private function loadForm(Admin_Form_SchoolEventImage $form)
 {
     $id = (int) $this->_getParam('id', 0);
     $schoolEventId = (int) $this->_getParam('schoolEventId', 0);
     $schoolEventImage = $this->loadSchoolEventImage($id, $schoolEventId);
     $form->populate($schoolEventImage->toArray());
     $form->populate(array('existingFilename' => $schoolEventImage->filename));
     return $form;
 }
 public function init()
 {
     parent::init();
     $element = new Zend_Form_Element_Checkbox('useExisting');
     $element->setRequired(true);
     $element->setValue(1);
     $element->setLabel('Use existing image:');
     $this->useExisting = $element;
     $this->addElement('hidden', 'existingFilename', array('required' => true, 'ignore' => false, 'decorators' => array('ViewHelper')));
 }