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Current File : /var/www/html/app/code/FlipsDigital/TextbookList/Controller/Adminhtml/TextbookList/MassDelete.php

<?php
/**
 * MassDelete.php
 *
 * @copyright Copyright © 2021 FlipsDigital. All rights reserved.
 * @author    calvin.so@flipsdigital.com
 */
namespace FlipsDigital\TextbookList\Controller\Adminhtml\TextbookList;

use Magento\Backend\App\Action;
use Magento\Backend\App\Action\Context;
use Magento\Ui\Component\MassAction\Filter;
use Magento\Framework\Controller\ResultFactory;
use FlipsDigital\TextbookList\Model\ResourceModel\TextbookList\Collection;

/**
 * Class MassDelete
 */
class MassDelete extends Action
{
    /**
     * @var Filter
     */
    protected $filter;

    /** @var Collection $objectCollection */
    protected $objectCollection;

    /**
     * @param Context $context
     * @param Filter $filter
     * @param Collection $objectCollection
     */
    public function __construct(Context $context, Filter $filter, Collection $objectCollection)
    {
        $this->filter = $filter;
        $this->objectCollection = $objectCollection;
        parent::__construct($context);
    }

    /**
     * Execute action
     *
     * @return \Magento\Backend\Model\View\Result\Redirect
     * @throws \Magento\Framework\Exception\LocalizedException|\Exception
     */
    public function execute()
    {
        $collection = $this->filter->getCollection($this->objectCollection);
        $collectionSize = $collection->getSize();
        $collection->walk('delete');

        $this->messageManager->addSuccessMessage(__('A total of %1 record(s) have been deleted.', $collectionSize));

        /** @var \Magento\Backend\Model\View\Result\Redirect $resultRedirect */
        $resultRedirect = $this->resultFactory->create(ResultFactory::TYPE_REDIRECT);
        return $resultRedirect->setPath('*/*/');
    }
}