Prevent my module controller accesing without user login

Question

How can i allow my controller to work only for logged in users? If non-loggedin user accesses my controller, he should be automatically redirected to login page and after successful login, he reaches my controller. Thanks for answers.

Answer 1

Use predispatch function of your controller:

class Some_Module_IndexController extends Mage_Adminhtml_Controller_Action
{

    public function preDispatch()
    {
        parent::preDispatch();
        if (!Mage::getSingleton('customer/session')->authenticate($this)) {
            $this->setFlag('', self::FLAG_NO_DISPATCH, true);
        }
    }

    // other actions

}

And try to replicate functions which you find them another standard Magento modules. For example Mage_Sales_OrderController uses this function which you asked above.