Question

How do I define the target for _addButton? Below is the code I am using. I read the Magento docs located here but they didn’t have this info: http://docs.magentocommerce.com/Mage_Adminhtml/Mage_Adminhtml_Block_Widget_Container.html#method_addButton

 $this->_addButton('rebuild_files', array(
    'label'     => Mage::helper('core')->__('Rebuild Special Cache'),
    'onclick'   => 'setLocation(\'http://mysite.com/page/\')',
    'class'     => 'rebuild',
)); 

Answer 1

Setting a target is not possible because a container’s buttons are not inside a form, and it is the form’s target that makes a difference. Furthermore that button doesn’t trigger any form but uses javascript to direct the browser (hence the setLocation bit). Magento admin has a convenience function for what you want called popWin, it is shorthand for Window.open so the second parameter is the target window name.

$this->addButton('rebuild_files', array(
    'label'     => Mage::helper('core')->__('Rebuild Special Cache'),
    'onclick'   => 'popWin("http://mysite.com/page/", "_blank")',
    'class'     => 'rebuild',
));

---

PS. _addButton is a protected method. It is better to use the public addButton in case another developer should attempt to change it’s behaviour.