在codeigniter的Helper类中动态填充下拉列表 - Filling dropdown dynamicly in Helper class in codeigniter

Filling dropdown dynamicly in Helper class in codeigniter

我正在使用codeigniter，并试图编写一个Helper类，用于根据模型名称和作为视图列名的属性动态加载下拉列表。

function dropdown($Class,$Attribute)
{
$Output=NULL;
define("CLASSNAME", $Class."_model");
define("ATTRIBUTE", $Attribute);
$CI = get_Instance();
$CI->load->model(CLASSNAME);
$FullData=$CI->CLASSNAME->get();
foreach ($FullData as $Data) 
{
    $Output.='<option value="'.$Data->Id.'">'.$Data->ATTRIBUTE.'</option>';
}
return $Output;
}

但当我打电话时，意味着我收到了这个错误：

A PHP Error was encountered
Severity: Notice
Message: Undefined property: News::$CLASSNAME
Filename: helpers/component_helper.php
Line Number: 11
Fatal error: Call to a member function get() on a non-object in C:'xampp'test'application'helpers'component_helper.php on line 11

您似乎错过了语法

$CI = get_Instance();

请改用$CI =& get_Instance();，然后再次检查问题是否已解决。