public function init()
 {
     //Generate Products(items) Combo
     $item_pack_sizes = new Model_ItemPackSizes();
     $result2 = $item_pack_sizes->getAllPurposeItems();
     $this->_list["product"][''] = "Select";
     foreach ($result2 as $item) {
         $this->_list["product"][$item['pk_id']] = $item['item_name'];
     }
     $this->_list["batch"][''] = "Select";
     foreach ($this->_fields as $col => $name) {
         if (in_array($col, array_keys($this->_list))) {
             $this->addElement("select", $col, array("attribs" => array("class" => "form-control"), "filters" => array("StringTrim", "StripTags"), "allowEmpty" => true, "required" => false, "registerInArrayValidator" => false, "multiOptions" => $this->_list[$col], "validators" => array()));
             $this->getElement($col)->removeDecorator("Label")->removeDecorator("HtmlTag");
         }
     }
 }