Magento image upload form field

Question

I followed this link to make image upload work within my Magento module, but the greatest thing all that code does is passing selected file name via POST: $_FILES a

Answer 1

The trick was to change the default form creation code

$form = new Varien_Data_Form(array(
    'id' => 'edit_form',
    'action' => $this->getUrl('*/*/save', array('id' => $this->getRequest()->getParam('id'))),
    'method' => 'post',
));

to

$form = new Varien_Data_Form(array(
    'id' => 'edit_form',
    'action' => $this->getUrl('*/*/save', array('id' => $this->getRequest()->getParam('id'))),
    'method' => 'post',
    'enctype' => 'multipart/form-data'
));

Not within the code i've provided, but within the caller for that partial (..._Adminhtml_News_Edit_Form instead of ..._Adminhtml_News_Edit_Tab_Form).