Yii2 form checkbox template - forms

Question

I set the form parameters:
<?
$form = ActiveForm::begin([
'id' => 'activeForm',
'action' => 'javascript://',
]);
$checkboxTemplate = '<div class="checkbox">{labelTitle}{beginLabel}{input}<span class="slider round"></span>{endLabel}{error}{hint}</div>';
echo $form->field($aclForm, tbl_RbacActions::IS_DEVELOPMENT)
->checkbox([
'labelOptions' => ['class' => 'switch'],
'template' => $checkboxTemplate
]);
?>
As a result, it still turns a standard form with standart classes:
<form id="Index-form" class="row col-12 no-gutters" action="javascript://" method="post">
<input type="hidden" name="_csrf-frontend" value="Lo7lVHTJ9wcN5rdfjK-b7AgW8L4OHEaqI9IsVofZPOl3yKkFBJqAQz-i-y7H3-mdMUmY-H1RcMRBhkU01-F2oA==">
<div class="form-group field-aclform-is_development required">
<input type="hidden" name="AclForm[is_development]" value="0">
<label class="switch">
<input type="checkbox" id="aclform-is_development" name="AclForm[is_development]" value="1" template="{input}{beginLabel}{labelTitle}{endLabel}{error}"> Is Development</label>
<div class="help-block"></div>
</div>
</form>
Why is it adding the template as the input attribute?

Answer 1

You haven't provided the HTML template that you are trying to follow or integrate here in the checkbox, but regarding the template being added as the attribute of the input field is quite logical as you are passing it as the option of the checkbox rather than the field option.
You need to provide the template as an array to the third parameter option of the field see below
<?php
$form = ActiveForm::begin(
[
'id' => 'activeForm',
'action' => 'javascript://'
]
);
$checkboxTemplate = '<div class="checkbox">{labelTitle}{beginLabel}{input}<span class="slider round"></span>{endLabel}{error}{hint}</div>';
echo $form->field(
$aclForm,
tbl_RbacActions::IS_DEVELOPMENT,
[
'template' => $checkboxTemplate
]
)->checkbox(
[
'labelOptions' => ['class' => 'switch']
]
);