search.php

См. документацию.

<?php
namespace Bitrix\Landing\Subtype;
 
use \Bitrix\Landing\Landing;
use \Bitrix\Landing\Block;
 
class Search
{
    public static function getSearchResultPage($siteId, $tplCode)
    {
        $siteId = (int) $siteId;
        $tplCode = (string) $tplCode;
 
        $res = Landing::getList([
            'select' => [
                'ID'
            ],
            'filter' => [
                'SITE_ID' => $siteId,
                '=TPL_CODE' => $tplCode
            ]
        ]);
        if ($row = $res->fetch())
        {
            $landingId = $row['ID'];
        }
        else
        {
            $res = \Bitrix\Landing\PublicAction\Landing::addByTemplate(
                $siteId,
                $tplCode
            );
            $landingId = $res->getResult();
        }
 
        return $landingId;
    }

    protected static function prepareForm(array $manifest, array $params = [])
    {
        if (\Bitrix\Landing\Transfer\AppConfiguration::inProcess())
        {
            return $manifest;
        }
 
        // necessary params
        if (!isset($params['resultPage']))
        {
            return $manifest;
        }
 
        // force set action attribute for form after block add
        $manifest['callbacks'] = array(
            'afterAdd' => function (Block &$block) use($params)
            {
                $manifest = $block->getManifest();
                $landingId = Search::getSearchResultPage(
                    $block->getSiteId(),
                    $params['resultPage']
                );
 
                if (!$landingId)
                {
                    return;
                }
 
                // try to find url attrs and set default value
                $attributeSelector = '';
                foreach ($manifest['attrs'] as $selector => $item)
                {
                    if (
                        $item['type'] == 'url' &&
                        $item['attribute'] == 'action'
                    )
                    {
                        $attributeSelector = $selector;
                        break;
                    }
                }
 
                $block->setAttributes([
                    $attributeSelector => [
                        'action' => '#landing' . $landingId
                    ]
                ]);
                $block->save();
            },
        );
 
        return $manifest;
    }

    public static function prepareManifest(array $manifest, Block $block = null, array $params = [])
    {
        if (!isset($params['type']))
        {
            return $manifest;
        }
 
        if ($params['type'] == 'form')
        {
            return self::prepareForm($manifest, $params);
        }
 
        return $manifest;
    }
}