public function init()
 {
     parent::init();
     $role_mapper = new Application_Model_RoleMapper();
     $roles = $role_mapper->fetchAll();
     $resource_mapper = new Application_Model_ResourceMapper();
     $resources = $resource_mapper->fetchAll();
     $privilege_mapper = new Application_Model_PrivilegeMapper();
     $privileges = $privilege_mapper->fetchAll();
     $multi_options = array('' => 'Select option');
     if ($roles) {
         foreach ($roles as $row) {
             $multi_options[$row->getId()] = $row->getRole();
         }
     }
     $this->addElement('select', 'role_id', array('required' => true, 'label' => 'Role:', 'MultiOptions' => $multi_options));
     $multi_options = array('' => 'Select option');
     if ($resources) {
         foreach ($resources as $row) {
             $multi_options[$row->getId()] = $row->getResource();
         }
     }
     $this->addElement('select', 'resource_id', array('label' => 'Resource:', 'MultiOptions' => $multi_options));
     $multi_options = array('' => 'Select option');
     if ($privileges) {
         foreach ($privileges as $row) {
             $multi_options[$row->getId()] = $row->getPrivilege();
         }
     }
     $this->addElement('select', 'privilege_id', array('label' => 'Privilege:', 'MultiOptions' => $multi_options));
     $this->addElement('submit', 'submit', array('ignore' => true, 'label' => 'Add Role-Resource-Privilege'));
 }