select.php

См. документацию.

<?php
namespace Bitrix\Landing\Field;
 
use \Bitrix\Main\Localization\Loc;
 
Loc::loadMessages(__FILE__);
 
class Select extends \Bitrix\Landing\Field
{
    protected $options = array();

    protected $multiple = false;

    public function __construct($code, array $params = array())
    {
        $this->code = mb_strtoupper($code);
        $this->value = null;
        $this->default = isset($params['default']) ? $params['default'] : null;
        $this->id = isset($params['id']) ? $params['id'] : '';
        $this->title = isset($params['title']) ? $params['title'] : '';
        $this->multiple = isset($params['multiple']) && $params['multiple'];
        $this->help = isset($params['help']) ? $params['help'] : '';
        $this->htmlHelp = isset($params['htmlHelp']) ? $params['htmlHelp'] : '';
        $this->options = isset($params['options']) ? (array)$params['options'] : array();
    }

    public function isEmptyValue()
    {
        return $this->value === '' ||
               $this->value === 0;
    }

    public function isMulti()
    {
        return $this->multiple;
    }

    public function viewForm(array $params = array())
    {
        ?>
        <select <?php
                ?><?= isset($params['additional']) ? $params['additional'] . ' ' : ''?><?php
                ?><?= isset($params['id']) ? 'id="' . \htmlspecialcharsbx($params['id']) . '" ' : ''?><?php
                ?><?= $this->multiple ? 'multiple="multiple" size="3" ' : ''?><?php
                ?>class="<?= isset($params['class']) ? \htmlspecialcharsbx($params['class']) : ''?>" <?php
                ?>name="<?= $this->getName($params["name_format"])?><?= $this->multiple ? '[]' : ''?>" <?php
        ?> />
        <?foreach ($this->options as $code => $val):?>
            <option value="<?= \htmlspecialcharsbx($code)?>"<?php
            echo in_array($code, (array) $this->value) ? ' selected="selected"' : '';
            if (!$this->value && $code == $this->default)
            {
                echo ' selected="selected"';
            }
            ?>>
                <?= \htmlspecialcharsbx($val)?>
            </option>
        <?php endforeach;?>
        </select>
        <?php
    }

    public function getName($nameFormat)
    {
        return  \htmlspecialcharsbx(isset($nameFormat)
            ? str_replace('#field_code#', $this->code, $nameFormat)
            : $this->code);
    }

    public function getOptions()
    {
        return $this->options;
    }
}