Allow yii\boostrap\ActiveField to customize the DIV and the LABEL tag around the checkboxList's inputs

[bicf]

If inline attribute is false ( https://github.com/yiisoft/yii2/blob/master/extensions/bootstrap/ActiveField.php#97 ) there's no possibility to customize tags around input for the activeField checkboxList.
This patch allows to set the attributes even to DIV and to LABEL.

How to use

Inside itemOptions
add containerOptions to set the DIV attributes
and/or
add labelOptions to set the LABEL attributes

\yii\bootstrap\ActiveForm::checkboxList(
    $check_box_array, [
        'class' => "outside-class",
        'itemOptions' => [
            'containerOptions' => [
                'class' => "div-wrapper-class",
            ],
            'labelOptions'     => [
                'class' => 'label-wrapper-class'
            ],
            'class' => 'input-tag-class',
        ]
    ]);

The effects
From this HTML

<div id="queryform-answermultiple" class="outside-class">
    <div class="checkbox">  // <-----------------------
        <label>   // <-----------------------
            <input type="checkbox" class="input-tag-class" name="QueryForm[answerMultiple][]" value="123">
        </label>
    </div>
    <div class="checkbox">
        <label>
            <input type="checkbox" class="input-tag-class" name="QueryForm[answerMultiple][]" value="456">
        </label>
    </div>
</div>

To this HTML

<div id="queryform-answermultiple" class="outside-class">
    <div class="div-wrapper-class">   // <-----------------------
        <label class="label-wrapper-class" >   // <-----------------------
            <input type="checkbox" class="input-tag-class" name="QueryForm[answerMultiple][]" value="414">
        </label>
    </div>
    <div class="div-wrapper-class">
        <label class="label-wrapper-class">
            <input type="checkbox" class="input-tag-class" name="QueryForm[answerMultiple][]" value="415">
        </label>
    </div>
</div>

[bicf]

@samdark,
I apologize, my fault, drop the commit on composer.json

TIA
Ivan

[klimov-paul]

You can use ActiveField::checkboxTemplate for this use case.