Add Button at Magento Admin

Question

I have a custom module for generate random keys. The concept is when admin clicks the add new button it will automatically creates the random codes, at the time of editing i have removed all buttons and added extra field button to send mail. Upto this i have no problem, but at the time of clicking send mail button i am facing problem,

I have written some scripts for onclick event, Edit/Tab/Form.php:

$fieldset->addField('promo_email', 'text', array(
                            'label' => Mage::helper('promogenerator')->__('Send Mail'),
                            'name'  => 'promo_email',
                            'after_element_html' => '<button type="button" onclick="sendmail()">Send Mail</button>' 
                        ));

I have written the scripts at, Edit.php:

$this->_formScripts[] = "

    function sendmail(){
        var email = jQuery('#promo_email').val(),
        code = jQuery('#promocode').val();
        window.location.href = '{$this->getUrl(`*/*/send`, array(`id` => $this->getRequest()->getParam(`id`)))}';
    }
";

the problem is in url, the script function not redirect me to the send url, it redirects me to the index page.

I really don't know how to give the url in scripts. Can someone point me the correct solution.

Answer 1

Instead of $this->getUrl try using

Mage::helper('adminhtml')->getUrl(....);

[EDIT]
Change your formScripts to this

$this->_formScripts[] = "

    function sendmail(){
        var email = jQuery('#promo_email').val(),
        code = jQuery('#promocode').val();
        window.location.href = '".$this->getUrl(`*/*/send`, array(`id` => $this->getRequest()->getParam(`id`)))."';
    }
";