administrcms/form

<?php

namespace Administr\Form\Field;

class Radio extends Field
{
    public function render(array $attributes = [], array $viewData = [])
    {
        $this->options = array_merge($this->getOptions(), $attributes);

        $value = request($this->getEscapedName(), $this->getOption('value'));
        $value = old($this->getEscapedName(), $value);

        if ($this->isChecked($value)) {
            $this->options['checked'] = 'checked';
        }

        return parent::render($attributes, $viewData);
    }
}