how to disable one item in yii2 ActiveFrom dropDownList?

问题

Yii2 active form

<?= $form->field($model, 'pid')->dropDownList([1=>1,2=>2])->hint('上级分类') ?>

I want to disable the option item 2=>2.

Is there a way to do it?

回答1:

You can add attributes for all items in the dropdownlist with the 'options' key. Let's say you want to disable the second item.

<?= $form->field($model, 'pid')->dropDownList([1 => 1, 2 => 2], ['options' => [2 => ['disabled' => true]]])->hint('上级分类') ?>

In the docs: http://www.yiiframework.com/doc-2.0/yii-helpers-basehtml.html#activeDropDownList()-detail

回答2:

This would work definitely:

<?= $form->field($model, 'pid')->dropDownList([1=>1,2=>2], ['options'=>['2'=>['disabled'=>true]]]) ?>

回答3:

ActiveField dropDownlist() explicitly calls BaseHtml activeDropDownList():

From the docs to ActiveField dropDownList():

The tag options in terms of name-value pairs.

For the list of available options please refer to the $options parameter of yii\helpers\Html::activeDropDownList().

And from the docs to BaseHtml activeDropDownList():

options: array, the attributes for the select option tags. The array keys must be valid option values, and the array values are the extra attributes for the corresponding option tags. For example,

[
    'value1' => ['disabled' => true],
    'value2' => ['label' => 'value 2'],
];

So pass these options:

[
    2 => ['disabled' => true],
],

as second parameter to dropDownList().

回答4:

Try this:

$disableDataArr['1'] =  ['disabled' => true];
dropDownList( $dataArr, ['options'=> $disableDataArr ])

来源：https://stackoverflow.com/questions/31720718/how-to-disable-one-item-in-yii2-activefrom-dropdownlist