/**
* Renders a radio button.
* This method will generate the "checked" tag attribute according to the model attribute value.
* @param array $options the tag options in terms of name-value pairs. The following options are specially handled:
*
* - uncheck: string, the value associated with the uncheck state of the radio button. If not set,
* it will take the default value '0'. This method will render a hidden input so that if the radio button
* is not checked and is submitted, the value of this attribute will still be submitted to the server
* via the hidden input. If you do not want any hidden input, you should explicitly set this option as null.
* - label: string, a label displayed next to the radio button. It will NOT be HTML-encoded. Therefore you can pass
* in HTML code such as an image tag. If this is coming from end users, you should [[Html::encode()|encode]] it to prevent XSS attacks.
* When this option is specified, the radio button will be enclosed by a label tag. If you do not want any label, you should
* explicitly set this option as null.
* - labelOptions: array, the HTML attributes for the label tag. This is only used when the "label" option is specified.
*
* The rest of the options will be rendered as the attributes of the resulting tag. The values will
* be HTML-encoded using [[Html::encode()]]. If a value is null, the corresponding attribute will not be rendered.
*
* If you set a custom `id` for the input element, you may need to adjust the [[$selectors]] accordingly.
*
* @param boolean $enclosedByLabel whether to enclose the radio within the label.
* If true, the method will still use [[template]] to layout the checkbox and the error message
* except that the radio is enclosed by the label tag.
* @return $this the field object itself
*/
public function radio($options = [], $enclosedByLabel = true)
{
if ($enclosedByLabel) {
$this->parts['{input}'] = Html::activeRadio($this->model, $this->attribute, $options);
$this->parts['{label}'] = '';
} else {
if (isset($options['label']) && !isset($this->parts['{label}'])) {
$this->parts['{label}'] = $options['label'];
if (!empty($options['labelOptions'])) {
$this->labelOptions = $options['labelOptions'];
}
}
unset($options['labelOptions']);
$options['label'] = null;
$this->parts['{input}'] = Html::activeRadio($this->model, $this->attribute, $options);
}
$this->adjustLabelFor($options);
return $this;
}