dataloader.php

См. документацию.

<?php
namespace Bitrix\Landing\Source;
 
use Bitrix\Main;
 
abstract class DataLoader
{
    protected $config = [
        'select' => [],
        'filter' => [],
        'order' => [],
        'limit' => 0,
        'internal_filter' => []
    ];
 
    protected $options = [];

    protected $seo = null;
 
    public function __construct()
    {
        $this->seo = new Seo();
    }

    public function setConfig(array $config)
    {
        if (empty($config))
        {
            return;
        }
        $this->config = array_merge($this->config, $config);
    }

    public function setOptions(array $options)
    {
        if (empty($options))
        {
            return;
        }
        $this->options = array_merge($this->options, $options);
    }

    abstract public function getElementListData();

    abstract public function getElementData($element);

    public function normalizeFilter($filter)
    {
        if (!is_array($filter))
        {
            return [];
        }
        if (empty($filter))
        {
            return $filter;
        }
 
        $result = [];
        foreach ($filter as $row)
        {
            if (empty($row) || !is_array($row))
            {
                continue;
            }
            if (empty($row['key']) || empty($row['value']) || !is_array($row['value']))
            {
                continue;
            }
            $result[] = $row;
        }
        unset($row);
 
        if (!empty($result))
        {
            Main\Type\Collection::sortByColumn($result, ['key' => SORT_ASC]);
        }
        return $result;
    }

    public function calculateFilterHash($filter)
    {
        if (!is_array($filter))
        {
            $filter = [];
        }
        return md5(serialize($filter));
    }

    public function getFilterHash($filter)
    {
        return $this->calculateFilterHash($this->normalizeFilter($filter));
    }

    protected function getSelectFields()
    {
        return $this->getSettingsValue('select');
    }

    protected function getPreparedSelectFields()
    {
        $result = [];
        $fields = $this->getSelectFields();
        if (!empty($fields) && is_array($fields))
        {
            foreach ($fields as $row)
            {
                if (empty($row) || !is_array($row) || empty($row['id']))
                {
                    continue;
                }
                $result[] = $row['id'];
            }
            unset($row);
        }
        return $result;
    }

    protected function getFilter()
    {
        return $this->getSettingsValue('filter');
    }

    protected function getPreparedFilter(array $fields)
    {
        $result = [];
        $filter = $this->getFilter();
        if (!empty($filter) && is_array($filter))
        {
            $dataFilter = new DataFilter();
            $dataFilter->setFields($fields);
            $result = $dataFilter->create($filter);
            unset($dataFilter);
        }
        return $result;
    }

    protected function getOrder()
    {
        return $this->getSettingsValue('order');
    }

    protected function getLimit()
    {
        return (int)$this->getSettingsValue('limit');
    }

    protected function getInternalFilter()
    {
        return $this->getSettingsValue('internal_filter');
    }

    protected function getSettingsValue($index)
    {
        $index = trim((string)$index);
        if ($index === '')
        {
            return null;
        }
        if (!empty($this->config[$index]))
        {
            return $this->config[$index];
        }
        return null;
    }

    protected function getOptionsValue($index)
    {
        $index = trim((string)$index);
        if ($index === '')
        {
            return null;
        }
        if (!empty($this->options[$index]))
        {
            return $this->options[$index];
        }
        return null;
    }

    public function getSeo()
    {
        return $this->seo;
    }

    public function getSeoProperty($name)
    {
        return $this->seo->getProperty($name);
    }

    public function getSeoTitle()
    {
        return $this->getSeoProperty(Seo::TITLE);
    }
}