form in several places with different template files

Copy app/code/core/Mage/Customer/controllers/AccountController.php to app/code/local/Mage/Customer/controllers/AccountController.php

Open the AccountController.php that you have copied to local and add the following code to line 139 just after the opening of loginPostAction()

// generate form_key if missing or invalid

<?php

if (!($formKey = $this->getRequest()->getParam('form_key', null)) || $formKey != Mage::getSingleton('core/session')->getFormKey()) {

$this->getRequest()->setParams(array('form_key' =>Mage::getSingleton('core/session')->getFormKey()));

}

?>