Joomla 3.2分组列表自定义字段列表没有SELECTED值 [英] Joomla 3.2 Grouped List Custom Field List doesn't have SELECTED value

问题描述

我正在尝试按照此页面上的说明为Joomla 3的模板参数创建自定义字段表单 创建自定义表单字段类型

I am trying to create a custom field form for template parameter for Joomla 3, by following instruction from this page Creating a custom form field type

这是我的代码:

class JFormFieldMy extends JFormField {
protected $type = 'my';
public function getInput() {
                return '<select id="'.$this->id.'" name="'.$this->name.'">'.
                        '<optgroup label="First">'.
                            '<option value="1">One</option>'.
                            '<option value="2">Two</option>'.
                            '<option value="3">Three</option>'.
                        '</optgroup>'.
                        '<optgroup label="Second">'.
                            '<option value="4">Four</option>'.
                            '<option value="5">Five</option>'.
                            '<option value="6">Six</option>'.
                        '</optgroup>'.
                       '</select>';
        }
} 

效果很好，可以保存该值，但是所选值不具有selected ="selected"状态，因此当我选择/实际值为"Two"时，下拉列表将始终显示选项'One'

It works good, the value is saved, but the selected value doesn't have the selected="selected" state so the dropdown list will always show the option 'One' when I choose / the actual value is 'Two'

我已阅读此解决方案: Joomla 2.5 Custom在显示中未选择字段列表" ，但这是针对通用列表类型的，不适用于我想要的分组列表.

I have read this solution : Joomla 2.5 Custom Field List not SELECTED in display but that's for generic list type not for grouped list I wanted.

任何人都可以帮助我吗? 谢谢

Anyone can help me? Thanks

推荐答案

您未设置列表中的选定元素:

You are not setting the selected element of the list:

<option value="the_value" selected>....</option>

另一种方法:您应该从抽象类JHtmlList派生它，而不是从JFormField派生您的类(您可以在libraries/cms/html/list.php上找到它) 您可以开始以libraries/cms/form/field/limitbox.php为例.

Another approach: instead of deriving your class from JFormField you should derive it from the abstract class JHtmlList (you will find it on libraries/cms/html/list.php) You may start taking libraries/cms/form/field/limitbox.php as an example.

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