Adding custom field in prices tab in backend

Question

I want to create a custom field called Price1. I tried this code.

$fieldset->addField('Price1','text', array(
                'name'=>'Price1',
                'class'=>$attribute->getIsRequired()?'required-entry':'',
                'lable'=>Mage::helper('catalog')->_('Price1'),
                'title'=>Mage::helper('catalog')->_('Price1'),
                ));

And I got this error.

Fatal error: Call to a member function getIsRequired() on a non-object in C:\wamp\www\multiplecurrencies\app\code\core\Mage\Adminhtml\Block\Catalog\Product\Edit\Tab\Attributes.php on line 71

What am I missing?

Answer 1

If you want to add an attribute to the product add/edit page you shouldn't add it by code.
Create the attribute in Catalog->Attributes->Manage attributes, then go to Catalog->Attributes->Manage attribute sets edit each attribute set and add the attribute by drag and drop in the group called 'Prices'.