Yii2 在 select > 中添加额外的属性选项列表 [英] Yii2 add extra attribute in select > options list

问题描述

如何在选项列表中为所有人添加如下面的截图 state_id=1 中的额外属性.

How I can add an extra attribute like in below screenshot state_id=1 in options list for all.

<?= $form->field($model, 'district_id')->dropDownList(ArrayHelper::map($Districts, 'id', 'name')) ?>

推荐答案

您需要遍历 $Districts 数组，并将所有要添加的属性关联到 ; 的下拉菜单，我假设你的 $Districts 数组有类似下面的内容

You need to iterate through the $Districts array and associate all the attributes you want to add to the <option> of the dropdown, i assume that your $Districts array has something like below

$Districts=[
    1=>"North Andaman",
    2=>"South Andaman"
    3=>"Nicobar"
];

现在您需要迭代该数组并将属性与每个选项相关联

Now you need to iterate that array and associate the attributes with every option

foreach ($Districts as $id => $name) {
    $optionAttributes[$id] = ['my-attr' => 'value'];
}

上面会告诉你类似的东西

The above will show you something like

Array
(
    [1] => Array
        (
            [my-attr] => value
        )

    [2] => Array
        (
            [my-attr] => value
        )

    [3] => Array
        (
            [my-attr] => value
        )

)

现在在创建下拉列表时，您应该将此数组传递给 dropdownList() 的 options 选项，见下文

Now when creating your dropdown you should pass this array to the options option of the dropdownList() see below

echo $form->field($model, 'district_id')->dropDownList(
    $Districts,
    ['options' => $optionAttributes]
);

现在，如果您看到页面的源代码，它将显示如下下拉列表

Now if you see the source of the page it will show you the dropdown like below

<select id="contacts-district_id" name="Contacts[district_id]" class="form-control">
    <option value="1" my-attr="value">North Andaman</option>
    <option value="2" my-attr="value">South Andaman</option>
    <option value="3" my-attr="value">Nicobar</option>
</select>

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