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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\PageCache\Model\System\Config\Backend;
/**
* Backend model for processing Varnish settings
*
* Class Varnish
*/
class Varnish extends \Magento\Framework\App\Config\Value
{
/**
* @var array
*/
protected $defaultValues;
/**
* Set default data if empty fields have been left
*
* @return $this|\Magento\Framework\Model\AbstractModel
* @throws \Magento\Framework\Exception\LocalizedException
*/
public function beforeSave()
{
$data = $this->_getDefaultValues();
$currentValue = $this->getValue();
if (!$currentValue) {
$replaceValue = isset($data[$this->getField()]) ? $data[$this->getField()] : false;
$this->setValue($replaceValue);
}
return $this;
}
/**
* Get Default Config Values
*
* @return array
*/
protected function _getDefaultValues()
{
if (!$this->defaultValues) {
$this->defaultValues = $this->_config->getValue('system/full_page_cache/default');
}
return $this->defaultValues;
}
/**
* If fields are empty fill them with default data
*
* @return $this|\Magento\Framework\Model\AbstractModel
*/
protected function _afterLoad()
{
$data = $this->_getDefaultValues();
$currentValue = $this->getValue();
if (!$currentValue) {
foreach ($data as $field => $value) {
if (strstr($this->getPath(), $field)) {
$this->setValue($value);
$this->save();
break;
}
}
}
return $this;
}
}